Evidence map›Paper›PMID 28439766›Full record

ArticleJournal of industrial microbiology & biotechnology2017

Enhanced butyric acid tolerance and production by Class I heat shock protein-overproducing Clostridium tyrobutyricum ATCC 25755.

Yukai Suo, Sheng Luo, Yanan Zhang, Zhengping Liao, Jufang Wang

Abstract read
PubMed Publisher
In one paragraph

Article in Journal of industrial microbiology & biotechnology, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed
2.6field-weighted citation impact, top 10% 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

18 citing papers in PubMed, 61 citations in OpenAlex.

  1. Article
  2. Advances in the biological production of butyric acid.World journal of microbiology & biotechnology · 2026
    Review
  3. Review
  4. Review
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  8. Review
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  11. Construction ofFrontiers in microbiology · 2023
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  12. Metabolic changes of the acetogenFrontiers in microbiology · 2022
    Article
  13. Biodegradation of aromatic pollutants meets synthetic biology.Synthetic and systems biotechnology · 2021
    Article
  14. Review
  15. Degeneration of industrial bacteria caused by genetic instability.World journal of microbiology & biotechnology · 2020
    Review
  16. Article
  17. Construction of a RobustFrontiers in bioengineering and biotechnology · 2020
    Article
  18. 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 2 institutions in 1 country.

Yukai SuoSchool of Bioscience & Bioengineering, South China University of Technology, Guangzhou, 510006, China.
Sheng LuoSchool of Bioscience & Bioengineering, South China University of Technology, Guangzhou, 510006, China.
Yanan ZhangSchool of Bioscience & Bioengineering, South China University of Technology, Guangzhou, 510006, China.
Zhengping LiaoSchool of Bioscience & Bioengineering, South China University of Technology, Guangzhou, 510006, China.
Jufang WangSchool of Bioscience & Bioengineering, South China University of Technology, Guangzhou, 510006, China. jufwang@scut.edu.cn.
Bioscience (China) · CNSouth China University of Technology · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The response of Clostridium tyrobutyricum to butyric acid stress involves various stress-related genes, and therefore overexpression of stress-related genes can improve butyric acid tolerance and yield. Class I heat shock proteins (HSPs) play an important role in the process of protecting bacteria from sudden changes of extracellular stress by assisting protein folding correctly. The results of quantitative real-time PCR indicated that the Class I HSGs grpE, dnaK, dnaJ, groEL, groES, and htpG were significantly upregulated under butyric acid stress, especially the dnaK and groE operons. Overexpression of groESL and htpG could significantly improve the tolerance of C. tyrobutyricum to butyric acid, while overexpression of dnaK and dnaJ showed negative effects on butyric acid tolerance. Acid production was also significantly promoted by increased GroESL expression levels; the final butyric acid and acetic acid concentrations were 28.2 and 38% higher for C. tyrobutyricum ATCC 25755/groESL than for the wild-type strain. In addition, when fed-batch fermentation was carried out using cell immobilization in a fibrous-bed bioreactor, the butyric acid yield produced by C. tyrobutyricum ATCC 25755/groESL reached 52.2 g/L, much higher than that for the control. The improved butyric acid yield is probably attributable to the high GroES and GroEL levels, which can stabilize the biosynthetic machinery of C. tyrobutyricum under extracellular butyric acid stress.

Indexed as

Industrial MicrobiologyBacterial ProteinsBatch Cell Culture TechniquesBioreactorsButyric AcidCells, ImmobilizedClostridium tyrobutyricumFermentationGene Expression Regulation, BacterialGenes, BacterialHeat-Shock ProteinsBacterial ProteinsButyric AcidHeat-Shock ProteinsButyric acid fermentationButyric acid stressClostridium tyrobutyricumFibrous-bed bioreactorGroESLHeat shock protein

Identifiers

PMID28439766
OpenAlexW2606528792

What OpenQuestion holds

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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.