Protenix: High-Accuracy Biomolecular Complex Prediction Now Available on Vecura

What is Protenix?

Protenix is an open-source reimplementation of AlphaFold 3, designed by ByteDance to predict the high-accuracy 3D atomic structures of complex biomolecular assemblies. It processes a unified input—including proteins, DNA, RNA, ligands, and ions—to generate detailed structural predictions. By utilizing an architecture that features a Pairformer trunk and a diffusion-based structure decoder, it delivers results comparable to state-of-the-art models.

It helps users bridge the gap between sequence data and structural biology by generating 3D models for targets lacking experimental data. It is especially useful for researchers exploring protein-ligand binding, antibody-antigen interactions, and multi-chain assemblies in drug discovery and structural biology workflows.

What can users do with Protenix on Vecura?

With Protenix on Vecura, users can:

• Predict 3D structures for complex multi-entity systems, including proteins paired with RNA, DNA, or small-molecule ligands.
• Leverage configurable inference parameters like recycling cycles and diffusion seeds to balance prediction accuracy with computational speed.
• Access high-performance variants, from the precision-focused protenix-v2 to resource-efficient mini and tiny models.
• Integrate structural outputs directly into downstream computational pipelines such as docking, molecular dynamics, and protein design.

What the output means

The output provides an mmCIF structure file representing the predicted 3D atomic assembly, accompanied by a comprehensive summary_confidence object. Key metrics include per-residue pLDDT, interface pTM (ipTM) for assessing complex stability, and global predicted distance error (gPDE).

This output should be used to support scientific decision-making, such as prioritizing binding candidates or guiding experimental design. It does not replace experimental validation, such as X-ray crystallography or cryo-EM.

Why this matters

In the era of AI-driven structural biology, the ability to rapidly predict the interaction between diverse biomolecules is a game-changer for pharmaceutical research and biotechnology. Protenix democratizes access to AlphaFold 3-level performance, allowing researchers to simulate complex biological interfaces that were previously difficult to model accurately.

By integrating this tool into platforms like Vecura, researchers can bypass the significant infrastructure challenges associated with managing large-scale GPU workloads and complex software dependencies, enabling them to focus entirely on their scientific hypotheses.

• Developed by: ByteDance
• Source: Official GitHub Repository
• Reference: Protenix-v1 Technical Report (bioRxiv)