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Classification for β-lactamases: historical perspectives.

Karen Bush1

  • 1Professor of Practice Emerita, Indiana University, Bloomington, IN, USA.

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Summary
This summary is machine-generated.

Beta-lactamase nomenclature is evolving due to enzyme diversity. Current systems incorporate functional and structural features, with the NCBI overseeing naming conventions for these antibiotic resistance enzymes.

Keywords:
Antibioticsfunctionnomenclatureresistancestructureβ-lactamase

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Area of Science:

  • Enzymology
  • Microbiology
  • Biochemistry

Background:

  • Beta-lactamases are key enzymes in antibiotic resistance.
  • Historical classification relied on functional names (penicillinase, cephalosporinase) or structural classes (A, B).
  • Increasing enzyme diversity necessitates advanced nomenclature.

Purpose of the Study:

  • To review the evolution of beta-lactamase nomenclature.
  • To highlight the shift from functional to integrated functional and structural classification systems.
  • To establish the current authority for beta-lactamase naming.

Main Methods:

  • Review of historical enzyme designations.
  • Analysis of classification schemes based on biochemical properties and amino acid sequences.
  • Medline search to identify current nomenclature trends.
  • Identification of the National Center for Biotechnology Information (NCBI) as the governing body.

Main Results:

  • Early beta-lactamases were named functionally.
  • Classification expanded to structural groups (serine-based: A, C, D; metallo-beta-lactamases: B).
  • Modern classification integrates function and structure, with NCBI oversight.

Conclusions:

  • Beta-lactamase nomenclature requires continuous evolution.
  • New enzyme discoveries and functionalities will drive future naming conventions.
  • Standardized nomenclature is crucial for research and clinical applications in antibiotic resistance.