pyDockSAXS

pyDockSAXS integrates small-angle X-ray scattering (SAXS) data with rigid-body docking and energy-based scoring to generate and evaluate structural models of protein–protein complexes.

Key Features:

• Integration of SAXS Data: Combines experimental SAXS curves with computational modeling to constrain and evaluate models of protein–protein complexes.
• Rigid-Body Docking Models: Generates rigid-body docking models using FTDOCK.
• Energy-Based Scoring Function: Evaluates docking models using the pyDock energy-based scoring function.
• Automated Pipeline for Model Generation and Evaluation: Executes an automated workflow that accepts structural models and a SAXS curve to generate and rank multiple docking models.
• Customizable Input Options: Accepts previously computed docking poses and applies filters such as potential interface residues and symmetry restraints.

Scientific Applications:

• Understanding Biological Processes: Elucidates molecular arrangements of protein–protein interactions to support interpretation of biological pathways.
• Identifying Therapeutic Targets: Characterizes interaction interfaces to aid identification of potential therapeutic targets.
• Facilitating Drug Discovery: Provides structural models that can inform design of molecules targeting protein–protein interactions.

Methodology:

FTDOCK is used to generate rigid-body docking models; the pyDock energy-based scoring function assesses model energetics; models are compared to experimental SAXS curves; optional input of precomputed docking poses and filters (interface residues, symmetry restraints) can be applied.