CBMAR: a comprehensive β-lactamase molecular annotation resource.

Area of Science:

• Microbiology
• Biochemistry
• Bioinformatics

Background:

• β-Lactam antibiotics are crucial for treating bacterial infections.
• Bacterial β-lactamases are a primary mechanism of resistance, hydrolyzing these antibiotics.
• Evolution of β-lactamases, driven by new antibiotic generations, necessitates advanced characterization tools.

Purpose of the Study:

• To introduce CBMAR, a comprehensive database for molecular annotation and discovery of β-lactamases.
• To provide detailed molecular and biochemical characterization data for each β-lactamase family.
• To support research on antibiotic resistance and the evolution of β-lactamase enzymes.

Main Methods:

• Database architecture based on Ambler classification (serine and metallo-β-lactamases).
• Annotation of each family with sequence variability, resistance profiles, inhibitor susceptibility, active sites, fingerprints, mutational profiles, variants, gene location, and phylogenetic trees.
• Integration of external links to sequence and structure databases, and implementation of BLAST for sequence similarity searches.

Main Results:

• CBMAR offers a broader scope than existing databases for β-lactamase characterization.
• The database facilitates the assignment of novel β-lactamase proteins to their respective families using specific fingerprints.
• Comprehensive annotations enable detailed molecular and biochemical analysis of β-lactamase families.

Conclusions:

• CBMAR is a valuable resource for researchers studying β-lactamase evolution and antibiotic resistance.
• The database aids in the discovery and characterization of novel β-lactamases.
• CBMAR supports the development of strategies to combat bacterial resistance to β-lactam antibiotics.