Evidence map›Paper›PMID 22365611›Full record

ArticleChemistry & biology2012

In vivo characterization of nonribosomal peptide synthetases NocA and NocB in the biosynthesis of nocardicin A.

Jeanne M Davidsen, Craig A Townsend

Abstract read
In one paragraph

Article in Chemistry & biology, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed
3.0field-weighted citation impact, top 10% 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

13 citing papers in PubMed, 29 citations in OpenAlex.

  1. Review
  2. Review
  3. Structural Studies of Modular Nonribosomal Peptide Synthetases.Methods in molecular biology (Clifton, N.J.) · 2023
    Article
  4. Article
  5. Article
  6. Bioactive molecules from Nocardia: diversity, bioactivities and biosynthesis.Journal of industrial microbiology & biotechnology · 2019
    Review
  7. Article
  8. Review
  9. Convergent biosynthetic pathways to β-lactam antibiotics.Current opinion in chemical biology · 2016
    Review
  10. Article
  11. Article
  12. Article
  13. 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.

Jeanne M DavidsenDepartment of Chemistry, Johns Hopkins University, Baltimore, MD 21218, USA.
Craig A Townsend
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

Two nonribosomal peptide synthetases (NRPS), NocA and NocB, together comprising five modules, are essential for the biosynthesis of the D,L,D configured tripeptide backbone of the monocyclic β-lactam nocardicin A. We report a double replacement gene strategy in which point mutations were engineered in the two encoding NRPS genes without disruption of the nocABC operon by placing selective markers in adjacent genes. A series of mutants was constructed to inactivate the thiolation (T) domain of each module and to evaluate an HHxxxDR catalytic motif in NocA and an atypical extended histidine motif in NocB. The loss of nocardicin A production in each of the T domain mutants indicates that all five modules are essential for its biosynthesis. Conversely, production of nocardicin A was not affected by mutation of the NocB histidine motif or the R828G mutation in NocA.

Indexed as

Amino Acid MotifsAmino Acid SequenceBacterial ProteinsBiocatalysisLactamsMolecular Sequence DataMultigene FamilyNocardiaPeptide SynthasesPoint MutationBacterial ProteinsLactamsnocardicinPeptide Synthases

Identifiers

PMID22365611
PMCPMC3292777
OpenAlexW2078687596

What OpenQuestion holds

Textmetadata
LicenceTDM
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.