Evidence map›Paper›PMID 25595755›Full record

ArticleApplied and environmental microbiology2015

Improved production of propionic acid in Propionibacterium jensenii via combinational overexpression of glycerol dehydrogenase and malate dehydrogenase from Klebsiella pneumoniae.

Long Liu, Xin Zhuge, Hyun-Dong Shin, Rachel R Chen, Jianghua Li, Guocheng Du, Jian Chen

Open access · bronzeAbstract read
In one paragraph

Article in Applied and environmental microbiology, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed
3.0field-weighted citation impact, top 8% 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

13 citing papers in PubMed, 52 citations in OpenAlex.

  1. Article
  2. Article
  3. Review
  4. Article
  5. Article
  6. Microbial response to acid stress: mechanisms and applications.Applied microbiology and biotechnology · 2020
    Review
  7. Genome-scale model guided design ofMetabolic engineering communications · 2018
    Article
  8. Review
  9. Article
  10. Article
  11. Article
  12. Review
  13. Key enzymes catalyzing glycerol to 1,3-propanediol.Biotechnology for biofuels · 2016
    Review
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 2 countries.

Long LiuKey Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, Jiangnan University, Wuxi, China Key Laboratory of Industrial Biotechnology, Ministry of Education, Jiangnan University, Wuxi, China.
Xin ZhugeKey Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, Jiangnan University, Wuxi, China Key Laboratory of Industrial Biotechnology, Ministry of Education, Jiangnan University, Wuxi, China.
Hyun-Dong ShinSchool of Chemical and Biomolecular Engineering, Georgia Institute of Technology, Atlanta, Georgia, USA.
Rachel R ChenSchool of Chemical and Biomolecular Engineering, Georgia Institute of Technology, Atlanta, Georgia, USA.
Jianghua LiKey Laboratory of Industrial Biotechnology, Ministry of Education, Jiangnan University, Wuxi, China.
Guocheng DuKey Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, Jiangnan University, Wuxi, China Key Laboratory of Industrial Biotechnology, Ministry of Education, Jiangnan University, Wuxi, China gcdu@jiangnan.edu.cn jchen@jiangnan.edu.cn.
Jian ChenNational Engineering of Laboratory for Cereal Fermentation Technology, Jiangnan University, Wuxi, China gcdu@jiangnan.edu.cn jchen@jiangnan.edu.cn.
Jiangnan University · CNGeorgia Institute of Technology · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Microbial production of propionic acid (PA), an important chemical building block used as a preservative and chemical intermediate, has gained increasing attention for its environmental friendliness over traditional petrochemical processes. In previous studies, we constructed a shuttle vector as a useful tool for engineering Propionibacterium jensenii, a potential candidate for efficient PA synthesis. In this study, we identified the key metabolites for PA synthesis in P. jensenii by examining the influence of metabolic intermediate addition on PA synthesis with glycerol as a carbon source under anaerobic conditions. We also further improved PA production via the overexpression of the identified corresponding enzymes, namely, glycerol dehydrogenase (GDH), malate dehydrogenase (MDH), and fumarate hydratase (FUM). Compared to those in wild-type P. jensenii, the activities of these enzymes in the engineered strains were 2.91- ± 0.17- to 8.12- ± 0.37-fold higher. The transcription levels of the corresponding enzymes in the engineered strains were 2.85- ± 0.19- to 8.07- ± 0.63-fold higher than those in the wild type. The coexpression of GDH and MDH increased the PA titer from 26.95 ± 1.21 g/liter in wild-type P. jensenii to 39.43 ± 1.90 g/liter in the engineered strains. This study identified the key metabolic nodes limiting PA overproduction in P. jensenii and further improved PA titers via the coexpression of GDH and MDH, making the engineered P. jensenii strain a potential industrial producer of PA.

Indexed as

Metabolic EngineeringAnaerobiosisCarbonFumarate HydrataseGene ExpressionGene Expression ProfilingGenetic VectorsGlycerolKlebsiella pneumoniaeMalate DehydrogenasePropionatesPropionibacteriumRecombinant ProteinsSugar Alcohol DehydrogenasesTranscription, GeneticCarbonFumarate HydrataseGlycerolglycerol dehydrogenaseMalate DehydrogenasePropionatespropionic acidRecombinant ProteinsSugar Alcohol Dehydrogenases

Identifiers

PMID25595755
PMCPMC4357950
OpenAlexW2148448906

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.