Evidence map›Paper›PMID 21602384›Full record

ArticleApplied and environmental microbiology2011

Disruption of a type II endonuclease (TDE0911) enables Treponema denticola ATCC 35405 to accept an unmethylated shuttle vector.

Jiang Bian, Chunhao Li

Open access · bronzeAbstract read
In one paragraph

Article in Applied and environmental microbiology, 2011. 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
0.9field-weighted citation impact, top 21% 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

16 citing papers in PubMed, 21 citations in OpenAlex.

  1. Article
  2. Emerging oralFrontiers in oral health · 2025
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  6. Genetic Manipulations of Oral Spirochete Treponema denticola.Methods in molecular biology (Clifton, N.J.) · 2021
    Article
  7. Article
  8. The Role ofFrontiers in cellular and infection microbiology · 2019
    Article
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  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

2 authors at 1 institution in 1 country.

Jiang BianDepartment of Oral Biology, The State University of New York at Buffalo, Buffalo, New York 14214, USA.
Chunhao Li
University at Buffalo, State University of New York · US

Funding

Developing Inhibitors of LuxS-dependent Quorum Sensing Systems in Oral BacteriaR01DE019667 · NIDCR · STATE UNIVERSITY OF NEW YORK AT BUFFALO · PI LI, CHUNHAO CHRIS · 2010 to 2013
$1.4M
Role of Zonula Occludens Toxin in the Pathogenesis of Treponema denticolaR21DE018829 · NIDCR · STATE UNIVERSITY OF NEW YORK AT BUFFALO · PI LI, CHUNHAO CHRIS · 2008 to 2009
$427k
NIDCR NIH HHS DE018829NIDCR NIH HHS DE019667NIDCR NIH HHS R01 DE019667NIDCR NIH HHS R21 DE018829
6 · The paper itself

Abstract

The oral spirochete Treponema denticola is associated with human periodontal disease. T. denticola ATCC 35405 and ATCC 33520 are two routinely used laboratory strains. Compared to T. denticola ATCC 33520, ATCC 35405 is more virulent but less accessible to genetic manipulations. For instance, the shuttle vectors of ATCC 33520 cannot be transformed into strain ATCC 35405. The lack of a shuttle vector has been a barrier to study the biology and virulence of T. denticola ATCC 35405. In this report, we hypothesize that T. denticola ATCC 35405 may have a unique DNA restriction-modification (R-M) system that prevents it from accepting the shuttle vectors of ATCC 33520 (e.g., the shuttle plasmid pBFC). To test this hypothesis, DNA restriction digestion, PCR, and Southern blot analyses were conducted to identify the differences between the R-M systems of these two strains. DNA restriction digestion analysis of these strains showed that only the cell extract from ATCC 35405 was able to digest pBFC. Consistently, PCR and Southern blot analyses revealed that the genome of T. denticola ATCC 35405 encodes three type II endonucleases that are absent in ATCC 33520. Among these three endonucleases, TDE0911 was predicted to cleave unmethylated double-stranded DNA and to be most likely responsible for the cleavage of unmethylated pBFC. In agreement with this prediction, the mutant of TDE0911 failed to cleave unmethylated pBFC plasmid, and it could accept the unmethylated shuttle vector. The study described here provides us with a new tool and strategy to genetically manipulate T. denticola, in particular ATCC 35405, and other strains that may carry similar endonucleases.

Indexed as

Gene Knockout TechniquesTransformation, BacterialDNA, BacterialDNA Restriction EnzymesGenetic VectorsTreponema denticolaDNA, BacterialDNA Restriction Enzymes

Identifiers

PMID21602384
PMCPMC3127684
OpenAlexW2059452369

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.