Evidence map›Paper›PMID 15845494›Full record

ArticleInfection and immunity2005

Effects of oligopeptide permease in group a streptococcal infection.

Chih-Hung Wang, Chia-Yu Lin, Yueh-Hsia Luo, Pei-Jane Tsai, Yee-Shin Lin, Ming T Lin, Woei-Jer Chuang, Ching-Chuan Liu, Jiunn-Jong Wu

Open access · greenAbstract read
In one paragraph

Article in Infection and immunity, 2005. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 27 papers.

0numbers the graph read from it
0cells of the map it votes in
27citing papers in PubMed
2.7field-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

27 citing papers in PubMed, 49 citations in OpenAlex.

  1. Article
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  5. Article
  6. Oligopeptide-binding protein from nontypeableThe Journal of biological chemistry · 2019
    Article
  7. Review
  8. Article
  9. Article
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  11. Article
  12. Article
  13. Review
  14. Article
  15. Quorum sensing in group A Streptococcus.Frontiers in cellular and infection microbiology · 2014
    Review
  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

9 authors at 5 institutions in 3 countries.

Chih-Hung WangDepartment of Medical Laboratory Science and Biotechnology, College of Medicine, National Cheng-Kung University, No. 1 University Rd., Tainan, Taiwan.
Chia-Yu Lin
Yueh-Hsia Luo
Pei-Jane Tsai
Yee-Shin Lin
Ming T Lin
Woei-Jer Chuang
Ching-Chuan Liu
Jiunn-Jong Wu
Institute of Basic Medical Sciences of the Chinese Academy of Medical SciencesInstitute of Physiology and Basic Medicine · RUNational Cheng Kung University · TWPediatrics and Genetics · USTzu Chi University · TW

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The oligopeptide permease (Opp) of group A streptococci (GAS) is a membrane-associated protein and belongs to the ATP-binding cassette transporter family. It is encoded by a polycistronic operon containing oppA, oppB, oppC, oppD, and oppF. The biological function of these genes in GAS is poorly understood. In order to understand more about the effects of Opp on GAS virulence factors, an oppA isogenic mutant was constructed by using an integrative plasmid to disrupt the opp operon and confirmed by Southern blot hybridization. No transcript was detected in the oppA isogenic mutant by Northern blot analysis and reverse transcriptase PCR. The growth curve for the oppA isogenic mutant was similar to that for wild-type strain A-20. The oppA isogenic mutant not only decreased the transcription of speB, speX, and rofA but also increased the transcription of speF, sagA (streptolysin S-associated gene A), slo (streptolysin O), pel (pleotrophic effect locus), and dppA (dipeptide permease). No effects on the transcription of emm, sda, speJ, speG, rgg, and csrR were found. The phenotypes of the oppA mutant were restored by the oppA revertant and by the complementation strain. The oppA mutant caused less mortality and tissue damage than the wild-type strain when inoculated into BALB/c mice via an air pouch. Based on these data, we suggest that the opp operon plays an important role in the pathogenesis of GAS infection.

Indexed as

Gene Expression Regulation, BacterialOperonAnimalsBacterial ProteinsHumansMembrane Transport ProteinsMiceMice, Inbred BALB CMutationStreptococcal InfectionsStreptococcus pyogenesVirulenceBacterial ProteinsMembrane Transport Proteinsoligopeptide permease, Bacteria

Identifiers

PMID15845494
PMCPMC1087318
OpenAlexW2168630936

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.