2StrucCompare

2StrucCompare compares protein structures at secondary structure and residue levels to identify conformational differences between related protein structures.

Key Features:

• Multi-Method Secondary Structure Assignment: Analyzes protein structures using DSSP (Define Secondary Structure of Proteins), STRIDE, P-SEA, and STICKS secondary structure assignment algorithms.
• Residue-Level Structural Comparison: Detects differences in secondary structure assignments and paired residues between compared protein chains.
• Contact and Side Chain Conformation Analysis: Identifies variations in residue contacts and side chain conformations between protein structures.
• Detection of Subtle Structural Variations: Captures conformational differences across multiple secondary structure assignment methods to reveal structural variations between related proteins.

Scientific Applications:

• Protein Structure–Function Analysis: Supports investigation of how structural differences influence protein function and interactions.
• Comparative Structural Biology: Enables comparison of homologous proteins to analyze structural divergence and conserved features.
• Structure-Based Drug Research: Assists identification of structural variations in binding regions or active sites relevant to drug design.

Methodology:

The tool compares protein structures by assigning secondary structures using DSSP, STRIDE, P-SEA, and STICKS algorithms and evaluating residue-level structural features, contacts, and side chain conformations across the compared structures.