Evidence map›Paper›PMID 17322319›Full record

ArticleJournal of bacteriology2007

Comparative analysis of hmuO function and expression in Corynebacterium species.

Carey A Kunkle, Michael P Schmitt

Abstract readComparative Study
In one paragraph

Article in Journal of bacteriology, 2007. 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
–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

16 citing papers in PubMed.

  1. Article
  2. Molecular basis of hemoglobin binding and heme removal inProceedings of the National Academy of Sciences of the United States of America · 2025
    Article
  3. Review
  4. Article
  5. Heme Uptake and Utilization by Gram-Negative Bacterial Pathogens.Frontiers in cellular and infection microbiology · 2019
    Review
  6. Review
  7. Article
  8. Article
  9. Article
  10. Article
  11. Review
  12. Article
  13. Article
  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

2 authors.

Carey A KunkleLaboratory of Respiratory and Special Pathogens, Division of Bacterial, Parasitic, and Allergenic Products, Center for Biologics Evaluation and Research, Food and Drug Adminisstration, Bethesda, MD 20892, USA.
Michael P Schmitt

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

We have constructed defined deletions in the hmuO gene from Corynebacterium diphtheriae and Corynebacterium ulcerans and show that the C. ulcerans hmuO mutation results in a significant reduction in hemoglobin-iron utilization, whereas in C. diphtheriae strains, deletion of hmuO caused no or only partial reduction in the utilization of heme as an iron source. We also show that expression from the C. ulcerans hmuO promoter exhibits minimal regulation by iron and heme whereas transcription from the C. diphtheriae hmuO promoter shows both significant iron repression and heme-dependent activation. These findings indicate that variability in HmuO function and expression exists among Corynebacterium species.

Indexed as

Bacterial ProteinsBase SequenceCorynebacteriumCorynebacterium diphtheriaeGene DeletionGene Expression Regulation, BacterialHemeHeme Oxygenase (Decyclizing)IronMolecular Sequence DataRNA, BacterialRNA, MessengerTranscription, GeneticBacterial ProteinsHemeHeme Oxygenase (Decyclizing)HmuO protein, bacteriaIronRNA, BacterialRNA, Messenger

Identifiers

PMID17322319
PMCPMC1855885

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.