Evidence map›Paper›PMID 19854905›Full record

ArticleJournal of bacteriology2010

Conservation of structure and protein-protein interactions mediated by the secreted mycobacterial proteins EsxA, EsxB, and EspA.

Brian Callahan, Kiet Nguyen, Alissa Collins, Kayla Valdes, Michael Caplow, David K Crossman, Adrie J C Steyn, Leslie Eisele, Keith M Derbyshire

Open access · greenAbstract read
In one paragraph

Article in Journal of bacteriology, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed
1.1field-weighted citation impact, top 23% 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

16 citing papers in PubMed, 29 citations in OpenAlex.

  1. Protein-Mediated Virulence in Mycobacterium tuberculosis.Advances in experimental medicine and biology · 2026
    Review
  2. Article
  3. Proteo-genetic analysis reveals clear hierarchy of ESX-1 secretion inProceedings of the National Academy of Sciences of the United States of America · 2022
    Article
  4. Article
  5. The Type VII Secretion System ofAnnual review of microbiology · 2021
    Article
  6. Article
  7. T CELL EPITOPES OF THEAfrican journal of infectious diseases · 2018
    Article
  8. Article
  9. Separable roles for Mycobacterium tuberculosis ESX-3 effectors in iron acquisition and virulence.Proceedings of the National Academy of Sciences of the United States of America · 2016
    Article
  10. Article
  11. Article
  12. Article
  13. Protein secretion and surface display in Gram-positive bacteria.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2012
    Review
  14. Article
  15. Article
  16. 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 4 institutions in 1 country.

Brian CallahanDivision of Genetics, Wadsworth Center, NYS Department of Health, Albany, NY 12201, USA.
Kiet Nguyen
Alissa Collins
Kayla Valdes
Michael Caplow
David K Crossman
Adrie J C Steyn
Leslie Eisele
Keith M Derbyshire
University of Alabama at Birmingham · USNew York State Department of Health · USUniversity at Albany, State University of New York · USUniversity of North Carolina at Chapel Hill · US

Funding

WhiB3 in M. tuberculosis virulenceR01AI058131 · NIAID · UNIVERSITY OF ALABAMA AT BIRMINGHAM · PI STEYN, ADRIE JC · 2004 to 2014
$3.6M
Training in Biodefense and Emerging Infectious DiseaseT32AI055429 · NIAID · WADSWORTH CENTER · PI MCDONOUGH, KATHLEEN A · 2004 to 2014
$2.2M
CONJUGATION AND RECOMBINATION IN MYCOBACTERIAR01AI042308 · NIAID · WADSWORTH CENTER · PI DERBYSHIRE, KEITH M · 1999 to 2009
$2.1M
MOLECULAR AND CELLULAR MICROBIAL PATHOGENESIST32AI007041 · NIAID · UNIVERSITY OF ALABAMA AT BIRMINGHAM · PI BRILES, DAVID E · 1985 to 2008
$1.6M
Congugal DNA transfer into M. tuberculosisR21AI070666 · NIAID · WADSWORTH CENTER · PI DERBYSHIRE, KEITH M · 2006 to 2007
$395k
Protein-protein association in mycobacteriaR21AI068928 · NIAID · UNIVERSITY OF ALABAMA AT BIRMINGHAM · PI STEYN, ADRIE JC · 2007 to 2008
$395k
Role of WhiB3 in M. tuberculosis virulenceR56AI058131 · NIAID · UNIVERSITY OF ALABAMA AT BIRMINGHAM · PI STEYN, ADRIE JC · 2009 to 2009
$366k
NIAID NIH HHS 1T32AI05542901A1NIAID NIH HHS AI058131NIAID NIH HHS AI0666NIAID NIH HHS AI068928NIAID NIH HHS AI42308NIAID NIH HHS R01 AI042308NIAID NIH HHS R01 AI058131NIAID NIH HHS R21 AI068928NIAID NIH HHS R21 AI070666NIAID NIH HHS R56 AI058131NIAID NIH HHS T32 AI007041NIAID NIH HHS T32 AI055429NIAID NIH HHS T32AI07041
6 · The paper itself

Abstract

Mycobacterium tuberculosis EsxA and EsxB proteins are founding members of the WXG100 (WXG) protein family, characterized by their small size (approximately 100 amino acids) and conserved WXG amino acid motif. M. tuberculosis contains 11 tandem pairs of WXG genes; each gene pair is thought to be coexpressed to form a heterodimer. The precise role of these proteins in the biology of M. tuberculosis is unknown, but several of the heterodimers are secreted, which is important for virulence. However, WXG proteins are not simply virulence factors, since nonpathogenic mycobacteria also express and secrete these proteins. Here we show that three WXG heterodimers have structures and properties similar to those of the M. tuberculosis EsxBA (MtbEsxBA) heterodimer, regardless of their host species and apparent biological function. Biophysical studies indicate that the WXG proteins from M. tuberculosis (EsxG and EsxH), Mycobacterium smegmatis (EsxA and EsxB), and Corynebacterium diphtheriae (EsxA and EsxB) are heterodimers and fold into a predominately alpha-helical structure. An in vivo protein-protein interaction assay was modified to identify proteins that interact specifically with the native WXG100 heterodimer. MtbEsxA and MtbEsxB were fused into a single polypeptide, MtbEsxBA, to create a biomimetic bait for the native heterodimer. The MtbEsxBA bait showed specific association with several esx-1-encoded proteins and EspA, a virulence protein secreted by ESX-1. The MtbEsxBA fusion peptide was also utilized to identify residues in both EsxA and EsxB that are important for establishing protein interactions with Rv3871 and EspA. Together, the results are consistent with a model in which WXG proteins perform similar biological roles in virulent and nonvirulent species.

Indexed as

Amino Acid SequenceBacterial ProteinsCircular DichroismMolecular Sequence DataMutagenesisMycobacteriumMycobacterium smegmatisMycobacterium tuberculosisProtein BindingProtein MultimerizationSequence Homology, Amino AcidUltracentrifugationBacterial Proteins

Identifiers

PMID19854905
PMCPMC2798242
OpenAlexW2148862092

What OpenQuestion holds

Textmetadata
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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.