protenix

Predict 3D structures for protein, DNA, RNA, ligand, and ion complexes.

11|Updated Mar 4, 2026
One-click install
npx skills add https://github.com/junior1p/ProteinClaw --skill protenix
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: protenix
Source: https://github.com/junior1p/ProteinClaw/tree/main/skills/protenix
Command: npx skills add https://github.com/junior1p/ProteinClaw --skill protenix

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Predict high-accuracy 3D structures for protein, nucleic acid, ligand, and ion complexes to validate designs and inform experimental prioritization, while providing confidence metrics for ranking candidates.

Core Features & Use Cases

  • AF3 reproduction: ByteDance's Protenix provides AlphaFold 3-level accuracy in an open-source PyTorch implementation for structure prediction.
  • Flexible input and entity support: Accepts FASTA and Protenix JSON inputs and handles protein, DNA, RNA, ligand (SMILES), and ion entities.
  • MSA-free fast mode and multi-seed ensembles: Run rapid predictions without MSA for high-throughput campaigns or enable MSA for higher accuracy and use multi-seed ensembles for robust confidence estimates.
  • Outputs and integration: Produces CIF structure files and confidence JSON (pLDDT, pTM, ipTM) and integrates with downstream QC and campaign skills for filtering and ranking.

Quick Start

Run Protenix on my complex.faa with seeds 42,43,44 using no-use-msa to generate CIF models and a confidence JSON for ranking.

Frequently Asked Questions about protenix

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I predict 3D structures for protein and nucleic acid complexes?

You can predict 3D structures for protein, DNA, RNA, ligand, and ion complexes by submitting FASTA or Protenix JSON inputs to generate CIF structure files and confidence JSON metrics for validation and experimental prioritization.

What is MSA-free mode for high-throughput protein structure prediction?

MSA-free mode allows you to run rapid predictions without multiple sequence alignments, enabling high-throughput structural campaigns while still producing CIF models and confidence metrics for evaluating complex designs.

How do I generate multi-seed ensembles for robust protein complex confidence estimates?

To generate multi-seed ensembles for robust confidence estimates, you specify multiple seeds during your structure prediction run, which produces varied CIF models and confidence metrics to help validate your protein complex designs.

Can I predict protein-ligand complex structures using SMILES inputs?

Yes, protein-ligand complex structure prediction supports SMILES inputs for ligand entities alongside protein, DNA, RNA, and ion entities, outputting CIF structure files and confidence JSON metrics for downstream analysis.

Does AlphaFold 3-level accuracy structure prediction require GPU acceleration?

AF3-quality structure prediction via this PyTorch implementation recommends GPU acceleration with 24 to 48GB VRAM to efficiently process single-chain and multi-chain complex predictions and generate CIF output files.

What confidence metrics are outputted for protein complex structure prediction?

Structure prediction outputs a confidence JSON file containing pLDDT, pTM, and ipTM metrics, which are used for ranking candidates, filtering designs, and integrating with downstream QC and campaign skills.