DiffDock: Molecular Docking with Diffusion Models

Overview

DiffDock is a diffusion-based deep learning tool for molecular docking that predicts 3D binding poses of small molecule ligands to protein targets. It represents the state-of-the-art in computational docking, crucial for structure-based drug discovery and chemical biology.

Core Capabilities:

• Predict ligand binding poses with high accuracy using deep learning
• Support protein structures (PDB files) or sequences (via ESMFold)
• Process single complexes or batch virtual screening campaigns
• Generate confidence scores to assess prediction reliability
• Handle diverse ligand inputs (SMILES, SDF, MOL2)

Key Distinction: DiffDock predicts binding poses (3D structure) and confidence (prediction certainty), NOT binding affinity (ΔG, Kd). Always combine with scoring functions (GNINA, MM/GBSA) for affinity assessment.

When to Use This Skill

This skill should be used when:

• "Dock this ligand to a protein" or "predict binding pose"
• "Run molecular docking" or "perform protein-ligand docking"
• "Virtual screening" or "screen compound library"
• "Where does this molecule bind?" or "predict binding site"
• Structure-based drug design or lead optimization tasks
• Tasks involving PDB files + SMILES strings or ligand structures
• Batch docking of multiple protein-ligand pairs

Installation and Environment Setup

Check Environment Status

Before proceeding with DiffDock tasks, verify the environment setup:

# Use the provided setup checker
python scripts/setup_check.py

This script validates Python version, PyTorch with CUDA, PyTorch Geometric, RDKit, ESM, and other dependencies.

Installation Options

Option 1: Conda (Recommended)

git clone https://github.com/gcorso/DiffDock.git
cd DiffDock
conda env create --file environment.yml
conda activate diffdock