COMMA

COMMA maps residue-level communication networks within proteins by analyzing dynamic properties from all-atom molecular dynamics simulations to identify communication blocks and communicating segment pairs relevant to allosteric regulation and mutation effects.

Key Features:

• Residue-Based Dynamic Properties: Extracts residue-level dynamic properties from all-atom molecular dynamics simulations.
• Graph Theoretic Framework Integration: Integrates extracted residue dynamics into a graph theoretic framework to identify and characterize groups of residues mediating short- and long-range communication.
• Identification of Communication Blocks and Communicating Segment Pairs: Defines "communication blocks" and "communicating segment pairs" to distinguish roles of protein regions and quantify communication strengths.

Scientific Applications:

• Comparative Analysis: Compares dynamical behaviors of different proteins or of the same protein under varying conditions.
• Allosteric Regulation Identification: Pinpoints residues and regions implicated in allosteric signal transmission.
• Mechanistic Insights into Mutations: Provides mechanistic explanations for the effects of deleterious mutations on protein dynamics.
• Application to Archetypal Proteins: Has been applied to protein A, tyrosine kinase KIT, and tumor suppressor p53 to illustrate its analytical use.

Methodology:

Extract residue-level dynamic properties from all-atom molecular dynamics simulations, integrate these data into a graph theoretic framework, and identify communication blocks and communicating segment pairs to evaluate connections and communication strengths.