Cited by 239Antibiotic Resistance in BacteriaBacterial Identification and Susceptibility TestingEnzyme Production and Characterization

The ABCD’s of β-lactamase nomenclature

Bush, Karen·2013·Journal of Infection and Chemotherapy

Abstract

β-Lactamases can be named on the basis of molecular characteristics or functional properties. Molecular classes A, B, C, and D define an enzyme according to amino acid sequence and conserved motifs. Functional groups 1, 2, and 3 are used to assign a clinically useful description to a family of enzymes, with subgroups designated according to substrate and inhibitor profiles. In addition, other designations are used to define the functionality of specific subgroups, such as extended-spectrum β-lactamases, or ESBLs, and inhibitor-resistant TEM, or IRT, β-lactamases. None of these systems provides an unambiguous description of this versatile set of enzymes. A proposed classification system involving microbiological, molecular, and biochemical properties is described, based on the traditional classes A, B, C, and D and functional groups 1, 2, and 3 designations.

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Crossref · 10.1007/s10156-013-0640-7

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  • The Bush-Jacoby classification divides β-lactamases into 4 categories according to their biochemical function, mainly based on substrate specificity.

    “On the other hand, the Bush-Jacoby classification divides β-lactamases into 4 categories (each with several subgroups) according to their biochemical function, mainly based on substrate specificity (19, 20).”

    From Mechanisms of Antibiotic Resistance (2016) · cites this paper as [19]

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Authors
Bush, K.
Affiliations
Indiana University Bloomington (US)
Corresponding author
Bush, Karen
Venue
Journal of Infection and Chemotherapy
Publisher
Elsevier BV
Published
2013
Volume
19
Issue
4
Pages
549-559
ISSN
1341-321X (ISSN-L)
OpenAlex
W1970559386
Cited by
239
References
87
Citations by year
2026: 6 · 2025: 20 · 2024: 11 · 2023: 16 · 2022: 17 · 2021: 26 · 2020: 20 · 2019: 30 · 2018: 21 · 2017: 17 · 2016: 24 · 2015: 18 · 2014: 11 · 2013: 2
FWCI
1.17
Type
journal article
Language
en
Open access
closed
Locations
  • Journal of Infection and Chemotherapy (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Medicine › Antibiotic Resistance in Bacteria
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Clinical Biochemistry › Bacterial Identification and Susceptibility Testing
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Biotechnology › Enzyme Production and Characterization
Keywords
beta-lactamase, enzyme nomenclature, classification systems, functional groups, extended-spectrum beta-lactamase, substrate specificity, conserved motifs
MeSH terms
Bacteria, Bacterial Proteins, beta-Lactamases, Terminology as Topic

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