Evidence map›Paper›PMID 24531841›Full record

ArticleNature chemical biology2014

Epimerization and substrate gating by a TE domain in β-lactam antibiotic biosynthesis.

Nicole M Gaudelli, Craig A Townsend

Open access · greenAbstract read
In one paragraph

Article in Nature chemical biology, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 28 papers.

0numbers the graph read from it
0cells of the map it votes in
28citing papers in PubMed
6.3field-weighted citation impact, top 3% 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

28 citing papers in PubMed, 63 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Review
  5. Review
  6. Article
  7. Review
  8. Structural Studies of Modular Nonribosomal Peptide Synthetases.Methods in molecular biology (Clifton, N.J.) · 2023
    Article
  9. Review
  10. Article
  11. Article
  12. Article
  13. Article
  14. CariogenicACS infectious diseases · 2020
    Article
  15. Article
  16. Article
  17. Article
  18. Article
  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

2 authors at 1 institution in 1 country.

Nicole M GaudelliDepartment of Chemistry, Johns Hopkins University, Baltimore, Maryland, USA.
Craig A TownsendDepartment of Chemistry, Johns Hopkins University, Baltimore, Maryland, USA.
Johns Hopkins University · US

Funding

Biosynthesis of Beta-Lactam AntibioticsR37AI014937 · NIAID · JOHNS HOPKINS UNIVERSITY · PI TOWNSEND, CRAIG ARTHUR · 2004 to 2013
$5.2M
B LACTAM AND AMINO ACID DERIVED ANTIBIOTIC BIOSYNTHESISR01AI014937 · NIAID · JOHNS HOPKINS UNIVERSITY · PI TOWNSEND, CRAIG A · 1985 to 2003
$1.5M
Biosynthesis of Beta-Lactam AntibioticsR56AI014937 · NIAID · JOHNS HOPKINS UNIVERSITY · PI TOWNSEND, CRAIG ARTHUR · 2014 to 2014
$383k
NIAID NIH HHS AI014937NIAID NIH HHS R01 AI014937NIAID NIH HHS R37 AI014937NIAID NIH HHS R56 AI014937
6 · The paper itself

Abstract

Nonribosomal peptide synthetases are versatile engines of bioactive natural product biosynthesis that function according to the multiple carrier thiotemplate mechanism. C-terminal thioesterase (TE) domains of these giant modular proteins typically catalyze product release by hydrolysis or macrocyclization. We now report an unprecedented, dual-function TE that is involved in the biosynthesis of nocardicin A, which is the paradigm monocyclic β-lactam antibiotic. Contrary to our expectation, a stereodefined series of potential peptide substrates for the nocardicin TE domain failed to undergo hydrolysis. The stringent discrimination against peptide intermediates was overcome by prior monocyclic β-lactam formation at an L-seryl site. Kinetic data are interpreted such that the TE domain acts as a gatekeeper to hold the assembling peptide on an upstream domain until β-lactam formation takes place and then rapidly catalyzes epimerization, which has not been observed previously as a TE catalytic function, and thioesterase cleavage to discharge a fully fledged pentapeptide β-lactam harboring nocardicin G, the universal precursor of the nocardicins.

Indexed as

AcetylationAnti-Bacterial Agentsbeta-LactamsChromatography, High Pressure LiquidCloning, MolecularCoenzyme ACyclizationDNAGenetic VectorsHydrolysisKineticsLactamsMagnetic Resonance SpectroscopyMultigene FamilyPenicillinsPeptide BiosynthesisAnti-Bacterial Agentsbeta-LactamsCoenzyme ADNALactamsnocardicinPenicillinsThiolester Hydrolases

Identifiers

PMID24531841
PMCPMC3961552
OpenAlexW1992428015

What OpenQuestion holds

Textmetadata
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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.