Evidence map›Paper›PMID 10496878›Full record

ArticleInfection and immunity1999

Identification of the znuA-encoded periplasmic zinc transport protein of Haemophilus ducreyi.

D A Lewis, J Klesney-Tait, S R Lumbley, C K Ward, J L Latimer, C A Ison, E J Hansen

Open access · bronzeAbstract read
In one paragraph

Article in Infection and immunity, 1999. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 45 papers.

0numbers the graph read from it
0cells of the map it votes in
45citing papers in PubMed
4.6field-weighted citation impact, top 5% 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

45 citing papers in PubMed, 90 citations in OpenAlex.

  1. Article
  2. Proteomic profiling of zinc homeostasis mechanisms inbioRxiv : the preprint server for biology · 2025
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  17. Competition for zinc binding in the host-pathogen interaction.Frontiers in cellular and infection microbiology · 2013
    Review
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  19. Article
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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

7 authors at 3 institutions in 3 countries.

D A LewisDepartment of Microbiology, University of Texas Southwestern Medical Center, Dallas, Texas 75235-9048, USA.
J Klesney-Tait
S R Lumbley
C K Ward
J L Latimer
C A Ison
E J Hansen
The University of Texas Southwestern Medical Center · USSpanish Oncology Genitourinary Group · ESThe London College · GB

Funding

Haemophilus ducreyi Inhibits PhagocytosisR37AI032011 · NIAID · UT SOUTHWESTERN MEDICAL CENTER · PI HANSEN, ERIC JOHN · 2006 to 2015
$3.8M
MOLECULAR PATHOGENESIS OF CHANCROIDR01AI032011 · NIAID · UNIVERSITY OF TEXAS SW MED CTR/DALLAS · PI HANSEN, ERIC JOHN · 1992 to 2004
$1.7M
Haemophilus ducreyi Inhibits PhagocytosisR56AI032011 · NIAID · UNIVERSITY OF TEXAS SW MED CTR/DALLAS · PI HANSEN, ERIC JOHN · 2005 to 2005
$390k
NIAID NIH HHS AI32011NIAID NIH HHS R01 AI032011NIAID NIH HHS R37 AI032011NIAID NIH HHS R56 AI032011Wellcome Trust
6 · The paper itself

Abstract

The znuA gene of Haemophilus ducreyi encodes a 32-kDa (mature) protein that has homology to both the ZnuA protein of Escherichia coli and the Pzp1 protein of H. influenzae; both of these latter proteins are members of a growing family of prokaryotic zinc transporters. Inactivation of the H. ducreyi 35000 znuA gene by insertional mutagenesis resulted in a mutant that grew more slowly than the wild-type parent strain in vitro unless ZnCl(2) was provided at a final concentration of 100 microM. Other cations tested did not restore growth of this H. ducreyi mutant to wild-type levels. The H. ducreyi ZnuA protein was localized to the periplasm, where it is believed to function as the binding component of a zinc transport system. Complementation of the znuA mutation with the wild-type H. ducreyi znuA gene provided in trans restored the ability of this H. ducreyi mutant to grow normally in the absence of exogenously added ZnCl2. The wild-type H. ducreyi znuA gene was also able to complement a H. influenzae pzp1 mutation. The H. ducreyi znuA isogenic mutant exhibited significantly decreased virulence (P = 0.0001) when tested in the temperature-dependent rabbit model for experimental chancroid. This decreased virulence was not observed when the znuA mutant was complemented with the wild-type H. ducreyi znuA gene provided in trans.

Indexed as

Genes, BacterialAmino Acid SequenceAnimalsBacterial ProteinsCarrier ProteinsCloning, MolecularGenetic Complementation TestHaemophilus ducreyiMolecular Sequence DataMutationRabbitsVirulenceZincBacterial ProteinsCarrier ProteinsZinc

Identifiers

PMID10496878
PMCPMC96853
OpenAlexW2155193404

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.