Evidence map›Paper›PMID 33170386›Full record

ArticleWorld journal of microbiology & biotechnology2020

Cloning and characterization of a L-lactate dehydrogenase gene from Ruminococcaceae bacterium CPB6.

Qingzhuoma Yang, Cuicui Wei, Shengtao Guo, Jun Liu, Yong Tao

Abstract read
PubMed Publisher
In one paragraph

Article in World journal of microbiology & biotechnology, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.

0numbers the graph read from it
0cells of the map it votes in
7citing papers in PubMed
0.9field-weighted citation impact, top 26% 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

7 citing papers in PubMed, 15 citations in OpenAlex.

  1. Review
  2. Characterization ofFrontiers in immunology · 2023
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  5. Review
  6. Genome-Wide Transcriptomic Analysis ofJournal of microbiology and biotechnology · 2021
    Article
  7. 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

5 authors at 3 institutions in 1 country.

Qingzhuoma YangCAS Key Laboratory of Environmental and Applied Microbiology, Chengdu Institute of Biology, University of Chinese Academy of Sciences, Chengdu, 610041, China.
Cuicui WeiCAS Key Laboratory of Environmental and Applied Microbiology, Chengdu Institute of Biology, University of Chinese Academy of Sciences, Chengdu, 610041, China.
Shengtao GuoBGI Education Center, University of Chinese Academy of Sciences, Shenzhen, 518083, China.
Jun LiuFaculty of Bioengineering, Sichuan University of Science & Engineering, Xueyuan Street 180#, Huixing Rd., Zigong, 643000, China.
Yong TaoCAS Key Laboratory of Environmental and Applied Microbiology, Chengdu Institute of Biology, University of Chinese Academy of Sciences, Chengdu, 610041, China. taoyong@cib.ac.cn.ORCID http://orcid.org/0000-0001-8523-9122
Chengdu Institute of Biology · CNSichuan University of Science and Engineering · CNUniversity of Chinese Academy of Sciences · CN

Funding

the Natural Science Foundation of China 31770090
6 · The paper itself

Abstract

Lactate are proved to be attractive electron donor for the production of n-caproic acid (CA) that is a high value-added fuel precursor and chemical feedstock, but little is known about molecular mechanism of lactate transformation. In the present study, the gene for L-lactate dehydrogenase (LDH, EC.1.1.1.27) from a Ruminococcaceae strain CPB6 was cloned and expressed in Escherichia coli BL21 (DE3) with plasmid pET28a. The recombinant LDH exhibited molecular weight of 36-38 kDa in SDS-PAGE. The purified LDH was found to have the maximal oxidation activity of 29.6 U/mg from lactate to pyruvate at pH 6.5, and the maximal reduction activity of 10.4 U/mg from pyruvate to lactate at pH 8.5, respectively. Strikingly, its oxidative activity predominates over reductive activity, leading to a 17-fold increase for the utilization of lactate in E. coli/pET28a-LDH than E. coli/pET28a. The CPB6 LDH gene encodes a 315 amino acid protein sharing 42.19% similarity with Clostridium beijerinckii LDH, and lower similarity with LDHs of other organisms. Significant difference were observed between the CPB6 LDH and C. beijerinckii and C. acetobutylicum LDH in the predicted tertiary structure and active center. Further, X-ray crystal structure analysis need to be performed to verify the specific active center of the CPB6 LDH and its role in the conversion of lactate into CA.

Indexed as

Bacterial ProteinsCloning, MolecularCrystallography, X-RayEscherichia coliEubacterialesHydrogen-Ion ConcentrationLactic AcidL-Lactate DehydrogenaseModels, MolecularMolecular WeightPlasmidsProtein Structure, TertiaryPyruvic AcidRecombinant ProteinsBacterial ProteinsLactic AcidL-Lactate DehydrogenasePyruvic AcidRecombinant ProteinsE. coli expressionEnzyme activityLactate oxidationL-lactate dehydrogenasen-caproic acid

Identifiers

PMID33170386
OpenAlexW3100394358

What OpenQuestion holds

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Registered trials

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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.