Antigen-antibody interaction databases | Immunology system data analysis

A derived knowledge base, archives molecular interactions of protein and peptide antigens characterized by co-crystal structures. The interactions are compiled at two levels, viz. residue level and atomic level. The interactions are characterized using AAIF (Antigen-Antibody Interaction Finder) developed in-house. AAIF enlists various non-covalent interactions such as van der Waals, salt bridges, hydrogen bonds and short contacts using distance and geometry-based criteria.

Reports a diverse set of antibody binding data with accompanying structures that can be used to evaluate methods for modeling antibody interactions. AB-Bind includes 1101 mutants with experimentally determined changes in binding free energies across 32 complexes. The database entries were manually curated and organized. It focuses on antibody binding affinity measurements with significant contribution of non-Ala mutations.