Evidence map›Paper›PMID 29236332›Full record

ArticleAngewandte Chemie (International ed. in English)2018

A New Mechanism for β-Lactamases: Class D Enzymes Degrade 1β-Methyl Carbapenems through Lactone Formation.

Christopher T Lohans, Emma van Groesen, Kiran Kumar, Catherine L Tooke, James Spencer, Robert S Paton, Jürgen Brem, Christopher J Schofield

Open access · hybridAbstract read
In one paragraph

Article in Angewandte Chemie (International ed. in English), 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed
0.9field-weighted citation impact, top 30% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

20 citing papers in PubMed, 35 citations in OpenAlex.

  1. Article
  2. Review
  3. β-Lactams from the Ocean.Marine drugs · 2023
    Review
  4. Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. Review
  10. Article
  11. Competing off-loading mechanisms of meropenem from an l,d-transpeptidase reduce antibiotic effectiveness.Proceedings of the National Academy of Sciences of the United States of America · 2021
    Article
  12. Review
  13. Article
  14. Article
  15. Article
  16. Article
  17. Chemistry (Weinheim an der Bergstrasse, Germany) · 2019
    Article
  18. Review
  19. Article
  20. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

8 authors at 2 institutions in 1 country.

Christopher T LohansDepartment of Chemistry, University of Oxford, Oxford, OX1 3TA, UK.ORCID 0000-0003-1094-0349
Emma van GroesenDepartment of Chemistry, University of Oxford, Oxford, OX1 3TA, UK.
Kiran KumarDepartment of Chemistry, University of Oxford, Oxford, OX1 3TA, UK.ORCID 0000-0002-5615-6237
Catherine L TookeSchool of Cellular and Molecular Medicine, University of Bristol, Bristol, BS8 1TD, UK.ORCID 0000-0003-2180-3235
James SpencerSchool of Cellular and Molecular Medicine, University of Bristol, Bristol, BS8 1TD, UK.
Robert S PatonDepartment of Chemistry, University of Oxford, Oxford, OX1 3TA, UK.
Jürgen BremDepartment of Chemistry, University of Oxford, Oxford, OX1 3TA, UK.ORCID 0000-0002-0137-3226
Christopher J SchofieldDepartment of Chemistry, University of Oxford, Oxford, OX1 3TA, UK.ORCID 0000-0002-0290-6565
University of Oxford · GBUniversity of Bristol · GB

Funding

Medical Research Council G1100135Medical Research Council MC_PC_14103Medical Research Council MC_PC_16092Medical Research Council MR/L007665/1Medical Research Council MR/N002679/1Medical Research Council MR/P007503/1Wellcome Trust
6 · The paper itself

Abstract

β-Lactamases threaten the clinical use of carbapenems, which are considered antibiotics of last resort. The classical mechanism of serine carbapenemase catalysis proceeds through hydrolysis of an acyl-enzyme intermediate. We show that class D β-lactamases also degrade clinically used 1β-methyl-substituted carbapenems through the unprecedented formation of a carbapenem-derived β-lactone. β-Lactone formation results from nucleophilic attack of the carbapenem hydroxyethyl side chain on the ester carbonyl of the acyl-enzyme intermediate. The carbapenem-derived lactone products inhibit both serine β-lactamases (particularly class D) and metallo-β-lactamases. These results define a new mechanism for the class D carbapenemases, in which a hydrolytic water molecule is not required.

Indexed as

antibioticscarbapenemshydrolaseslactonesβ-lactamases

Identifiers

PMID29236332
PMCPMC5817396
OpenAlexW2773311435

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.