zsasa

High-performance Solvent Accessible Surface Area (SASA) calculator in Zig. The current benchmark suite covers FreeSASA agreement, proteome-scale batch throughput, large single structures, and low-memory MD trajectory analysis.

Quick Start

Python

pip install zsasa
# or
uv add zsasa

import numpy as np
from zsasa import calculate_sasa

coords = np.array([[0.0, 0.0, 0.0], [3.0, 0.0, 0.0]])
radii = np.array([1.5, 1.5])
result = calculate_sasa(coords, radii)
print(f"Total SASA: {result.total_area:.2f} Ų")

CLI

# One-line install
curl -fsSL https://raw.githubusercontent.com/N283T/zsasa/main/install.sh | sh

# Or with Nix
nix run github:N283T/zsasa -- calc structure.cif output.json

zsasa calc structure.cif output.json

Documentation

Section	Description
Getting Started	Install zsasa and run first CLI/Python calculations
Choosing CLI or Python	Pick the right interface for your data and workflow
Batch Processing	Process directories, JSONL output, residue maps, and chain filters
Workflow Files	Reproducible TOML workflows for calc and batch jobs
Classifiers and CCD	Atom radius assignment, CCD dictionaries, and custom classifiers
Trajectory Analysis	MD trajectory SASA with CLI and Python integrations
CLI Reference	Command syntax and option reference
Python API	Python bindings, core API, and integrations
Benchmarks	Performance and accuracy benchmarks
Comparison	How zsasa compares to FreeSASA, RustSASA, and Lahuta