BIPA

BIPA catalogs and annotates protein-nucleic acid interface features in experimentally determined three-dimensional structures to support analysis of binding specificity and molecular determinants of interaction.

Key Features:

• Physicochemical Attributes: Provides data on interface size, shape, residue propensity, secondary structure composition, and intermolecular interactions for protein–nucleic acid complexes.
• Structural Alignments: Includes multiple structural alignments of nucleic acid-binding protein families to reveal conserved structural elements across proteins.
• Local Environment Annotations: Supplies position-specific annotations within protein families describing local environments relevant to the impact of mutations on binding affinity and specificity.

Scientific Applications:

• Structural Biology: Analysis of three-dimensional architecture and interface geometry of protein–nucleic acid complexes.
• Molecular Evolution: Examination of evolutionary conservation and divergence among nucleic acid-binding proteins using structural and residue-level features.
• Protein Engineering: Informing mutational analysis and design of engineered proteins to alter nucleic acid binding properties.
• Drug Discovery: Identification and characterization of critical interaction sites in protein–nucleic acid interfaces as potential therapeutic targets.

Methodology:

Compiles data from experimentally determined 3D structures of protein–nucleic acid complexes and integrates structural alignments with physicochemical analyses.