Student or educator? Sign up with your school email and get 6 months of Pro free.
Cited by 287

The DOI matches its Crossref record; 63 of the 63 references it cites were found in a registry or an index.

A novel double‐tryptophan peptide pheromone controls competence in Streptococcus spp. via an Rgg regulator

Open access
Mashburn‐Warren, Lauren, Morrison, Donald A., Federle, Michael J.·2010·Molecular Microbiology

Abstract

Summary: All streptococcal genomes encode the alternative sigma factor SigX and 21 SigX‐dependent proteins required for genetic transformation, yet no pyogenic streptococci are known to develop competence. Resolving this paradox may depend on understanding the regulation of sigX . We report the identification of a regulatory circuit linked to the sigX genes of mutans, pyogenic, and bovis streptococci that uses a novel small, double‐tryptophan‐containing sigX ‐inducing peptide (XIP) pheromone. In all three groups, the XIP gene ( comS ), and sigX have identical, non‐canonical promoters consisting of 9 bp inverted repeats separated from a −10 hexamer by 19 bp. comS is adjacent to a gene encoding a putative transcription factor of the Rgg family and is regulated by its product, which we designate ComR. Deletion of comR or comS in Streptococcus mutans abolished transformability, as did deletion of the oligopeptide permease subunit oppD , suggesting that XIP is imported. Providing S. mutans with synthetic fragments of ComS revealed that seven C‐terminal residues, including the WW motif, cause robust induction of both sigX and the competent state. We propose that this circuit is the proximal regulator of sigX in S. mutans , and we infer that it controls competence in a parallel way in all pyogenic and bovis streptococci.

Overview

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1111/j.1365-2958.2010.07361.x

Cites

63 of 63 references verified0 citation errors · 0 not checkable

Statistics

Verification

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Citations

Cites

Show all 63 references

Cited by

See all 287

Metadata

Authors
Mashburn‐Warren, L., Morrison, D. A., & Federle, M. J.
Venue
Molecular Microbiology
Publisher
Wiley
Published
2010-09-14
Volume
78
Issue
3
Pages
589-606
ISSN
  • 0950-382X (ISSN-L)
  • 1365-2958
OpenAlex
W2139222416
Cited by
287
References
63
FWCI
11.06
Type
journal article
Language
en
Open access
bronze

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review

How to cite

Cite CoChat for the checks on this page, and the paper for its own findings.

This page
CoChat. (2026). Citation check: A novel double‐tryptophan peptide pheromone controls competence in Streptococcus spp. via an Rgg regulator. https://app.cochat.ai/papers/10.1111/j.1365-2958.2010.07361.x
The paper
Mashburn‐Warren, L., Morrison, D. A., & Federle, M. J. (2010). A novel double‐tryptophan peptide pheromone controls competence in Streptococcus spp. via an Rgg regulator. Molecular Microbiology. https://doi.org/10.1111/j.1365-2958.2010.07361.x

Data sources

Bibliographic data: Semantic Scholar, OpenAlex, Crossref.

Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.