Evidence map›Paper›PMID 25085487›Full record

ArticleApplied and environmental microbiology2014

Improvement of 2,3-butanediol yield in Klebsiella pneumoniae by deletion of the pyruvate formate-lyase gene.

Moo-Young Jung, Suman Mazumdar, Sang Heum Shin, Kap-Seok Yang, Jinwon Lee, Min-Kyu Oh

Open access · bronzeAbstract read
In one paragraph

Article in Applied and environmental microbiology, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed
3.4field-weighted citation impact, top 7% 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

20 citing papers in PubMed, 60 citations in OpenAlex.

  1. Article
  2. Review
  3. Review
  4. Establishing aMolecules (Basel, Switzerland) · 2022
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  7. Metabolic Engineering ofFrontiers in microbiology · 2021
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  8. Article
  9. Article
  10. Article
  11. Article
  12. Review
  13. Article
  14. Review
  15. EngineeringBiotechnology for biofuels · 2017
    Article
  16. Article
  17. 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

6 authors at 3 institutions in 1 country.

Moo-Young JungDepartment of Chemical and Biological Engineering, Korea University, Seoul, Republic of Korea.
Suman MazumdarDepartment of Chemical and Biological Engineering, Korea University, Seoul, Republic of Korea.
Sang Heum ShinMacrogen Inc., Seoul, Republic of Korea.
Kap-Seok YangMacrogen Inc., Seoul, Republic of Korea.
Jinwon LeeDepartment of Chemical and Biological Engineering, Sogang University, Seoul, Republic of Korea.
Min-Kyu OhDepartment of Chemical and Biological Engineering, Korea University, Seoul, Republic of Korea mkoh@korea.ac.kr.
Korea University · KRMacrogen (South Korea) · KRSogang University · KR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Klebsiella pneumoniae is considered a good host strain for the production of 2,3-butanediol, which is a promising platform chemical with various industrial applications. In this study, three genes, including those encoding glucosyltransferase (wabG), lactate dehydrogenase (ldhA), and pyruvate formate-lyase (pflB), were disrupted in K. pneumoniae to reduce both its pathogenic characteristics and the production of several by-products. In flask cultivation with minimal medium, the yield of 2,3-butanediol from rationally engineered K. pneumoniae (ΔwabG ΔldhA ΔpflB) reached 0.461 g/g glucose, which was 92.2% of the theoretical maximum, with a significant reduction in by-product formation. However, the growth rate of the pflB mutant was slightly reduced compared to that of its parental strain. Comparison with similar mutants of Escherichia coli suggested that the growth defect of pflB-deficient K. pneumoniae was caused by redox imbalance rather than reduced level of intracellular acetyl coenzyme A (acetyl-CoA). From an analysis of the transcriptome, it was confirmed that the removal of pflB from K. pneumoniae significantly repressed the expression of genes involved in the formate hydrogen lyase (FHL) system.

Indexed as

Gene Expression Regulation, BacterialMetabolic EngineeringTranscriptomeAcetyltransferasesBacterial ProteinsBiosynthetic PathwaysButylene GlycolsFermentationGene Expression Regulation, EnzymologicGene Knockout TechniquesGlucoseGlucosyltransferasesKlebsiella pneumoniaeL-Lactate DehydrogenaseSequence Deletion2,3-butylene glycolAcetyltransferasesBacterial ProteinsButylene Glycolsformate C-acetyltransferaseGlucoseGlucosyltransferasesL-Lactate Dehydrogenase

Identifiers

PMID25085487
PMCPMC4178695
OpenAlexW1963637384

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.