Evidence map›Paper›PMID 17641688›Full record

ArticleThe EMBO journal2007

Redox-active cysteines of a membrane electron transporter DsbD show dual compartment accessibility.

Seung-Hyun Cho, Amir Porat, Jiqing Ye, Jon Beckwith

Open access · bronzeAbstract read
In one paragraph

Article in The EMBO journal, 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers.

0numbers the graph read from it
0cells of the map it votes in
25citing papers in PubMed
3.1field-weighted citation impact, top 8% 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

25 citing papers in PubMed, 49 citations in OpenAlex.

  1. Giant viruses encode vitamin K-based redox modules for lipid modification.Proceedings of the National Academy of Sciences of the United States of America · 2026
    Article
  2. Biochemistry · 2026
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  3. Review
  4. Article
  5. Article
  6. Review
  7. Article
  8. Article
  9. Review
  10. Article
  11. Article
  12. Cellular disulfide bond formation in bioactive peptides and proteins.International journal of molecular sciences · 2015
    Review
  13. Article
  14. Review
  15. Review
  16. Many roles of the bacterial envelope reducing pathways.Antioxidants & redox signaling · 2013
    Review
  17. Disulfide bond formation in the mammalian endoplasmic reticulum.Cold Spring Harbor perspectives in biology · 2012
    Review
  18. Article
  19. Review
  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

4 authors at 2 institutions in 1 country.

Seung-Hyun ChoDepartment of Microbiology and Molecular Genetics, Harvard Medical School, Harvard University, Boston, MA 02115, USA.
Amir Porat
Jiqing Ye
Jon Beckwith
Harvard University · USHoward Hughes Medical Institute · US

Funding

Microbial Diversity in Mechanisms of Disulfide Bond Formation and ReductionR01GM041883 · NIGMS · HARVARD UNIVERSITY (MEDICAL SCHOOL) · PI BOYD, DANA · 1989 to 2014
$7.8M
NIGMS NIH HHS GM041883
6 · The paper itself

Abstract

The membrane-embedded domain of the unusual electron transporter DsbD (DsbDbeta) uses two redox-active cysteines to catalyze electron transfer between thioredoxin-fold polypeptides on opposite sides of the bacterial cytoplasmic membrane. How the electrons are transferred across the membrane is unknown. Here, we show that DsbDbeta displays an inherent functional and structural symmetry: first, the two cysteines of DsbDbeta can be alkylated from both the cytoplasm and the periplasm. Second, when the two cysteines are disulfide-bonded, cysteine scanning shows that the C-terminal halves of the cysteine-containing transmembrane segments 1 and 4 are exposed to the aqueous environment while the N-terminal halves are not. Third, proline residues located pseudo-symmetrically around the two cysteines are required for redox activity and accessibility of the cysteines. Fourth, mixed disulfide complexes, apparent intermediates in the electron transfer process, are detected between DsbDbeta and thioredoxin molecules on each side of the membrane. We propose a model where the two redox-active cysteines are located at the center of the membrane, accessible on both sides of the membrane to the thioredoxin proteins.

Indexed as

Amino Acid SequenceCysteineDisulfidesMembrane Transport ProteinsMolecular Sequence DataOxidation-ReductionSequence Homology, Amino AcidCysteineDisulfidesMembrane Transport Proteins

Identifiers

PMID17641688
PMCPMC1948999
OpenAlexW2149512759

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.