Evidence map›Paper›PMID 22183167›Full record

ArticleAntimicrobial agents and chemotherapy2012

Pyrrolamide DNA gyrase inhibitors: fragment-based nuclear magnetic resonance screening to identify antibacterial agents.

Ann E Eakin, Oluyinka Green, Neil Hales, Grant K Walkup, Shanta Bist, Alok Singh, George Mullen, Joanna Bryant, Kevin Embrey, Ning Gao and 15 more

Abstract read
In one paragraph

Article in Antimicrobial agents and chemotherapy, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 37 papers.

0numbers the graph read from it
0cells of the map it votes in
37citing papers in PubMed
4.4field-weighted citation impact, top 5% 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

37 citing papers in PubMed, 134 citations in OpenAlex.

  1. Article
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  14. Review
  15. Article
  16. Recent Development of DNA Gyrase Inhibitors: An Update.Mini reviews in medicinal chemistry · 2024
    Review
  17. Review
  18. Thiosemicarbazide Derivatives Decrease the ATPase Activity ofInternational journal of molecular sciences · 2021
    Article
  19. Article
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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

25 authors at 1 institution in 1 country.

Ann E EakinInfection Innovative Medicines Unit, AstraZeneca R&D Boston, Waltham, Massachusetts, USA. Ann.Eakin@astrazeneca.com
Oluyinka Green
Neil Hales
Grant K Walkup
Shanta Bist
Alok Singh
George Mullen
Joanna Bryant
Kevin Embrey
Ning Gao
Alex Breeze
Dave Timms
Beth Andrews
Maria Uria-Nickelsen
Julie Demeritt
James T Loch
Ken Hull
April Blodgett
Ruth N Illingworth
Bryan Prince
P Ann Boriack-Sjodin
Sheila Hauck
Lawrence J MacPherson
Haihong Ni
Brian Sherer
AstraZeneca (United States) · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

DNA gyrase is an essential enzyme in bacteria, and its inhibition results in the disruption of DNA synthesis and, subsequently, cell death. The pyrrolamides are a novel class of antibacterial agents targeting DNA gyrase. These compounds were identified by a fragment-based lead generation (FBLG) approach using nuclear magnetic resonance (NMR) screening to identify low-molecular-weight compounds that bind to the ATP pocket of DNA gyrase. A pyrrole hit with a binding constant of 1 mM formed the basis of the design and synthesis of a focused library of compounds that resulted in the rapid identification of a lead compound that inhibited DNA gyrase with a 50% inhibitory concentration (IC(50)) of 3 μM. The potency of the lead compound was further optimized by utilizing iterative X-ray crystallography to yield DNA gyrase inhibitors that also displayed antibacterial activity. Spontaneous mutants were isolated in Staphylococcus aureus by plating on agar plates containing pyrrolamide 4 at the MIC. The resistant variants displayed 4- to 8-fold-increased MIC values relative to the parent strain. DNA sequencing revealed two independent point mutations in the pyrrolamide binding region of the gyrB genes from these variants, supporting the hypothesis that the mode of action of these compounds was inhibition of DNA gyrase. Efficacy of a representative pyrrolamide was demonstrated against Streptococcus pneumoniae in a mouse lung infection model. These data demonstrate that the pyrrolamides are a novel class of DNA gyrase inhibitors with the potential to deliver future antibacterial agents targeting multiple clinical indications.

Indexed as

Topoisomerase II InhibitorsAmidesAnimalsAnti-Bacterial AgentsBinding SitesCrystallography, X-RayDNA GyraseDrug Resistance, BacterialEnzyme InhibitorsHumansInhibitory Concentration 50Magnetic Resonance SpectroscopyMiceMicrobial Sensitivity TestsModels, MolecularMutationAmidesAnti-Bacterial AgentsDNA GyraseEnzyme InhibitorsPyrrolesTopoisomerase II Inhibitors

Identifiers

PMID22183167
PMCPMC3294908
OpenAlexW2049245087

What OpenQuestion holds

Textmetadata
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.