Evidence map›Paper›PMID 15150242›Full record

ArticleJournal of bacteriology2004

Evidence for an arginine exporter encoded by yggA (argO) that is regulated by the LysR-type transcriptional regulator ArgP in Escherichia coli.

Madhusudan R Nandineni, J Gowrishankar

Abstract read
In one paragraph

Article in Journal of bacteriology, 2004. 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
–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

43 citing papers in PubMed.

  1. An extragenic fix for a broken enzyme.Microbiology (Reading, England) · 2026
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  3. Review
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  7. Review
  8. Review
  9. l-Alanine Exporter AlaE Functions as One of the d-Alanine Exporters inInternational journal of molecular sciences · 2023
    Article
  10. Article
  11. Analysis of a Library ofAntibiotics (Basel, Switzerland) · 2022
    Article
  12. Review
  13. Article
  14. Article
  15. Article
  16. L-Alanine Exporter, AlaE, ofInternational journal of molecular sciences · 2019
    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

2 authors.

Madhusudan R NandineniCentre for Cellular and Molecular Biology, Hyderabad 500007, India.
J Gowrishankar

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The anonymous open reading frame yggA of Escherichia coli was identified in this study as a gene that is under the transcriptional control of argP (previously called iciA), which encodes a LysR-type transcriptional regulator protein. Strains with null mutations in either yggA or argP were supersensitive to the arginine analog canavanine, and yggA-lac expression in vivo exhibited argP(+)-dependent induction by arginine. Lysine supplementation phenocopied the argP null mutation in that it virtually abolished yggA expression, even in the argP+ strain. The dipeptides arginylalanine and lysylalanine behaved much like arginine and lysine, respectively, to induce and to turn off yggA transcription. Dominant missense mutations in argP (argPd) that conferred canavanine resistance and rendered yggA-lac expression constitutive were obtained. The protein deduced to be encoded by yggA shares similarity with a basic amino acid exporter (LysE) of Corynebacterium glutamicum, and we obtained evidence for increased arginine efflux from E. coli strains with either the argPd mutation or multicopy yggA+. The null yggA mutation abolished the increased arginine efflux from the argPd strain. Our results suggest that yggA encodes an ArgP-regulated arginine exporter, and we have accordingly renamed it argO (for "arginine outward transport"). We propose that the physiological function of argO may be either to prevent the accumulation to toxic levels of canavanine (which is a plant-derived antimetabolite) or arginine or to maintain an appropriate balance between the intracellular lysine and arginine concentrations.

Indexed as

Gene Expression Regulation, BacterialOpen Reading FramesArginineBiological TransportCanavanineDNA-Binding ProteinsEscherichia coliEscherichia coli ProteinsTranscription, GeneticArginineargP protein, E coliCanavanineDNA-Binding ProteinsEscherichia coli Proteins

Identifiers

PMID15150242
PMCPMC415761

What OpenQuestion holds

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Registered trials

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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.