Evidence map›Paper›PMID 24717845›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2014

Molecular recognition and modification of the 30S ribosome by the aminoglycoside-resistance methyltransferase NpmA.

Jack A Dunkle, Kellie Vinal, Pooja M Desai, Natalia Zelinskaya, Miloje Savic, Dayne M West, Graeme L Conn, Christine M Dunham

Open access · bronzeAbstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 43 papers.

0numbers the graph read from it
0cells of the map it votes in
43citing papers in PubMed
3.4field-weighted citation impact, top 7% 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

43 citing papers in PubMed, 60 citations in OpenAlex.

  1. Mechanism of 30S subunit recognition and modification by the conserved bacterial ribosomal RNA methyltransferase RsmI.Proceedings of the National Academy of Sciences of the United States of America · 2026
    Article
  2. Article
  3. Mechanistic insights into 50Science advances · 2025
    Article
  4. Article
  5. Article
  6. Article
  7. Transcriptional regulatory factorFrontiers in microbiology · 2025
    Article
  8. 30S subunit recognition and G1405 modification by the aminoglycoside-resistance 16S ribosomal RNA methyltransferase RmtC.Proceedings of the National Academy of Sciences of the United States of America · 2023
    Article
  9. Article
  10. Ribosome-targeting antibiotics and resistanceRSC medicinal chemistry · 2023
    Review
  11. Review
  12. Review
  13. 50S subunit recognition and modification by theProceedings of the National Academy of Sciences of the United States of America · 2022
    Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Antibiotics (Basel, Switzerland) · 2021
    Review
  19. Article
  20. Review
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 1 institution in 1 country.

Jack A DunkleDepartment of Biochemistry, Emory University School of Medicine, Atlanta, GA 30322.
Kellie Vinal
Pooja M Desai
Natalia Zelinskaya
Miloje Savic
Dayne M West
Graeme L Conn
Christine M Dunham
Emory University · US

Funding

Y-FAMILY POLYMERASES AND CO-FACTORS IN TRANSLESION REPLICATIONP41RR015301 · NCRR · CORNELL UNIVERSITY ITHACA · PI EISENBERG, DAVID · 2001 to 2011
$28.2M
RNA modification and antibiotic resistanceR01AI088025 · NIAID · EMORY UNIVERSITY · PI Graeme L Conn, Christine M Dunham · 2010 to 2026
$7.9M
Structural Studies of Ribosome RegulationR01GM093278 · NIGMS · EMORY UNIVERSITY · PI DUNHAM, CHRISTINE M · 2010 to 2022
$4.6M
Connecting plasma membrane function to lipid structure and organization with asymR01GM093279 · NIGMS · UNIVERSITY OF SOUTHERN CALIFORNIA · PI MALMSTADT, NOAH · 2010 to 2014
$1.4M
NCRR NIH HHS P41 RR015301NCRR NIH HHS RR-15301NIAID NIH HHS R01 AI088025NIAID NIH HHS R01-AI088025NIGMS NIH HHS R01 GM093278NIGMS NIH HHS R01 GM093279NIGMS NIH HHS R01-GM093279
6 · The paper itself

Abstract

Aminoglycosides are potent, broad spectrum, ribosome-targeting antibacterials whose clinical efficacy is seriously threatened by multiple resistance mechanisms. Here, we report the structural basis for 30S recognition by the novel plasmid-mediated aminoglycoside-resistance rRNA methyltransferase A (NpmA). These studies are supported by biochemical and functional assays that define the molecular features necessary for NpmA to catalyze m(1)A1408 modification and confer resistance. The requirement for the mature 30S as a substrate for NpmA is clearly explained by its recognition of four disparate 16S rRNA helices brought into proximity by 30S assembly. Our structure captures a "precatalytic state" in which multiple structural reorganizations orient functionally critical residues to flip A1408 from helix 44 and position it precisely in a remodeled active site for methylation. Our findings provide a new molecular framework for the activity of aminoglycoside-resistance rRNA methyltransferases that may serve as a functional paradigm for other modification enzymes acting late in 30S biogenesis.

Indexed as

Models, MolecularAdenosineAmino AcidsAminoglycosidesBiocatalysisCatalytic DomainConserved SequenceCrystallography, X-RayDrug Resistance, BacterialEscherichia coliEscherichia coli ProteinsGene Transfer, HorizontalMethylationMethyltransferasesNucleotidesProtein Structure, SecondaryAdenosineAmino AcidsAminoglycosidesEscherichia coli ProteinsMethyltransferasesNpmA protein, E coliNucleotidesRNA, Ribosomal, 16Ssinefunginantibiotic resistancebase flippingRNA modification

Identifiers

PMID24717845
PMCPMC4035980
OpenAlexW1965842837

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.