Evidence map›Paper›PMID 19919672›Full record

ArticleMolecular microbiology2010

Substrate specificity of three cytochrome c haem lyase isoenzymes from Wolinella succinogenes: unconventional haem c binding motifs are not sufficient for haem c attachment by NrfI and CcsA1.

Melanie Kern, Florian Eisel, Juliane Scheithauer, Robert G Kranz, Jörg Simon

Abstract read
In one paragraph

Article in Molecular microbiology, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed
2.2field-weighted citation impact, top 13% 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

15 citing papers in PubMed, 44 citations in OpenAlex.

  1. Lysine or histidine? examining the role of the proximal ligand at the active heme center of cytochrome c nitrite reductase.Journal of biological inorganic chemistry : JBIC : a publication of the Society of Biological Inorganic Chemistry · 2026
    Article
  2. Review
  3. Article
  4. Recombinant Biogenesis and Analysis of Cytochrome c Species.Methods in molecular biology (Clifton, N.J.) · 2024
    Article
  5. Article
  6. Article
  7. Article
  8. Maturation of PlastidFrontiers in plant science · 2017
    Review
  9. Article
  10. Article
  11. Refined NrfA phylogeny improves PCR-based nrfA gene detection.Applied and environmental microbiology · 2014
    Article
  12. Article
  13. Article
  14. Article
  15. 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

5 authors at 2 institutions in 2 countries.

Melanie KernInstitute of Microbiology and Genetics, Technische Universität Darmstadt, Schnittspahnstr. 10, 64287 Darmstadt, Germany.
Florian Eisel
Juliane Scheithauer
Robert G Kranz
Jörg Simon
Goethe University Frankfurt · DEWashington University in St. Louis · US

Funding

MOLECULAR GENETIC ANALYSES OF CYTOCHROMES C BIOGENESISR01GM047909 · NIGMS · WASHINGTON UNIVERSITY · PI KRANZ, ROBERT G. · 1994 to 2019
$6.0M
CYTOCHROMES C BIOGENESISR55GM047909 · NIGMS · WASHINGTON UNIVERSITY · PI KRANZ, ROBERT G. · 1992 to 1992
–
NIGMS NIH HHS GM 47909NIGMS NIH HHS R01 GM047909
6 · The paper itself

Abstract

Bacterial c-type cytochrome maturation is dependent on a complex enzymic machinery. The key reaction is catalysed by cytochrome c haem lyase (CCHL) that usually forms two thioether bonds to attach haem b to the cysteine residues of a haem c binding motif (HBM) which is, in most cases, a CX(2)CH sequence. Here, the HBM specificity of three distinct CCHL isoenzymes (NrfI, CcsA1 and CcsA2) from the Epsilonproteobacterium Wolinella succinogenes was investigated using either W. succinogenes or Escherichia coli as host organism. Several reporter c-type cytochromes were employed including cytochrome c nitrite reductases (NrfA) from E. coli and Campylobacter jejuni that differ in their active-site HBMs (CX(2)CK or CX(2)CH). W. succinogenes CcsA2 was found to attach haem to standard CX(2)CH motifs in various cytochromes whereas other HBMs were not recognized. NrfI was able to attach haem c to the active-site CX(2)CK motif of both W. succinogenes and E. coli NrfA, but not to NrfA from C. jejuni. Different apo-cytochrome variants carrying the CX(15)CH motif, assumed to be recognized by CcsA1 during maturation of the octahaem cytochrome MccA, were not processed by CcsA1 in either W. succinogenes or E. coli. It is concluded that the dedicated CCHLs NrfI and CcsA1 attach haem to non-standard HBMs only in the presence of further, as yet uncharacterized structural features. Interestingly, it proved impossible to delete the ccsA2 gene from the W. succinogenes genome, a finding that is discussed in the light of the available genomic, proteomic and functional data on W. succinogenes c-type cytochromes.

Indexed as

Amino Acid MotifsBacterial ProteinsBinding SitesCampylobacter jejuniEscherichia coliHemeIsoenzymesLyasesSubstrate SpecificityWolinellaBacterial Proteinscytochrome C synthetaseHemeIsoenzymesLyases

Identifiers

PMID19919672
PMCPMC3414424
OpenAlexW1979852978

What OpenQuestion holds

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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.