Evidence map›Paper›PMID 15189997›Full record

ArticleEukaryotic cell2004

Hemoglobin regulates expression of an activator of mating-type locus alpha genes in Candida albicans.

Michael L Pendrak, S Steve Yan, David D Roberts

Open access · diamondAbstract read
In one paragraph

Article in Eukaryotic cell, 2004. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed
1.7field-weighted citation impact, top 17% 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

20 citing papers in PubMed, 42 citations in OpenAlex.

  1. Genetic and environmental control of parasexual reproduction in the pathogenicMicrobiology and molecular biology reviews : MMBR · 2025
    Review
  2. White-opaque switching inMicrobiology and molecular biology reviews : MMBR · 2024
    Review
  3. Unraveling HowJournal of fungi (Basel, Switzerland) · 2020
    Review
  4. Article
  5. Article
  6. Article
  7. Article
  8. Review
  9. Review
  10. Unisexual reproduction.Advances in genetics · 2014
    Review
  11. Article
  12. Article
  13. Article
  14. Article
  15. Review
  16. Regulation of white-opaque switching in Candida albicans.Medical microbiology and immunology · 2010
    Review
  17. Candida albicans cell wall proteins.Microbiology and molecular biology reviews : MMBR · 2008
    Review
  18. Article
  19. Nitric oxide regulates angiogenesis through a functional switch involving thrombospondin-1.Proceedings of the National Academy of Sciences of the United States of America · 2005
    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

3 authors at 3 institutions in 1 country.

Michael L PendrakLaboratory of Pathology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892-1500, USA. droberts@helix.nih.gov
S Steve Yan
David D Roberts
Center for Cancer Research · USNational Cancer Institute · USNational Institutes of Health · US

Funding

Host Colonization and Vascular Dissemination of <I>Candida albicans&lZIASC009173 · NCI · DIVISION OF CLINICAL SCIENCES - NCI · PI ROBERTS, DAVID D · 2009 to 2017
$3.2M
RECEPTORS FOR HUMAN PATHOGENSZ01SC009173 · SC · DIVISION OF CLINICAL SCIENCES - NCI · PI ROBERTS, DAVID D · 1996 to 2008
$763k
6 · The paper itself

Abstract

Phenotypic switching from the white to the opaque phase is a necessary step for mating in the pathogenic fungus Candida albicans. Suppressing switching during vascular dissemination of the organism may be advantageous, because opaque cells are more susceptible to host defenses. A repressor of white-opaque switching, HBR1 (hemoglobin response gene 1), was identified based on its specific induction following growth in the presence of exogenous hemoglobin. Deletion of a single HBR1 allele allowed opaque phase switching and mating competence, accompanied by a lack of detectable MTL alpha1 and alpha2 gene expression and enhanced MTLa1 gene expression. Conversely, overexpression of Hbr1p or exposure to hemoglobin increased MTLalpha gene expression. The a1/alpha2 repressed target gene CAG1 was derepressed in the same mutant in a hemoglobin-sensitive manner. Regulation of CAG1 by hemoglobin required an intact MTLa1 gene. Several additional Mtlp targets were perturbed in HBR1 mutants in a manner consistent with commitment to an a mating phenotype, including YEL007w, MFalpha, HST6, and RAM2. Therefore, Hbr1 is part of a host factor-regulated signaling pathway that controls white-opaque switching and mating in the absence of allelic deletion at the MTL locus.

Indexed as

Genes, Mating Type, FungalAllelesAmino Acid SequenceCandida albicansDNA PrimersFungal ProteinsGene Expression Regulation, FungalGenes, FungalGTP-Binding ProteinsHemoglobinsMolecular Sequence DataMutationPhenotypeSignal TransductionCAG1 protein, Candida albicansDNA PrimersFungal ProteinsGTP-Binding ProteinsHemoglobins

Identifiers

PMID15189997
PMCPMC420132
OpenAlexW2130252243

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.