Evidence map›Paper›PMID 19645415›Full record

ArticleBiochemistry2009

Selection of peptides that target the aminoacyl-tRNA site of bacterial 16S ribosomal RNA.

Mei Li, Anne-Cécile E Duc, Edvin Klosi, Srividya Pattabiraman, Mark R Spaller, Christine S Chow

Abstract read
In one paragraph

Article in Biochemistry, 2009. 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
–field-weighted citation impact
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.

  1. Article
  2. Chemical science · 2017
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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

6 authors.

Mei LiDepartment of Chemistry, Wayne State University, Detroit, Michigan 48202, USA.
Anne-Cécile E Duc
Edvin Klosi
Srividya Pattabiraman
Mark R Spaller
Christine S Chow

Funding

Anti-infectives that target bacterial ribosomesU01AI061192 · NIAID · WAYNE STATE UNIVERSITY · PI CUNNINGHAM, PHILIP R · 2004 to 2007
$2.5M
NIAID NIH HHS AI061192NIAID NIH HHS U01 AI061192
6 · The paper itself

Abstract

For almost five decades, antibiotics have been used successfully to control infectious diseases caused by bacterial pathogens. More recently, however, two-thirds of bacterial pathogens exhibit resistance and are continually evolving new resistance mechanisms against almost every clinically used antibiotic. Novel efforts are required for the development of new drugs or drug leads to combat these infectious diseases. A number of antibiotics target the bacterial aminoacyl-tRNA site (A site) of 16S rRNA (rRNA). Mutations in the A-site region are known to cause antibiotic resistance. In this study, a bacterial (Escherichia coli) A-site rRNA model was chosen as a target to screen for peptide binders. Two heptapeptides, HPVHHYQ and LPLTPLP, were selected through M13 phage display. Both peptides display selective binding to the A-site 16S rRNA with on-bead fluorescence assays. Dissociation constants (Kd's) of the amidated peptide HPVHHYQ-NH2 to various A-site RNA constructs were determined by using enzymatic footprinting, electrospray ionization mass spectrometry (ESI-MS), and isothermal titration calorimetry (ITC) under a variety of buffer and solution conditions. HPVHHYQ-NH2 exhibits moderate affinity for the A-site RNA, with an average Kd value of 16 microM. In addition, enzymatic footprinting assays and competition ESI-MS with a known A-site binder (paromomycin) revealed that peptide binding occurs near the asymmetric bulge at positions U1495 and G1494 and leads to increased exposure of residues A1492 and A1493.

Indexed as

Anti-Bacterial AgentsDrug Resistance, MicrobialModels, MolecularNucleic Acid ConformationParomomycinPeptidesProtein BindingRNA, BacterialRNA, Ribosomal, 16SRNA, Transfer, Amino AcylStatic ElectricityStructure-Activity RelationshipSubstrate SpecificityAnti-Bacterial AgentsParomomycinPeptidesRNA, BacterialRNA, Ribosomal, 16SRNA, Transfer, Amino Acyl

Identifiers

PMID19645415
PMCPMC2752669

What OpenQuestion holds

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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.