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PLIP - Protein-Ligand Interaction Profiler

In-house version of Salentin's code (https://github.com/ssalentin/plip)

PLIP

Analyses interactions in 3 steps:

  1. Detects atoms and groups with specific properties in the receptor and in the ligand

  2. Detects interactions between receptor and ligand

  3. Refines interactions to avoid double counts

  • Hydrophobic interactions:
    • Remove hydrophobic contacts for atoms that also interact via pi-hydrophobic,
    • Filter out contacts that involve an atom also involved in another hydrophobic interaction
  • Pi-Cation interactions:
    • If pi-cation and pi-stacking reported for the same L-P residues, keep the pi-stacking (e.g. histidine rings also positively charged)
  • Pi-Hydrophobic interactions:
    • Filter out contacts that involve an atom also involved in another pi-hydrophobic interaction
  • H-Bonds:
    • Remove contact if donor AND acceptor form a salt bridge
    • Remove contact if H-bond actually part of a water bridge
    • Remove contact if ligand atom part of a metal complex and H-bond with a binder of that same complex
    • Allow only one H-bond per donor
  • Water Bridges:
    • If water bridge with a water involved in a metal complex, keep the metal complex (water molecules coordinated to metals tend to form lots of water bridges and H-bonds just because they are close, but angles can be unrealistic)

Installation

Poetry

After installing poetry, you can install the environment:

poetry install

Don't forget to update the lock file if the dependencies have change:

poetry lock

Pre-commit

Pre-commit add a hook before your commit and run flake8, black, mypy and other checks.

To install pre-commit:

brew install pre-commit

To set the hook on the repository

pre-commit install

Environnement

Useful commands:

# Run tests
poetry run task test

# Indent your files with black
poetry run task black

# Check your code with mypy
poetry run task mypy

# Check style
poetry run task linter

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