Evidence map›Paper›PMID 21214873›Full record

ArticleMolecular oral microbiology2011

The bcp gene in the bcp-recA-vimA-vimE-vimF operon is important in oxidative stress resistance in Porphyromonas gingivalis W83.

N A Johnson, R M E McKenzie, H M Fletcher

Open access · greenAbstract readComparative Study
In one paragraph

Article in Molecular oral microbiology, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed
1.4field-weighted citation impact, top 20% 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

17 citing papers in PubMed, 21 citations in OpenAlex.

  1. Virulence diversity amongJournal of oral microbiology · 2026
    Review
  2. The Arsenal ofAntioxidants (Basel, Switzerland) · 2023
    Review
  3. Article
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  11. Why do bacteria use so many enzymes to scavenge hydrogen peroxide?Archives of biochemistry and biophysics · 2012
    Review
  12. Article
  13. Review
  14. Article
  15. Article
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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 1 institution in 1 country.

N A JohnsonCenter for Dental Research, School of Dentistry, Loma Linda University, Loma Linda, CA, USA.
R M E McKenzie
H M Fletcher
Loma Linda University · US

Funding

Studies on virulence regulation in PorphyromonasR01DE013664 · NIDCR · LOMA LINDA UNIVERSITY · PI FLETCHER, HANSEL M. · 2002 to 2011
$3.3M
Mechanisms for adaptation to oxidative stress in Porphyromonas gingivalisR01DE019730 · NIDCR · LOMA LINDA UNIVERSITY · PI FLETCHER, HANSEL M. · 2009 to 2013
$2.0M
Studies on the virulence regulation in PorphyromonasR56DE013664 · NIDCR · LOMA LINDA UNIVERSITY · PI FLETCHER, HANSEL M. · 2014 to 2014
$291k
NIDCR NIH HHS DE019730NIDCR NIH HHS DE13664NIDCR NIH HHS R01 DE013664NIDCR NIH HHS R01 DE019730NIDCR NIH HHS R56 DE013664
6 · The paper itself

Abstract

The ability of Porphyromonas gingivalis to overcome oxidative stress in the inflammatory environment of the periodontal pocket is critical for its survival. We have previously demonstrated that the recA locus, which carries the bacterioferritin co-migratory protein (bcp) gene and has a unique genetic architecture, plays a role in virulence regulation and oxidative stress resistance in P. gingivalis. To further characterize the bcp gene, which was confirmed to be part of the bcp-recA-vimA-vimE-vimF operon, we created a P. gingivalis bcp-defective isogenic mutant (FLL302) by allelic exchange. Compared with the wild-type, FLL302 had a similar growth rate, black pigmentation, β-hemolysis and UV sensitivity. Although there was no change in the distribution of gingipain activity, there was a 30% reduction in both Arg-X and Lys-X activities in the mutant strain compared with the wild-type. When exposed to 0.25 mm hydrogen peroxide, P. gingivalis FLL302 was more sensitive than the wild-type. In addition, the cloned P. gingivalis bcp gene increased resistance to 0.25 mm hydrogen peroxide in a bcp-defective Escherichia coli mutant. The mutant also demonstrated decreased aerotolerance when compared with the wild-type. Porphyromonas gingivalis FLL302 and the wild-type strain had similar virulence profiles in a mouse model of virulence. These observations suggest that the bcp gene may play a role in oxidative stress resistance but has a decreased functional significance in the pathogenic potential of P. gingivalis.

Indexed as

Adhesins, BacterialAnimalsBacterial ProteinsBacteroidaceae InfectionsChromosome MappingCysteine EndopeptidasesDisease Models, AnimalDrug Resistance, BacterialFemaleGingipain Cysteine EndopeptidasesHemolysisHydrogen PeroxideMiceMice, Inbred BALB CMultigene FamilyMutationAdhesins, BacterialBacterial Proteinsbacterioferritin comigratory protein, BacteriaCysteine EndopeptidasesGingipain Cysteine EndopeptidasesHydrogen PeroxideOxidantsOxygenRec A Recombinases

Identifiers

PMID21214873
PMCPMC5823246
OpenAlexW2159126389

What OpenQuestion holds

Textmetadata
LicenceTDM
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.