3DSS

3DSS superposes multiple three-dimensional protein structures and identifies invariant and common water molecules using Protein Data Bank (PDB) structural data.

Key Features:

• Protein Structure Superposition: Aligns and superposes two or more protein structures using PDB identifiers or uploaded atomic coordinates in PDB format.
• Invariant Water Molecule Detection: Identifies invariant and common water molecules present across superposed homologous protein structures.
• RASMOL Visualization Integration: Visualizes superposed protein structures and associated water molecules using the RASMOL molecular visualization program.
• Atomic Coordinate Export: Outputs superposed three-dimensional atomic coordinates for downstream structural analysis.
• Updated PDB Structural Data: Uses a locally maintained Protein Data Bank (PDB) anonymous FTP repository updated weekly for structural data retrieval.

Scientific Applications:

• Comparative Structural Analysis: Examines structural similarities and differences among homologous protein structures.
• Protein Hydration Studies: Investigates conserved water molecules and hydration patterns in protein structures.
• Structure-Based Drug Design: Identifies conserved structural features and hydration sites relevant to ligand binding and therapeutic targeting.
• Protein Evolution Analysis: Studies structural conservation among proteins to investigate evolutionary relationships.

Methodology:

3DSS aligns and superposes protein structures provided as PDB identifiers or PDB-format atomic coordinates, identifies invariant and common water molecules across the aligned structures, and visualizes results using RASMOL.