emdb Schema

• Primary Key: emdb_id
• Tables: 79

brief_summary

Column	Type	Description
emdb_id	text
docid	bigint
deposition_date	date
header_release_date	date
map_release_date	date
modification_date	date
update_date	timestamp without time zone
content	jsonb
keywords	text[]

audit_conform

Column	Type	Description
emdb_id	text
dict_location	text	A file name or uniform resource locator (URL) for the dictionary to which the current data block conforms.
dict_name	text	The string identifying the highest-level dictionary defining data names used in this file.
dict_version	text	The version number of the dictionary to which the current data block conforms.

chem_comp

Column	Type	Description
emdb_id	text
formula	text	The formula for the chemical component. Formulae are written according to the following rules: (1) Only recognized element symbols may be used. (2) Each element symbol is followed by a 'count' number. A count of '1' may be omitted. (3) A space or parenthesis must separate each cluster of (element symbol + count), but in general parentheses are not used. (4) The order of elements depends on whether carbon is present or not. If carbon is present, the order should be: C, then H, then the other elements in alphabetical order of their symbol. If carbon is not present, the elements are listed purely in alphabetic order of their symbol. This is the 'Hill' system used by Chemical Abstracts.
formula_weight	double precision	Formula mass in daltons of the chemical component.
id	text	The value of _chem_comp.id must uniquely identify each item in the CHEM_COMP list. For protein polymer entities, this is the three-letter code for the amino acid. For nucleic acid polymer entities, this is the one-letter code for the base.
mon_nstd_flag	text	'yes' indicates that this is a 'standard' monomer, 'no' indicates that it is 'nonstandard'. Nonstandard monomers should be described in more detail using the _chem_comp.mon_nstd_parent, _chem_comp.mon_nstd_class and _chem_comp.mon_nstd_details data items.
name	text	The full name of the component.
type	text	For standard polymer components, the type of the monomer. Note that monomers that will form polymers are of three types: linking monomers, monomers with some type of N-terminal (or 5') cap and monomers with some type of C-terminal (or 3') cap.
pdbx_synonyms	text	Synonym list for the component.

citation

Column	Type	Description
emdb_id	text
country	text	The country/region of publication; relevant for books and book chapters.
id	text	The value of _citation.id must uniquely identify a record in the CITATION list. The _citation.id 'primary' should be used to indicate the citation that the author(s) consider to be the most pertinent to the contents of the data block. Note that this item need not be a number; it can be any unique identifier.
journal_abbrev	text	Abbreviated name of the cited journal as given in the Chemical Abstracts Service Source Index.
journal_id_ASTM	text	The American Society for Testing and Materials (ASTM) code assigned to the journal cited (also referred to as the CODEN designator of the Chemical Abstracts Service); relevant for journal articles.
journal_id_CSD	text	The Cambridge Structural Database (CSD) code assigned to the journal cited; relevant for journal articles. This is also the system used at the Protein Data Bank (PDB).
journal_id_ISSN	text	The International Standard Serial Number (ISSN) code assigned to the journal cited; relevant for journal articles.
journal_volume	text	Volume number of the journal cited; relevant for journal articles.
page_first	text	The first page of the citation; relevant for journal articles, books and book chapters.
page_last	text	The last page of the citation; relevant for journal articles, books and book chapters.
title	text	The title of the citation; relevant for journal articles, books and book chapters.
year	integer	The year of the citation; relevant for journal articles, books and book chapters.
database_id_CSD	text	Identifier ('refcode') of the database record in the Cambridge Structural Database that contains details of the cited structure.
pdbx_database_id_DOI	text	Document Object Identifier used by doi.org to uniquely specify bibliographic entry.
pdbx_database_id_PubMed	integer	Ascession number used by PubMed to categorize a specific bibliographic entry.
unpublished_flag	text	Flag to indicate that this citation will not be published.

citation_author

Column	Type	Description
emdb_id	text
citation_id	text	This data item is a pointer to _citation.id in the CITATION category.
name	text	Name of an author of the citation; relevant for journal articles, books and book chapters. The family name(s), followed by a comma and including any dynastic components, precedes the first name(s) or initial(s).
ordinal	integer	This data item defines the order of the author's name in the list of authors of a citation.
identifier_ORCID	text	The Open Researcher and Contributor ID (ORCID).

database_2

Column	Type	Description
emdb_id	text
database_id	text	An abbreviation that identifies the database.
database_code	text	The code assigned by the database identified in _database_2.database_id.
pdbx_database_accession	text	Extended accession code issued for for _database_2.database_code assigned by the database identified in _database_2.database_id.
pdbx_DOI	text	Document Object Identifier (DOI) for this entry registered with http://crossref.org.

em_2d_crystal_entity

Column	Type	Description
emdb_id	text
angle_gamma	double precision	Unit-cell angle gamma in degrees.
c_sampling_length	double precision	Length used to sample the reciprocal lattice lines in the c-direction.
image_processing_id	text	pointer to _em_image_processing.id in the EM_IMAGE_PROCESSING category.
id	text	PRIMARY KEY
entity_assembly_id	text	Corresponding key in _em_entity_assembly category.
length_a	double precision	Unit-cell length a in angstroms.
length_b	double precision	Unit-cell length b in angstroms.
length_c	double precision	Thickness of 2D crystal
space_group_name_H-M	text	There are 17 plane groups classified as oblique, rectangular, square, and hexagonal. To describe the symmetry of 2D crystals of biological molecules, plane groups are expanded to equivalent noncentrosymmetric space groups. The 2D crystal plane corresponds to the 'ab' plane of the space group. Enumerated space group descriptions include the plane group number in parentheses, the H-M plane group symbol, and the plane group class.

em_3d_crystal_entity

Column	Type	Description
emdb_id	text
angle_alpha	double precision	Unit-cell angle alpha in degrees.
angle_beta	double precision	Unit-cell angle beta in degrees.
angle_gamma	double precision	Unit-cell angle gamma in degrees.
image_processing_id	text	pointer to _em_image_processing.id in the EM_IMAGE_PROCESSING category.
id	text	PRIMARY KEY
length_a	double precision	Unit-cell length a in angstroms.
length_b	double precision	Unit-cell length b in angstroms.
length_c	double precision	Unit-cell length c in angstroms.
space_group_name	text	Space group name.
space_group_num	integer	Space group number.

em_3d_fitting

Column	Type	Description
emdb_id	text
id	text	The value of _em_3d_fitting.id must uniquely identify a fitting procedure of atomic coordinates into 3dem reconstructed map volume.
entry_id	text	This data item is a pointer to _entry_id in the ENTRY category.
method	text	The method used to fit atomic coordinates into the 3dem reconstructed map.
target_criteria	text	The measure used to assess quality of fit of the atomic coordinates in the 3DEM map volume.
details	text	Any additional details regarding fitting of atomic coordinates into the 3DEM volume, including data and considerations from other methods used in computation of the model.
overall_b_value	double precision	The overall B (temperature factor) value for the 3d-em volume.
ref_space	text	A flag to indicate whether fitting was carried out in real or reciprocal refinement space.
ref_protocol	text	The refinement protocol used.

em_3d_fitting_list

Column	Type	Description
emdb_id	text
id	text	PRIMARY KEY
3d_fitting_id	text	The value of _em_3d_fitting_list.3d_fitting_id is a pointer to _em_3d_fitting.id in the 3d_fitting category
pdb_entry_id	text	The PDB code for the entry used in fitting.
pdb_chain_id	text	The ID of the biopolymer chain used for fitting, e.g., A. Please note that only one chain can be specified per instance. If all chains of a particular structure have been used for fitting, this field can be left blank.
pdb_chain_residue_range	text	Residue range for the identified chain.
details	text	Details about the model used in fitting.
chain_id	text	The ID of the biopolymer chain used for fitting, e.g., A. Please note that only one chain can be specified per instance. If all chains of a particular structure have been used for fitting, this field can be left blank.
chain_residue_range	text	The residue ranges of the initial model used in this fitting.
source_name	text	This item identifies the resource of initial model used for refinement
type	text	This item describes the type of the initial model was generated
accession_code	text	This item identifies an accession code of the resource where the initial model is used
initial_refinement_model_id	integer	The value of _em_3d_fitting.initial_refinement_model_id itentifies the id in the _pdbx_initial_refinement_model

em_3d_reconstruction

Column	Type	Description
emdb_id	text
entry_id	text	This data item is a pointer to _entry.id in the ENTRY category.
id	text	PRIMARY KEY
method	text	The algorithm method used for the 3d-reconstruction.
algorithm	text	The reconstruction algorithm/technique used to generate the map.
details	text	Any additional details used in the 3d reconstruction.
resolution	double precision	The final resolution (in angstroms) of the 3D reconstruction.
resolution_method	text	The method used to determine the final resolution of the 3d reconstruction. The Fourier Shell Correlation criterion as a measure of resolution is based on the concept of splitting the (2D) data set into two halves; averaging each and comparing them using the Fourier Ring Correlation (FRC) technique.
nominal_pixel_size	double precision	The nominal pixel size of the projection set of images in Angstroms.
actual_pixel_size	double precision	The actual pixel size of the projection set of images in Angstroms.
num_particles	integer	The number of 2D projections or 3D subtomograms used in the 3d reconstruction
num_class_averages	integer	The number of classes used in the final 3d reconstruction
fsc_type	text	Half-set refinement protocol (semi-independent or gold standard)
refinement_type	text	Indicates details on how the half-map used for resolution determination (usually by FSC) have been generated.
image_processing_id	text	Foreign key to the EM_IMAGE_PROCESSING category
symmetry_type	text	The type of symmetry applied to the reconstruction

em_admin

Column	Type	Description
emdb_id	text
current_status	text	This data item indicates the current status of the EMDB entry.
deposition_date	date	date of the entry deposition
deposition_site	text	entry deposition site
details	text	EMDB administration details
entry_id	text	This data item is a pointer to _entry.id.
last_update	date	date of last update to the file
map_release_date	date	date of map release for this entry
header_release_date	date	date of header information release for this entry
title	text	Title for the EMDB entry.
process_site	text	The site where the file was deposited.
composite_map	text	Indicates whether the authors have declared that this is a composite map deposition

em_author_list

Column	Type	Description
emdb_id	text
author	text	Author of the EMDB entry in PDB format: Taylor, T.J.
identifier_ORCID	text	The Open Researcher and Contributor ID (ORCID).
ordinal	integer	ID 1 corresponds to the main author of the entry

em_buffer

Column	Type	Description
emdb_id	text
id	text	PRIMARY KEY
specimen_id	text	pointer to _em_specimen.id
name	text	The name of the buffer.
details	text	Additional details about the buffer.
pH	double precision	The pH of the sample buffer.

em_buffer_component

Column	Type	Description
emdb_id	text
buffer_id	text	Foreign key to the entry category.
concentration	double precision	The concentration of the sample (arbitrary units).
concentration_units	text	Units for the sample concentration value.
formula	text	formula for buffer component
id	text	PRIMARY KEY
name	text	name of the buffer component

em_crystal_formation

Column	Type	Description
emdb_id	text
atmosphere	text	The type of atmosphere in which crystals were grown
details	text	Description of growth of a 2D, 3D, or helical crystal array.
id	text	PRIMARY KEY
instrument	text	Instrument used to prepare the crystalline array
lipid_mixture	text	Description of the lipid mixture used for crystallization
lipid_protein_ratio	double precision	The molar ratio of lipid to protein in the crystallized sample
specimen_id	text	Foreign key relationship to the em_specimen category
temperature	integer	The value of the temperature in kelvin used for growing the crystals.
time	integer	Time period for array crystallization, in time unit indicated (min, hr, day, month, year)
time_unit	text	Time unit for array crystallization

em_ctf_correction

Column	Type	Description
emdb_id	text
details	text	Any additional details about CTF correction
em_image_processing_id	text	Foreign key to the EM_IMAGE_PROCESSING category
id	text	PRIMARY KEY
type	text	Type of CTF correction applied

em_db_reference

Column	Type	Description
emdb_id	text
access_code	text	Unique identifier for a provided link.
db_name	text	The name of the database containing the related entry.
details	text	A description of the related entry.
id	text	PRIMARY KEY
relationship	text	Indicates relationship of this entry with other entries in PDB and EMDB.

em_db_reference_auxiliary

Column	Type	Description
emdb_id	text
id	text	PRIMARY KEY
link_type	text	Type of auxiliary data stored at the indicated link.

em_diffraction

Column	Type	Description
emdb_id	text
camera_length	double precision	The camera length (in millimeters). The camera length is the product of the objective focal length and the combined magnification of the intermediate and projector lenses when the microscope is operated in the diffraction mode.
id	text	PRIMARY KEY
imaging_id	text	Foreign key to the EM_IMAGING category
tilt_angle_list	text	Comma-separated list of tilt angles (in degrees) used in the electron diffraction experiment.

em_diffraction_shell

Column	Type	Description
emdb_id	text
em_diffraction_stats_id	text	Pointer to EM CRYSTALLOGRAPHY STATS
fourier_space_coverage	double precision	Completeness of the structure factor data within this resolution shell, in percent
high_resolution	double precision	High resolution limit for this shell (angstroms)
id	text	PRIMARY KEY
low_resolution	double precision	Low resolution limit for this shell (angstroms)
multiplicity	double precision	Multiplicity (average number of measurements) for the structure factors in this resolution shell
num_structure_factors	integer	Number of measured structure factors in this resolution shell
phase_residual	double precision	Phase residual for this resolution shell, in degrees

em_diffraction_stats

Column	Type	Description
emdb_id	text
details	text	Any addition details about the structure factor measurements
fourier_space_coverage	double precision	Completeness of the structure factor data within the defined space group at the reported resolution (percent).
high_resolution	double precision	High resolution limit of the structure factor data, in angstroms
id	text	PRIMARY KEY
image_processing_id	text	Pointer to _em_image_processing.id
num_intensities_measured	integer	Total number of diffraction intensities measured (before averaging)
num_structure_factors	integer	Number of structure factors obtained (merged amplitudes + phases)
overall_phase_error	double precision	Overall phase error in degrees
overall_phase_residual	double precision	Overall phase residual in degrees
phase_error_rejection_criteria	text	Criteria used to reject phases
r_merge	double precision	Rmerge value (percent)
r_sym	double precision	Rsym value (percent)

em_embedding

Column	Type	Description
emdb_id	text
details	text	Staining procedure used in the specimen preparation.
id	text	PRIMARY KEY
material	text	The embedding material.
specimen_id	text	Foreign key relationship to the EM SPECIMEN category

em_entity_assembly

Column	Type	Description
emdb_id	text
id	text	PRIMARY KEY
parent_id	integer	The parent of this assembly. This data item is an internal category pointer to _em_entity_assembly.id. By convention, the full assembly (top of hierarchy) is assigned parent id 0 (zero).
source	text	The type of source (e.g., natural source) for the component (sample or sample subcomponent)
type	text	The general type of the sample or sample subcomponent.
name	text	The name of the sample or sample subcomponent.
details	text	Additional details about the sample or sample subcomponent.
synonym	text	Alternative name of the component.
entity_id_list	text	macromolecules associated with this component, if defined as comma separated list of entity ids (integers).
chimera	text	An indication if an assembly is contains a chimeric polymer

em_entity_assembly_molwt

Column	Type	Description
emdb_id	text
entity_assembly_id	text	A reference to em_entity_assembly.id which uniquely identifies one sample or sample subcomponent of the imaged specimen.
experimental_flag	text	Identifies whether the given molecular weight was derived experimentally.
id	text	PRIMARY KEY
units	text	Molecular weight units.
value	double precision	The molecular weight of the sample or sample subcomponent

em_entity_assembly_naturalsource

Column	Type	Description
emdb_id	text
cell	text	The cell type from which the component was obtained.
cellular_location	text	The cellular location of the component.
entity_assembly_id	text	Pointer to the assembly component defined in the EM ENTITY ASSEMBLY category.
id	text	PRIMARY KEY
ncbi_tax_id	integer	The NCBI taxonomy id for the natural organism source of the component.
organism	text	The scientific name of the source organism for the component
organelle	text	The organelle from which the component was obtained.
organ	text	The organ of the organism from which the component was obtained.
strain	text	The strain of the natural organism from which the component was obtained, if relevant.
tissue	text	The tissue of the natural organism from which the component was obtained.
details	text	Additional details describing this natural source.

em_entity_assembly_recombinant

Column	Type	Description
emdb_id	text
cell	text	The cell of the host organism from which the expressed component was obtained, if relevant.
entity_assembly_id	text	Pointer to the expressed component described in the EM ENTITY ASSEMBLY category.
id	text	PRIMARY KEY
ncbi_tax_id	integer	The NCBI taxonomy id of the expression host used to produce the component.
organism	text	Expression system host organism used to produce the component.
plasmid	text	The plasmid used to produce the component in the expression system.
strain	text	The strain of the host organism from which the expresed component was obtained, if relevant.

em_euler_angle_assignment

Column	Type	Description
emdb_id	text
details	text	Any additional details about euler angle assignment
id	text	PRIMARY KEY
image_processing_id	text	Foreign key to the EM_IMAGE_PROCESSING category
order	text	Stage of the reconstruction in which the angle assignments were made.
proj_matching_angular_sampling	double precision	Angular sampling of projection matching
proj_matching_merit_function	text	Overall figure of merit for projection matching
proj_matching_num_projections	integer	Number of reference projections used for euler angle assignment
type	text	The procedure used to assigned euler angles.

em_experiment

Column	Type	Description
emdb_id	text
entry_id	text	This data item is a pointer to _entry.id in the ENTRY category.
id	text	PRIMARY KEY
reconstruction_method	text	The reconstruction method used in the EM experiment.
aggregation_state	text	The aggregation/assembly state of the imaged specimen.
entity_assembly_id	text	Foreign key to the EM_ENTITY_ASSEMBLY category

em_fiducial_markers

Column	Type	Description
emdb_id	text
diameter	double precision	Diameter of the fiducial markers
em_tomography_specimen_id	text	Foreign key relationship to the EM TOMOGRAPHY SPECIMEN category
id	text	PRIMARY KEY
manufacturer	text	Manufacturer source for the fiducial markers

em_final_classification

Column	Type	Description
emdb_id	text
avg_num_images_per_class	integer	The average number of images per class in the final 2D/3D classification
details	text	Additional details about the final 2D/3D classification
id	text	PRIMARY KEY
image_processing_id	text	Foreign key to the EM_IMAGE_PROCESSING category
num_classes	integer	The number of classes used in the final 2D/3D classification
type	text	Space (2D/3D) for the classification.

em_focused_ion_beam

Column	Type	Description
emdb_id	text
current	double precision	Current of the ion beam, in nanoamperes (nA)
details	text	Additional details about FIB milling
duration	double precision	Milling time in seconds
em_tomography_specimen_id	text	Foreign key relationship to the EM TOMOGRAPHY SPECIMEN category
final_thickness	integer	Final sample thickness
id	text	PRIMARY KEY
initial_thickness	integer	Initial sample thickness
instrument	text	The instrument used for focused ion beam sectioning
ion	text	The ion source used to ablate the specimen
temperature	integer	Temperature of the sample during milling, in kelvins
voltage	integer	Voltage applied to the ion source, in kilovolts

em_grid_pretreatment

Column	Type	Description
emdb_id	text
atmosphere	text	The atmosphere used for glow discharge of the em grid.
id	text	PRIMARY KEY
pressure	double precision	Pressure of the glow discharge chamber, in pascals
sample_support_id	text	Pointer to EM SAMPLE SUPPORT
time	integer	Time period for glow discharge of the em grid, in seconds
type	text	Type of grid pretreatment

em_helical_entity

Column	Type	Description
emdb_id	text
id	text	PRIMARY KEY
entity_assembly_id	text	The value of _em_helical_entity.entity_assembly_id identifies a particular assembly component. This data item is a pointer to _em_entity_assembly.id in the EM_ENTITY_ASSEMBLY category.
image_processing_id	text	This data item is a pointer to _em_image_processing.id.
details	text	Any other details regarding the helical assembly
axial_symmetry	text	Symmetry of the helical axis, either cyclic (Cn) or dihedral (Dn), where n>=1.
angular_rotation_per_subunit	double precision	The angular rotation per helical subunit in degrees. Negative values indicate left-handed helices; positive values indicate right handed helices.
axial_rise_per_subunit	double precision	The axial rise per subunit in the helical assembly.

em_high_pressure_freezing

Column	Type	Description
emdb_id	text
details	text	Additional details about high pressure freezing.
em_tomography_specimen_id	text	Foreign key relationship to the EM TOMOGRAPHY SPECIMEN category
id	text	PRIMARY KEY
instrument	text	The instrument used for high pressure freezing.

em_image_processing

Column	Type	Description
emdb_id	text
details	text	Method details.
id	text	PRIMARY KEY
image_recording_id	text	Foreign key to the EM_IMAGE_RECORDING

em_image_recording

Column	Type	Description
emdb_id	text
average_exposure_time	double precision	The average exposure time for each image.
avg_electron_dose_per_subtomogram	double precision	The average total electron dose received by the specimen for each subtomogram (electrons per square angstrom).
avg_electron_dose_per_image	double precision	The electron dose received by the specimen per image (electrons per square angstrom).
details	text	Any additional details about image recording.
detector_mode	text	The detector mode used during image recording.
film_or_detector_model	text	The detector type used for recording images. Usually film , CCD camera or direct electron detector.
id	text	PRIMARY KEY
imaging_id	text	This data item the id of the microscopy settings used in the imaging.
num_diffraction_images	integer	The number of diffraction images collected.
num_grids_imaged	integer	Number of grids in the microscopy session
num_real_images	integer	The number of micrograph images collected.

em_image_scans

Column	Type	Description
emdb_id	text
entry_id	text	This data item is a pointer to _entry.id in the ENTRY category.
id	text	The value of _em_image_scans.id must uniquely identify the images scanned.
scanner_model	text	The scanner model.
sampling_size	double precision	The sampling step size (microns) set on the scanner.
dimension_height	integer	Height of scanned image, in pixels
dimension_width	integer	Width of scanned image, in pixels
frames_per_image	integer	Total number of time-slice (movie) frames taken per image.
image_recording_id	text	foreign key linked to _em_image_recording
used_frames_per_image	text	Range of time-slice (movie) frames used for the reconstruction.

em_imaging

Column	Type	Description
emdb_id	text
entry_id	text	This data item is a pointer to _entry.id in the ENTRY category.
id	text	PRIMARY KEY
residual_tilt	double precision	Residual tilt of the electron beam (in miliradians)
sample_support_id	text	This data item is a pointer to _em_sample_support.id in the EM_SAMPLE_SUPPORT category.
detector_id	text	The value of _em_imaging.detector_id must uniquely identify the type of detector used in the experiment.
scans_id	text	The value of _em_imaging.scans_id must uniquely identify the image_scans used in the experiment.
microscope_id	text	This data item is a pointer to _em_microscope.id in the EM_MICROSCOPE category.
microscope_model	text	The name of the model of microscope.
specimen_holder_model	text	The name of the model of specimen holder used during imaging.
details	text	Any additional imaging details.
date	date	Date (YYYY-MM-DD) of imaging experiment or the date at which a series of experiments began.
accelerating_voltage	integer	A value of accelerating voltage (in kV) used for imaging.
illumination_mode	text	The mode of illumination.
mode	text	The mode of imaging.
nominal_cs	double precision	The spherical aberration coefficient (Cs) in millimeters, of the objective lens.
nominal_defocus_min	double precision	The minimum defocus value of the objective lens (in nanometers) used to obtain the recorded images. Negative values refer to overfocus.
nominal_defocus_max	double precision	The maximum defocus value of the objective lens (in nanometers) used to obtain the recorded images. Negative values refer to overfocus.
calibrated_defocus_min	double precision	The minimum calibrated defocus value of the objective lens (in nanometers) used to obtain the recorded images. Negative values refer to overfocus.
calibrated_defocus_max	double precision	The maximum calibrated defocus value of the objective lens (in nanometers) used to obtain the recorded images. Negative values refer to overfocus.
nominal_magnification	integer	The magnification indicated by the microscope readout.
calibrated_magnification	integer	The magnification value obtained for a known standard just prior to, during or just after the imaging experiment.
electron_source	text	The source of electrons. The electron gun.
recording_temperature_minimum	double precision	The specimen temperature minimum (kelvin) for the duration of imaging.
recording_temperature_maximum	double precision	The specimen temperature maximum (kelvin) for the duration of imaging.
alignment_procedure	text	The type of procedure used to align the microscope electron beam.
c2_aperture_diameter	double precision	The open diameter of the c2 condenser lens, in microns.
specimen_id	text	Foreign key to the EM_SPECIMEN category
cryogen	text	Cryogen type used to maintain the specimen stage temperature during imaging in the microscope.

em_imaging_optics

Column	Type	Description
emdb_id	text
chr_aberration_corrector	text	Chromatic aberration corrector information
energyfilter_lower	text	The energy filter range lower value in electron volts (eV) set by spectrometer.
energyfilter_slit_width	double precision	The energy filter range slit width in electron volts (eV).
energyfilter_name	text	The type of energy filter spectrometer
energyfilter_upper	text	The energy filter range upper value in electron volts (eV) set by spectrometer.
id	text	PRIMARY KEY
imaging_id	text	Foreign key to the EM IMAGING category
phase_plate	text	Phase plate information
sph_aberration_corrector	text	Spherical aberration corrector information
details	text	Details on the use of the phase plate

em_map

Column	Type	Description
emdb_id	text
annotation_details	text	map annotation details
axis_order_fast	text	The map axis that corresponds to Columns. (CCP4 HEADER WORD 17 MAPC 1=x, 2=y, 3=z)
axis_order_medium	text	The map axis that corresponds to Rows. (CCP4 map header word 18 MAPR 1=x, 2=y, 3=z)
axis_order_slow	text	The map axis that corresponds to Sections. (CCP4 map header word 19 MAPS 1=x, 2=y, 3=z)
cell_a	double precision	Map unit cell length parameter a. (CCP4 map header word 11)
cell_b	double precision	Map unit cell length parameter b. (CCP4 map header word 12)
cell_c	double precision	Map unit cell length parameter c. (CCP4 map header word 13)
cell_alpha	double precision	Value of map unit cell angle parameter alpha in degrees. (CCP4 map header word 14)
cell_beta	double precision	Value of map unit cell angle parameter beta in degrees. (CCP4 map header word 15)
cell_gamma	double precision	Value of map unit cell angle parameter gamma in degrees. (CCP4 map header word 16)
contour_level	double precision	recommended contour level for viewing the map
contour_level_source	text	source of the recommended contour level
data_type	text	The map data_type describes the data structure of the map voxels. (CCP4 map header word 4 MODE) EMDB currently holds MODE=0,1,and 2 maps; the majority are MODE=2. MAPS with MODES other than 2 and 0 may not work in CCP4 programs. MODE = 0: 8 bits, density stored as a signed byte (-128 to 127, ISO/IEC 10967) MODE = 1: 16 bits, density stored as a signed integer (-32768 to 32767, ISO/IEC 10967) MODE = 2: 32 bits, density stored as a floating point number (IEEE 754)
dimensions_col	integer	The number of columns in the map. (CCP4 map header word 1 NC)
dimensions_row	integer	The number of rows in the map. (CCP4 map header word 2 NR)
dimensions_sec	integer	The number of sections in the map. (CCP4 map header word 3 NS)
endian_type	text	map file endian type
file	text	Map file name.
format	text	map format
id	integer	PRIMARY KEY
partition	integer	Identifies the archive file partition number of any map file
entry_id	text	This data item is a pointer to the ENTRY category.
label	text	text stored in the label field of the CCP4 map header (WORDS 57-256)
limit_col	integer	The final column position of the map relative to the Cartesian coordinate origin in voxel grid units. (derived = .origin_col + .dimensions_col -1)
limit_row	integer	The final row position of the map relative to the Cartesian coordinate origin in voxel grid units. (derived = .origin_row + .dimensions_row -1)
limit_sec	integer	The final section position of the map relative to the Cartesian coordinate origin in voxel grid units. (derived -- .origin_sec + .dimensions_sec -1)
origin_col	integer	The position of the first column of the map relative to the Cartesian coordinate origin in voxel grid units. (CCP4 map header word 5 NCSTART)
origin_row	integer	The position of the first row of the map relative to the Cartesian coordinate origin in voxel grid units. (CCP4 map header word 6 NRSTART)
origin_sec	integer	The position of the first section of the map relative to the Cartesian coordinate origin in voxel grid units. (CCP4 map header word 7 NSSTART)
pixel_spacing_x	double precision	The length in angstroms of one voxel along the X axis.
pixel_spacing_y	double precision	The length in angstroms of one voxel along the Y axis.
pixel_spacing_z	double precision	The length in angstroms of one voxel along the Z axis.
size_kb	bigint	map storage size in Kilobytes (before compression)
spacing_x	integer	The number of intervals per cell repeat in X. (CCP4 map header word 8 NX)
spacing_y	integer	The number of intervals per cell repeat in Y. (CCP4 map header word 9 NY)
spacing_z	integer	The number of intervals per cell repeat in Z. (CCP4 map header word 10 NZ)
statistics_average	double precision	Mean (average) density value of the map.
statistics_maximum	double precision	Maximum density value of the map.
statistics_minimum	double precision	Minimum density value of the map.
statistics_std	double precision	The standard deviation of the map density values.
symmetry_space_group	integer	The space group number for the map. The value is 1 unless the sample is crystalline. (CCP4 map header word 23 ISPG)
type	text	Map type

em_obsolete

Column	Type	Description
emdb_id	text
date	date	Dated when the entry made obsolete the other entry
details	text	Description of the reason(s) for entry obsoletion
entry	text	Entry made obsolete
id	text	PRIMARY KEY

em_particle_selection

Column	Type	Description
emdb_id	text
details	text	Additional detail such as description of filters used, if selection was manual or automated, and/or template details.
id	text	PRIMARY KEY
image_processing_id	text	The value of _em_particle_selection.image_processing_id points to the EM_IMAGE_PROCESSING category.
num_particles_selected	bigint	The number of particles selected from the projection set of images.

em_sample_support

Column	Type	Description
emdb_id	text
id	text	PRIMARY KEY
film_material	text	The support material covering the em grid.
grid_material	text	The name of the material from which the grid is made.
grid_mesh_size	integer	The value of the mesh size (divisions per inch) of the em grid.
grid_type	text	A description of the grid type.
pretreatment	text	A description of the grid plus support film pretreatment.
details	text	Any additional details concerning the sample support.
specimen_id	text	This data item is a pointer to _em_sample_preparation.id in the EM_SPECIMEN category.

em_single_particle_entity

Column	Type	Description
emdb_id	text
entry_id	text	This data item is a pointer to _entry.id in the ENTRY category.
id	integer	PRIMARY KEY
image_processing_id	text	pointer to _em_image_processing.id.
point_symmetry	text	Point symmetry symbol, either Cn, Dn, T, O, or I

em_software

Column	Type	Description
emdb_id	text
category	text	The purpose of the software.
details	text	Details about the software used.
id	text	PRIMARY KEY
image_processing_id	text	pointer to _em_image_processing.id in the EM_IMAGE_PROCESSING category.
fitting_id	text	pointer to _em_3d_fitting.id in the EM_3D_FITTING category.
imaging_id	text	pointer to _em_imaging.id in the EM_IMAGING category.
name	text	The name of the software package used, e.g., RELION. Depositors are strongly encouraged to provide a value in this field.
version	text	The version of the software.

em_specimen

Column	Type	Description
emdb_id	text
concentration	double precision	The concentration (in milligrams per milliliter, mg/ml) of the complex in the sample.
details	text	A description of any additional details of the specimen preparation.
embedding_applied	boolean	'YES' indicates that the specimen has been embedded.
experiment_id	text	Pointer to _em_experiment.id.
id	text	PRIMARY KEY
shadowing_applied	boolean	'YES' indicates that the specimen has been shadowed.
staining_applied	boolean	'YES' indicates that the specimen has been stained.
vitrification_applied	boolean	'YES' indicates that the specimen was vitrified by cryopreservation.

em_staining

Column	Type	Description
emdb_id	text
details	text	Staining procedure used in the specimen preparation.
id	text	PRIMARY KEY
material	text	The staining material.
specimen_id	text	Foreign key relationship to the EM SPECIMEN category
type	text	type of staining

em_start_model

Column	Type	Description
emdb_id	text	EMDB id of the map used as the startup model
details	text	Any additional details about generating the startup model
id	text	PRIMARY KEY
image_processing_id	text	Foreign key to the EM_IMAGE_PROCESSING category
insilico_model	text	Description of the "in silico" model used to generate the startup model
orthogonal_tilt_angle1	double precision	Tilt angle for the 1st image set of the orthogonal tilt pairs
orthogonal_tilt_angle2	double precision	Tilt angle for the 2nd image set of the orthogonal tilt pairs
orthogonal_tilt_num_images	integer	number of images used to generate the orthogonal tilt startup model
other	text	Description of other method/source used to generate the startup model
pdb_id	text	PDB id of the model coordinates used to generate the startup model
random_conical_tilt_angle	double precision	Angular difference between the conical tilt images used to generate the startup model
random_conical_tilt_num_images	integer	number of images used to generate the random conical tilt startup model
type	text	Type of startup model (map density) used to initiate the reconstruction

em_supersede

Column	Type	Description
emdb_id	text
entry	text	Newer entry that replaces this entry
id	text	PRIMARY KEY

em_support_film

Column	Type	Description
emdb_id	text
id	text	PRIMARY KEY
material	text	The support material covering the em grid.
sample_support_id	text	Pointer to EM SAMPLE SUPPORT
thickness	double precision	Thickness of the support film, in angstroms
topology	text	The topology of the material from which the grid is made.

em_tomography

Column	Type	Description
emdb_id	text
axis1_angle_increment	double precision	The angle increment of specimen tilting to obtain the recorded images (axis 1).
axis1_max_angle	double precision	The maximum angle at which the specimen was tilted to obtain recorded images (axis 1).
axis1_min_angle	double precision	The minimum angle at which the specimen was tilted to obtain recorded images (axis 1).
axis2_angle_increment	double precision	The angle increment of specimen tilting to obtain the recorded images (axis 2).
axis2_max_angle	double precision	The maximum angle at which the specimen was tilted to obtain recorded images (axis 2).
axis2_min_angle	double precision	The minimum angle at which the specimen was tilted to obtain recorded images (axis 2).
id	text	PRIMARY KEY
imaging_id	text	Foreign key to the EM IMAGING category

em_tomography_specimen

Column	Type	Description
emdb_id	text
cryo_protectant	text	The type of cryo-protectant used during specimen preparation.
details	text	Any additional details about specimen preparation.
fiducial_markers	text	'YES' indicates that fiducial markers were used in the specimen preparation
high_pressure_freezing	text	'YES' indicates that high pressure freezing was used in the specimen preparation
id	text	PRIMARY KEY
sectioning	text	The type of sectioning performed during specimen preparation.
specimen_id	text	Foreign key relationship to the EM SPECIMEN category

em_ultramicrotomy

Column	Type	Description
emdb_id	text
details	text	Additional details about the ultramicrotomy sample preparation
em_tomography_specimen_id	text	Foreign key relationship to the EM TOMOGRAPHY SPECIMEN category
final_thickness	integer	Final thickness of the sectioned sample, in nanometers
id	text	PRIMARY KEY
instrument	text	Ultramicrotome instrument used for sectioning
temperature	integer	Temperature of the sample during microtome sectioning, in kelvins

em_virus_entity

Column	Type	Description
emdb_id	text
id	text	PRIMARY KEY
virus_type	text	The type of virus.
virus_isolate	text	The isolate from which the virus was obtained.
entity_assembly_id	text	This data item is a pointer to _em_virus_entity.id in the ENTITY_ASSEMBLY category.
enveloped	text	Flag to indicate if the virus is enveloped or not.
empty	text	Flag to indicate if the virus is empty or not.

em_virus_natural_host

Column	Type	Description
emdb_id	text
entity_assembly_id	text	Pointer to _em_entity_assembly.id.
id	text	PRIMARY KEY
ncbi_tax_id	integer	The NCBI taxonomy id for the natural host organism of the virus
organism	text	The host organism from which the virus was isolated.
strain	text	The strain of the host organism from which the virus was obtained, if relevant.

em_virus_shell

Column	Type	Description
emdb_id	text
diameter	double precision	The value of the diameter (in angstroms) for this virus shell.
entity_assembly_id	text	The value of _em_virus_shell.entity_assembly_id is a pointer to _em_entity_assembly.id category.
id	text	PRIMARY KEY
name	text	The name for this virus shell.
triangulation	integer	The triangulation number, T, describes the organization of subunits within an icosahedron. T is defined as T= h^2 + h*k + k^2, where h and k are positive integers that define the position of the five-fold vertex on the original hexagonal net.

em_virus_synthetic

Column	Type	Description
emdb_id	text
entity_assembly_id	text	Pointer to _em_entity_assembly.id.
id	text	PRIMARY KEY
organism	text	The host organism from which the virus was isolated.
ncbi_tax_id	integer	The NCBI taxonomy ID of the host species from which the virus was isolated
strain	text	The strain of the host organism from which the virus was obtained, if relevant.

em_vitrification

Column	Type	Description
emdb_id	text
entry_id	text	This data item is a pointer to _entry.id in the ENTRY category.
id	text	PRIMARY KEY
specimen_id	text	This data item is a pointer to _em_specimen.id
cryogen_name	text	This is the name of the cryogen.
humidity	double precision	Relative humidity (%) of air surrounding the specimen just prior to vitrification.
temp	double precision	The vitrification temperature (in kelvin), e.g., temperature of the plunge instrument cryogen bath.
chamber_temperature	double precision	The temperature (in kelvin) of the sample just prior to vitrification.
instrument	text	The type of instrument used in the vitrification process.
details	text	Any additional details relating to vitrification.

em_volume_selection

Column	Type	Description
emdb_id	text
details	text	Any additional details used for selecting volumes.
id	text	PRIMARY KEY
image_processing_id	text	The value of _em_volume_selection.image_processing_id points to the EM_IMAGE_PROCESSING category.
method	text	The method used for selecting volumes.
num_tomograms	integer	The number of tomograms used in the extraction/selection
num_volumes_extracted	integer	The number of volumes selected from the projection set of images.
reference_model	text	Description of reference model used for volume selection

entity

Column	Type	Description
emdb_id	text
details	text	A description of special aspects of the entity.
formula_weight	double precision	Formula mass in daltons of the entity.
id	text	The value of _entity.id must uniquely identify a record in the ENTITY list. Note that this item need not be a number; it can be any unique identifier.
src_method	text	The method by which the sample for the entity was produced. Entities isolated directly from natural sources (tissues, soil samples etc.) are expected to have further information in the ENTITY_SRC_NAT category. Entities isolated from genetically manipulated sources are expected to have further information in the ENTITY_SRC_GEN category.
type	text	Defines the type of the entity. Polymer entities are expected to have corresponding ENTITY_POLY and associated entries. Non-polymer entities are expected to have corresponding CHEM_COMP and associated entries. Water entities are not expected to have corresponding entries in the ENTITY category.
pdbx_description	text	A description of the entity. Corresponds to the compound name in the PDB format.
pdbx_number_of_molecules	integer	A place holder for the number of molecules of the entity in the entry.
pdbx_mutation	text	Details about any entity mutation(s).
pdbx_fragment	text	Entity fragment description(s).
pdbx_ec	text	Enzyme Commission (EC) number(s)

entity_poly

Column	Type	Description
emdb_id	text
entity_id	text	This data item is a pointer to _entity.id in the ENTITY category.
type	text	The type of the polymer.
pdbx_seq_one_letter_code	text	Sequence of protein or nucleic acid polymer in standard one-letter codes of amino acids or nucleotides. Non-standard amino acids/nucleotides are represented by their Chemical Component Dictionary (CCD) codes in parenthesis. Deoxynucleotides are represented by the specially-assigned 2-letter CCD codes in parenthesis, with 'D' prefix added to their ribonucleotide counterparts. For hybrid polymer, each residue is represented by the code of its individual type. A cyclic polymer is represented in linear sequence from the chosen start to end. A for Alanine or Adenosine-5'-monophosphate C for Cysteine or Cytidine-5'-monophosphate D for Aspartic acid E for Glutamic acid F for Phenylalanine G for Glycine or Guanosine-5'-monophosphate H for Histidine I for Isoleucine or Inosinic Acid L for Leucine K for Lysine M for Methionine N for Asparagine or Unknown ribonucleotide O for Pyrrolysine P for Proline Q for Glutamine R for Arginine S for Serine T for Threonine U for Selenocysteine or Uridine-5'-monophosphate V for Valine W for Tryptophan Y for Tyrosine (DA) for 2'-deoxyadenosine-5'-monophosphate (DC) for 2'-deoxycytidine-5'-monophosphate (DG) for 2'-deoxyguanosine-5'-monophosphate (DT) for Thymidine-5'-monophosphate (MSE) for Selenomethionine (SEP) for Phosphoserine (TPO) for Phosphothreonine (PTR) for Phosphotyrosine (PCA) for Pyroglutamic acid (UNK) for Unknown amino acid (ACE) for Acetylation cap (NH2) for Amidation cap

entity_src_gen

Column	Type	Description
emdb_id	text
entity_id	text	This data item is a pointer to _entity.id in the ENTITY category.
gene_src_common_name	text	The common name of the natural organism from which the gene was obtained.
gene_src_details	text	A description of special aspects of the natural organism from which the gene was obtained.
gene_src_genus	text	The genus of the natural organism from which the gene was obtained.
gene_src_species	text	The species of the natural organism from which the gene was obtained.
gene_src_strain	text	The strain of the natural organism from which the gene was obtained, if relevant.
gene_src_tissue	text	The tissue of the natural organism from which the gene was obtained.
pdbx_gene_src_gene	text	Identifies the gene.
pdbx_gene_src_scientific_name	text	Scientific name of the organism.
pdbx_gene_src_variant	text	Identifies the variant.
pdbx_gene_src_cell_line	text	The specific line of cells.
pdbx_gene_src_atcc	text	American Type Culture Collection tissue culture number.
pdbx_gene_src_organ	text	Organized group of tissues that carries on a specialized function.
pdbx_gene_src_cell	text	Cell type.
pdbx_host_org_organ	text	Specific organ which expressed the molecule.
pdbx_host_org_organelle	text	Specific organelle which expressed the molecule.
pdbx_host_org_cellular_location	text	Identifies the location inside (or outside) the cell which expressed the molecule.
pdbx_host_org_strain	text	The strain of the organism in which the entity was expressed.
pdbx_description	text	Information on the source which is not given elsewhere.
host_org_common_name	text	The common name of the organism that served as host for the production of the entity. Where full details of the protein production are available it would be expected that this item be derived from _entity_src_gen_express.host_org_common_name or via _entity_src_gen_express.host_org_tax_id
host_org_details	text	A description of special aspects of the organism that served as host for the production of the entity. Where full details of the protein production are available it would be expected that this item would derived from _entity_src_gen_express.host_org_details
plasmid_details	text	A description of special aspects of the plasmid that produced the entity in the host organism. Where full details of the protein production are available it would be expected that this item would be derived from _pdbx_construct.details of the construct pointed to from _entity_src_gen_express.plasmid_id.
plasmid_name	text	The name of the plasmid that produced the entity in the host organism. Where full details of the protein production are available it would be expected that this item would be derived from _pdbx_construct.name of the construct pointed to from _entity_src_gen_express.plasmid_id.
pdbx_host_org_variant	text	Variant of the organism used as the expression system. Where full details of the protein production are available it would be expected that this item be derived from entity_src_gen_express.host_org_variant or via _entity_src_gen_express.host_org_tax_id
pdbx_host_org_cell_line	text	A specific line of cells used as the expression system. Where full details of the protein production are available it would be expected that this item would be derived from entity_src_gen_express.host_org_cell_line
pdbx_host_org_atcc	text	Americal Tissue Culture Collection of the expression system. Where full details of the protein production are available it would be expected that this item would be derived from _entity_src_gen_express.host_org_culture_collection
pdbx_host_org_culture_collection	text	Culture collection of the expression system. Where full details of the protein production are available it would be expected that this item would be derived somehwere, but exactly where is not clear.
pdbx_host_org_cell	text	Cell type from which the gene is derived. Where entity.target_id is provided this should be derived from details of the target.
pdbx_host_org_scientific_name	text	The scientific name of the organism that served as host for the production of the entity. Where full details of the protein production are available it would be expected that this item would be derived from _entity_src_gen_express.host_org_scientific_name or via _entity_src_gen_express.host_org_tax_id
pdbx_host_org_tissue	text	The specific tissue which expressed the molecule. Where full details of the protein production are available it would be expected that this item would be derived from _entity_src_gen_express.host_org_tissue
pdbx_host_org_vector	text	Identifies the vector used. Where full details of the protein production are available it would be expected that this item would be derived from _entity_src_gen_clone.vector_name.
pdbx_host_org_vector_type	text	Identifies the type of vector used (plasmid, virus, or cosmid). Where full details of the protein production are available it would be expected that this item would be derived from _entity_src_gen_express.vector_type.
pdbx_gene_src_ncbi_taxonomy_id	text	NCBI Taxonomy identifier for the gene source organism. Reference: Wheeler DL, Chappey C, Lash AE, Leipe DD, Madden TL, Schuler GD, Tatusova TA, Rapp BA (2000). Database resources of the National Center for Biotechnology Information. Nucleic Acids Res 2000 Jan 1;28(1):10-4 Benson DA, Karsch-Mizrachi I, Lipman DJ, Ostell J, Rapp BA, Wheeler DL (2000). GenBank. Nucleic Acids Res 2000 Jan 1;28(1):15-18.
pdbx_host_org_ncbi_taxonomy_id	text	NCBI Taxonomy identifier for the expression system organism. Reference: Wheeler DL, Chappey C, Lash AE, Leipe DD, Madden TL, Schuler GD, Tatusova TA, Rapp BA (2000). Database resources of the National Center for Biotechnology Information. Nucleic Acids Res 2000 Jan 1;28(1):10-4 Benson DA, Karsch-Mizrachi I, Lipman DJ, Ostell J, Rapp BA, Wheeler DL (2000). GenBank. Nucleic Acids Res 2000 Jan 1;28(1):15-18.
pdbx_src_id	integer	This data item is an ordinal identifier for entity_src_gen data records.
pdbx_alt_source_flag	text	This data item identifies cases in which an alternative source modeled.
pdbx_seq_type	text	This data item povides additional information about the sequence type.
pdbx_beg_seq_num	integer	The beginning polymer sequence position for the polymer section corresponding to this source. A reference to the sequence position in the entity_poly category.
pdbx_end_seq_num	integer	The ending polymer sequence position for the polymer section corresponding to this source. A reference to the sequence position in the entity_poly category.

entity_src_nat

Column	Type	Description
emdb_id	text
common_name	text	The common name of the organism from which the entity was isolated.
details	text	A description of special aspects of the organism from which the entity was isolated.
entity_id	text	This data item is a pointer to _entity.id in the ENTITY category.
genus	text	The genus of the organism from which the entity was isolated.
strain	text	The strain of the organism from which the entity was isolated.
tissue	text	The tissue of the organism from which the entity was isolated.
pdbx_organism_scientific	text	Scientific name of the organism of the natural source.
pdbx_variant	text	Identifies the variant.
pdbx_cell_line	text	The specific line of cells.
pdbx_atcc	text	Americal Tissue Culture Collection number.
pdbx_cellular_location	text	Identifies the location inside (or outside) the cell.
pdbx_organ	text	Organized group of tissues that carries on a specialized function.
pdbx_cell	text	A particular cell type.
pdbx_plasmid_details	text	Details about the plasmid.
pdbx_ncbi_taxonomy_id	text	NCBI Taxonomy identifier for the source organism. Reference: Wheeler DL, Chappey C, Lash AE, Leipe DD, Madden TL, Schuler GD, Tatusova TA, Rapp BA (2000). Database resources of the National Center for Biotechnology Information. Nucleic Acids Res 2000 Jan 1;28(1):10-4 Benson DA, Karsch-Mizrachi I, Lipman DJ, Ostell J, Rapp BA, Wheeler DL (2000). GenBank. Nucleic Acids Res 2000 Jan 1;28(1):15-18.
pdbx_src_id	integer	This data item is an ordinal identifier for entity_src_nat data records.
pdbx_alt_source_flag	text	This data item identifies cases in which an alternative source modeled.
pdbx_beg_seq_num	integer	The beginning polymer sequence position for the polymer section corresponding to this source. A reference to the sequence position in the entity_poly category.
pdbx_end_seq_num	integer	The ending polymer sequence position for the polymer section corresponding to this source. A reference to the sequence position in the entity_poly category.

entry

Column	Type	Description
emdb_id	text
id	text	The value of _entry.id identifies the data block. Note that this item need not be a number; it can be any unique identifier.

exptl

Column	Type	Description
emdb_id	text
entry_id	text	This data item is a pointer to _entry.id in the ENTRY category.
method	text	The method used in the experiment.

link_entry_pdbjplus

Column	Type	Description
emdb_id	text
db_name	text
db_accession	text[]

pdbx_audit_revision_category

Column	Type	Description
emdb_id	text
ordinal	integer	A unique identifier for the pdbx_audit_revision_category record.
revision_ordinal	integer	A pointer to _pdbx_audit_revision_history.ordinal
data_content_type	text	The type of file that the pdbx_audit_revision_history record refers to.
category	text	The category updated in the pdbx_audit_revision_category record.

pdbx_audit_revision_details

Column	Type	Description
emdb_id	text
ordinal	integer	A unique identifier for the pdbx_audit_revision_details record.
revision_ordinal	integer	A pointer to _pdbx_audit_revision_history.ordinal
data_content_type	text	The type of file that the pdbx_audit_revision_history record refers to.
provider	text	The provider of the revision.
type	text	A type classification of the revision
description	text	Additional details describing the revision.
details	text	Further details describing the revision.

pdbx_audit_revision_group

Column	Type	Description
emdb_id	text
ordinal	integer	A unique identifier for the pdbx_audit_revision_group record.
revision_ordinal	integer	A pointer to _pdbx_audit_revision_history.ordinal
data_content_type	text	The type of file that the pdbx_audit_revision_history record refers to.
group	text	The collection of categories updated with this revision.

pdbx_audit_revision_history

Column	Type	Description
emdb_id	text
ordinal	integer	A unique identifier for the pdbx_audit_revision_history record.
data_content_type	text	The type of file that the pdbx_audit_revision_history record refers to.
major_revision	integer	The major version number of deposition release.
minor_revision	integer	The minor version number of deposition release.
revision_date	date	The release date of the revision
part_number	integer	The part number of the content_type file correspondng to this milestone file

pdbx_audit_revision_item

Column	Type	Description
emdb_id	text
ordinal	integer	A unique identifier for the pdbx_audit_revision_item record.
revision_ordinal	integer	A pointer to _pdbx_audit_revision_history.ordinal
data_content_type	text	The type of file that the pdbx_audit_revision_history record refers to.
item	text	A high level explanation the author has provided for submitting a revision.

pdbx_audit_support

Column	Type	Description
emdb_id	text
funding_organization	text	The name of the organization providing funding support for the entry.
country	text	The country/region providing the funding support for the entry.
grant_number	text	The grant number associated with this source of support.
details	text	Additional details regarding the funding of this entry
ordinal	integer	A unique sequential integer identifier for each source of support for this entry.

pdbx_database_related

Column	Type	Description
emdb_id	text
db_name	text	The name of the database containing the related entry.
details	text	A description of the related entry.
db_id	text	The identifying code in the related database.
content_type	text	The identifying content type of the related entry.

pdbx_entity_nonpoly

Column	Type	Description
emdb_id	text
entity_id	text	This data item is a pointer to _entity.id in the ENTITY category.
comp_id	text	This data item is a pointer to _chem_comp.id in the CHEM_COMP category.
name	text	A name for the non-polymer entity

pdbx_entity_src_syn

Column	Type	Description
emdb_id	text
details	text	A description of special aspects of the source for the synthetic entity.
organism_scientific	text	The scientific name of the organism from which the sequence of the synthetic entity was derived.
organism_common_name	text	The common name of the organism from which the sequence of the synthetic entity was derived.
strain	text	The strain of the organism from which the sequence of the synthetic entity was derived.
ncbi_taxonomy_id	text	NCBI Taxonomy identifier of the organism from which the sequence of the synthetic entity was derived. Reference: Wheeler DL, Chappey C, Lash AE, Leipe DD, Madden TL, Schuler GD, Tatusova TA, Rapp BA (2000). Database resources of the National Center for Biotechnology Information. Nucleic Acids Res 2000 Jan 1;28(1):10-4 Benson DA, Karsch-Mizrachi I, Lipman DJ, Ostell J, Rapp BA, Wheeler DL (2000). GenBank. Nucleic Acids Res 2000 Jan 1;28(1):15-18.
entity_id	text	This data item is a pointer to _entity.id in the ENTITY category.
pdbx_src_id	integer	This data item is an ordinal identifier for pdbx_entity_src_syn data records.
pdbx_alt_source_flag	text	This data item identifies cases in which an alternative source modeled.
pdbx_beg_seq_num	integer	The beginning polymer sequence position for the polymer section corresponding to this source. A reference to the sequence position in the entity_poly category.
pdbx_end_seq_num	integer	The ending polymer sequence position for the polymer section corresponding to this source. A reference to the sequence position in the entity_poly category.

pdbx_initial_refinement_model

Column	Type	Description
emdb_id	text
id	integer	A unique identifier for the starting model record.
type	text	This item describes the type of the initial model was generated
source_name	text	This item identifies the resource of initial model used for refinement
accession_code	text	This item identifies an accession code of the resource where the initial model is used
details	text	A description of special aspects of the initial model

struct_keywords

Column	Type	Description
emdb_id	text
entry_id	text	This data item is a pointer to _entry.id in the ENTRY category.
text	text	Keywords describing this structure.
pdbx_keywords	text	Terms characterizing the macromolecular structure.
pdbx_details	text	Keywords describing this structure. This is constructed by the PROGRAM for the PDB KEYWRD record.

struct_ref

Column	Type	Description
emdb_id	text
db_code	text	The code for this entity or biological unit or for a closely related entity or biological unit in the named database.
db_name	text	The name of the database containing reference information about this entity or biological unit.
entity_id	text	This data item is a pointer to _entity.id in the ENTITY category.
id	text	The value of _struct_ref.id must uniquely identify a record in the STRUCT_REF list. Note that this item need not be a number; it can be any unique identifier.