Evidence map›Paper›PMID 26555247›Full record

ArticleThe ISME journal2016

The corrinoid cofactor of reductive dehalogenases affects dechlorination rates and extents in organohalide-respiring Dehalococcoides mccartyi.

Jun Yan, Burcu Şimşir, Abigail T Farmer, Meng Bi, Yi Yang, Shawn R Campagna, Frank E Löffler

Open access · bronzeAbstract read
In one paragraph

Article in The ISME journal, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 34 papers.

0numbers the graph read from it
0cells of the map it votes in
34citing papers in PubMed
4.0field-weighted citation impact, top 6% 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

34 citing papers in PubMed, 78 citations in OpenAlex.

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  19. Flexible Cobamide Metabolism inJournal of bacteriology · 2020
    Article
  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

7 authors at 2 institutions in 1 country.

Jun YanDepartment of Microbiology, University of Tennessee, Knoxville, TN, USA.
Burcu ŞimşirDepartment of Microbiology, University of Tennessee, Knoxville, TN, USA.
Abigail T FarmerDepartment of Chemistry, University of Tennessee, Knoxville, TN, USA.
Meng BiDepartment of Microbiology, University of Tennessee, Knoxville, TN, USA.
Yi YangDepartment of Microbiology, University of Tennessee, Knoxville, TN, USA.
Shawn R CampagnaDepartment of Chemistry, University of Tennessee, Knoxville, TN, USA.
Frank E LöfflerDepartment of Microbiology, University of Tennessee, Knoxville, TN, USA.
University of Tennessee at Knoxville · USOak Ridge National Laboratory · US

Funding

Biogeochemical Controls over Corrinoid Bioavailability to Organohalide-RespiringR01ES024294 · NIEHS · UNIVERSITY OF TENNESSEE KNOXVILLE · PI LOEFFLER, FRANK E. · 2014 to 2017
$775k
NIEHS NIH HHS R01 ES024294NIEHS NIH HHS R01ES24294
6 · The paper itself

Abstract

Corrinoid auxotrophic organohalide-respiring Dehalococcoides mccartyi (Dhc) strains are keystone bacteria for reductive dechlorination of toxic and carcinogenic chloroorganic contaminants. We demonstrate that the lower base attached to the essential corrinoid cofactor of reductive dehalogenase (RDase) enzyme systems modulates dechlorination activity and affects the vinyl chloride (VC) RDases BvcA and VcrA differently. Amendment of 5,6-dimethylbenzimidazolyl-cobamide (DMB-Cba) to Dhc strain BAV1 and strain GT cultures supported cis-1,2-dichloroethene-to-ethene reductive dechlorination at rates of 107.0 (±12.0) μM and 67.4 (±1.4) μM Cl(-) released per day, respectively. Strain BAV1, expressing the BvcA RDase, reductively dechlorinated VC to ethene, although at up to fivefold lower rates in cultures amended with cobamides carrying 5-methylbenzimidazole (5-MeBza), 5-methoxybenzimidazole (5-OMeBza) or benzimidazole (Bza) as the lower base. In contrast, strain GT harboring the VcrA RDase failed to grow and dechlorinate VC to ethene in medium amended with 5-OMeBza-Cba or Bza-Cba. The amendment with DMB to inactive strain GT cultures restored the VC-to-ethene-dechlorinating phenotype and intracellular DMB-Cba was produced, demonstrating cobamide uptake and remodeling. The distinct responses of Dhc strains with BvcA versus VcrA RDases to different cobamides implicate that the lower base exerts control over Dhc reductive dechlorination rates and extents (that is, detoxification), and therefore the dynamics of Dhc strains with discrete reductive dechlorination capabilities. These findings emphasize that the role of the corrinoid/lower base synthesizing community must be understood to predict strain-specific Dhc activity and achieve efficacious contaminated site cleanup.

Indexed as

BenzimidazolesBiodegradation, EnvironmentalChloroflexiCobamidesDichloroethylenesEthylenesHalogenationVinyl ChlorideWater Pollutants, Chemical1,2-dichloroethylene5-methylbenzimidazoleBenzimidazolesCobamidesDichloroethylenesethyleneEthylenesVinyl ChlorideWater Pollutants, Chemical

Identifiers

PMID26555247
PMCPMC5029212
OpenAlexW2174111128

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.