PyContact

PyContact analyzes non-covalent interactions in molecular dynamics (MD) trajectories to identify and quantify time-dependent interaction networks for structural and functional interpretation.

Key Features:

• Non-covalent Interaction Identification: Detects and catalogs noncovalent interactions from MD trajectories.
• Time-Resolved Network Analysis: Evaluates the time-dependent evolution of complex noncovalent interaction networks.
• Statistical Analysis and Mapping: Integrates statistical analysis with full mapping of interactions onto the molecular system.
• Visualization and VMD Integration: Provides visualization capabilities and synergy with VMD (Visual Molecular Dynamics) for mapping interactions onto structures.
• Customization and Extension: Supports customization and extension of analysis workflows and metrics for advanced studies.

Scientific Applications:

• Ion Permeation Pathway Analysis: Applied to analyze noncovalent interactions underlying the ion permeation pathway of the human P2X3 receptor.
• Protein-Protein Interaction Networks: Used to examine the protein-protein interaction network within the mechanically ultrastable cohesin-dockering complex.

Methodology:

Analysis of MD trajectories to identify noncovalent interactions, evaluation of their time-dependent network evolution, statistical analysis with mapping onto the molecular system, and integration with VMD for visualization.