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A Standard Numbering Scheme for Class C β-Lactamases
Andrew R Mack1,2, Melissa D Barnes3,2, Magdalena A Taracila3,2
1Department of Molecular Biology and Microbiology, Case Western Reserve University, Cleveland, Ohio, USA.
Antimicrobial Agents and Chemotherapy
|November 13, 2019
Summary
A standardized numbering scheme for AmpC beta-lactamases is proposed, addressing communication challenges in the field. This collaborative scheme considers sequence and structure, preserving key residue numbering for broader applications.
Area of Science:
- Biochemistry
- Structural Biology
- Microbiology
Background:
- Class C (AmpC) beta-lactamases lack a standardized amino acid numbering scheme, unlike Classes A and B.
- This absence complicates scientific communication and research collaboration in the field of antibiotic resistance.
Purpose of the Study:
- To propose a standardized amino acid numbering scheme for AmpC beta-lactamases.
- To facilitate clearer communication and enhance research in beta-lactamase studies.
Main Methods:
- A collaborative approach integrating sequence and structural information was employed.
- The scheme was designed to preserve the traditional numbering of key catalytic residues.
Main Results:
- A novel, adaptable numbering scheme for AmpC beta-lactamases has been developed.
- The scheme maintains consistent numbering for important residues like Ser64, Lys67, Tyr150, and Lys315.
- A variation for genetic and epidemiological applications is included.
Conclusions:
- The proposed numbering scheme standardizes AmpC beta-lactamase nomenclature.
- This standardization will improve communication, research efficiency, and the study of antibiotic resistance mechanisms.
