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Tags: protein, prediction
AlphaFold2 is a protein structure prediction model developed by DeepMind. To run AlphaFold2, you'll need to follow these steps:
Clone the AlphaFold repository:
git clone https://github.com/deepmind/alphafold.git
cd alphafold
Set up the environment:
You will need to install the necessary dependencies for AlphaFold. It's recommended to use a Python virtual environment or a Conda environment.
If you're using a Python virtual environment, create and activate it:
python3 -m venv alphafold_venv
source alphafold_venv/bin/activate
Then install the required packages:
pip install -r requirements.txt
If you prefer to use Conda, create a Conda environment and activate it:
conda create -n alphafold python=3.8
conda activate alphafold
Then install the required packages:
conda install -c conda-forge openmm
conda install -c conda-forge pdbfixer
pip install -r requirements.txt
Download the necessary model data:
You need to download the model parameters and databases. Create a directory to store the data:
mkdir data
Download the model parameters from the AlphaFold GitHub repository:
wget -P data/ https://storage.googleapis.com/alphafold/alphafold_params_2021-07-14.tar
tar -xf data/alphafold_params_2021-07-14.tar -C data/
Download the necessary databases (e.g., UniRef, BFD, and MGnify). You can find instructions on how to download them in the README.md file in the AlphaFold repository or on their respective websites.
Run AlphaFold2:
You can run the AlphaFold2 using the provided run_alphafold.py script. For example, to predict the structure of a protein with the sequence in input.fasta, you can use the following command:
python run_alphafold.py --fasta_paths=input.fasta --output_dir=output/ --preset=full_dbs --max_template_date=2099-12-31 --data_dir=data/
This command will run the full AlphaFold2 pipeline with all available databases and store the resulting structures in the output/ directory.
Make sure to replace input.fasta with the path to your input FASTA file, and adjust other options as needed.
Analyze the results:
After the prediction is finished, you can find the predicted structures in the output/ directory. The PDB files can be visualized using molecular visualization software such as PyMOL, Chimera, or VMD.
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