<div align="center">

ATOMRefine: 3D equivariant graph transformer for all-atom refinement of protein tertiary structures

</div>

Description

Atomic protein structure refinement using all-atom graph representations and SE(3)–equivariant graph neural networks

Installation

git clone https://github.com/BioinfoMachineLearning/ATOMRefine.git
cd ATOMRefine
conda env create -f ATOMRefine-linux-cu101.yml
cd YOUR_ENV/lib/python3.8/site-packages
patch -p0 < ATOMRefine/amber/openmm.patch

Prediction

conda activate ATOMRefine
sh refine.sh <init_pdb> <target_id> <seq_length> <outdir>

Inputs:
init_pdb: starting model in pdb format
target_id: protein target id
seq_length: protein sequence seq_length
outdir: output folder

e.g.  sh refine.sh example/T1062.pdb T1062 35 output
Expected outputs:
Five refined models in pdb format

Data

All the required data for training are provided as below and avaiable at :

• Alphafold2 models (AF2_model.tar.gz)
• target.lst for training (AF2 id and its corresponding true pdb id)
• True experimental structures (true_experimental_structure.tar.gz)

Training

cd data
wget https://zenodo.org/record/6944368/files/AF2_model.tar.gz
wget https://zenodo.org/record/6944368/files/true_experimental_structure.tar.gz
tar xvzf AF2_model.tar.gz
tar xvzf true_experimental_structure.tar.gz

conda activate ATOMRefine
python train.py --data <data_dir> --out_path <out_dir> --lst 1
lst: training set id (1 - 10) as 10 folds
e.g. python train.py --data data/train_lst --out_path model --lst 1

References

Wu, T., Guo, Z., & Cheng, J. (2023). Atomic protein structure refinement using all-atom graph representations and SE (3)-equivariant graph transformer. Bioinformatics, 39(5), btad298

Declaration:

The code in this repository's folder ./amber reuse the source code from AlphaFold, which has been used under Apache-2.0 license, see the license ./amber/LICENSE.