Superpose3D

Superpose3D performs local structural comparisons of protein structures to identify residue sets or atom groups with similar three-dimensional positions in functional regions such as enzyme active sites and ligand binding sites.

Key Features:

• User-defined structure representations: Enables definition of custom structural representations to highlight residue characteristics relevant for functional-site comparisons.
• Flexible syntax for customization: Provides a flexible syntax to process input proteins according to directives that select residue sets or atom groups for comparison.
• General-purpose utility: Applies multiple representations across diverse test cases to accommodate different types of structural analyses.
• Interpretation of database screening results: Facilitates interpretation of screenings where known structural motifs are compared against large ensembles of structures.

Scientific Applications:

• Functional site comparison: Enables precise local comparisons of enzyme active sites and ligand binding sites to detect structural similarity.
• Protein function and interaction inference: Identifies structural similarities relevant to protein function and molecular interactions.
• Evolutionary relationship analysis: Assists in detecting structural similarities informative of evolutionary relationships.
• Drug design and ligand binding analysis: Supports analysis of ligand binding sites to inform therapeutic development.

Methodology:

Processes input proteins according to user-defined structural representations and directives to identify residue sets or atom groups that exhibit similar three-dimensional positions across structures, and supports comparisons of known structural motifs against large structural ensembles in database screenings.