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Title: Class D β-lactamases do exist in Gram-positive bacteria

Journal Article · · Nature Chemical Biology
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  1. Univ. of Notre Dame, IN (United States). Dept. of Chemistry and Biochemistry
  2. SLAC National Accelerator Lab., Menlo Park, CA (United States). Stanford Synchrotron Radiation Lightsource (SSRL)

Production of β-lactamases of one of four molecular classes (A, B, C and D) is the major mechanism of bacterial resistance to β-lactams, the largest class of antibiotics, which have saved countless lives since their inception 70 years ago. Although several hundred efficient class D enzymes have been identified in Gram-negative pathogens over the last four decades, none have been reported in Gram-positive bacteria. Here we demonstrate that efficient class D β-lactamases capable of hydrolyzing a wide array of β-lactam substrates are widely disseminated in various species of environmental Gram-positive organisms. Class D enzymes of Gram-positive bacteria have a distinct structural architecture and employ a unique substrate-binding mode that is quite different from that of all currently known class A, C and D β-lactamases. In conclusion, these enzymes thus constitute a previously unknown reservoir of novel antibiotic-resistance enzymes.

Research Organization:
SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES); USDOE Office of Science (SC), Biological and Environmental Research (BER); National Institutes of Health (NIH)
Grant/Contract Number:
AC02-76SF00515; P41GM103393
OSTI ID:
1257221
Journal Information:
Nature Chemical Biology, Vol. 12, Issue 1; ISSN 1552-4450
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 47 works
Citation information provided by
Web of Science

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Cited By (11)

13 C-Carbamylation as a mechanistic probe for the inhibition of class D β-lactamases by avibactam and halide ions journal January 2017
Asymmetric synthesis of δ-amino acid derivatives via diastereoselective vinylogous Mannich reactions between N-tert-butanesulfinyl imines and dioxinone-derived lithium dienolate journal January 2017
An active β‐lactamase is a part of an orchestrated cell wall stress resistance network of Bacillus subtilis and related rhizosphere species journal January 2019
Past and Present Perspectives on β-Lactamases journal July 2018
Therapeutic Efficacy of LN-1-255 in Combination with Imipenem in Severe Infection Caused by Carbapenem-Resistant Acinetobacter baumannii journal August 2019
Activity of the β-Lactamase Inhibitor LN-1-255 against Carbapenem-Hydrolyzing Class D β-Lactamases from Acinetobacter baumannii journal August 2017
Regulation and Anaerobic Function of the Clostridioides difficile β-Lactamase journal October 2019
Intrinsic Class D β-Lactamases of Clostridium difficile journal December 2018
Systematic Identification and Classification of β-Lactamases Based on Sequence Similarity Criteria: β-Lactamase Annotation journal January 2018
β-Lactamases and β-Lactamase Inhibitors in the 21st Century journal August 2019
An overview of the antimicrobial resistance mechanisms of bacteria journal January 2018