Evidence map›Paper›PMID 21110891›Full record

ArticleMicrobial cell factories2010

Biosynthesis of chiral 3-hydroxyvalerate from single propionate-unrelated carbon sources in metabolically engineered E. coli.

Hsien-Chung Tseng, Catey L Harwell, Collin H Martin, Kristala L J Prather

Abstract read
In one paragraph

Article in Microbial cell factories, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

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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

19 citing papers in PubMed.

  1. Article
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  6. Blended nexus molecules promote COScience advances · 2024
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  7. Reverse β-oxidation pathways for efficient chemical production.Journal of industrial microbiology & biotechnology · 2022
    Article
  8. Review
  9. Article
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  15. Tailored fatty acid synthesis via dynamic control of fatty acid elongation.Proceedings of the National Academy of Sciences of the United States of America · 2013
    Article
  16. Article
  17. Controlled biosynthesis of odd-chain fuels and chemicals via engineered modular metabolic pathways.Proceedings of the National Academy of Sciences of the United States of America · 2012
    Article
  18. Article
  19. 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

4 authors.

Hsien-Chung TsengDepartment of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.
Catey L Harwell
Collin H Martin
Kristala L J Prather

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe ability to synthesize chiral building block molecules with high optical purity is of considerable importance to the fine chemical and pharmaceutical industries. Production of one such compound, 3-hydroxyvalerate (3HV), has previously been studied with respect to the in vivo or in vitro enzymatic depolymerization of biologically-derived co-polymers of poly(3-hydroxybutyrate-co-3-hydroxyvalerate). However, production of this biopolymeric precursor typically necessitates the supplementation of a secondary carbon source (e.g., propionate) into the culture medium. In addition, previous approaches for producing 3HV have not focused on its enantiopure synthesis, and thus suffer from increased costs for product purification.

resultsHere, we report the selective biosynthesis of each 3HV stereoisomer from a single, renewable carbon source using synthetic metabolic pathways in recombinant strains of Escherichia coli. The product chirality was controlled by utilizing two reductases of opposing stereoselectivity. Improvement of the biosynthetic pathway activity and host background was carried out to elevate both the 3HV titers and 3HV/3HB ratios. Overall, shake-flask titers as high as 0.31 g/L and 0.50 g/L of (S)-3HV and (R)-3HV, respectively, were achieved in glucose-fed cultures, whereas glycerol-fed cultures yielded up to 0.19 g/L and 0.96 g/L of (S)-3HV and (R)-3HV, respectively.

conclusionsOur work represents the first report of direct microbial production of enantiomerically pure 3HV from a single carbon source. Continued engineering of host strains and pathway enzymes will ultimately lead to more economical production of chiral 3HV.

Indexed as

3-Hydroxybutyric AcidButyratesCarbonEscherichia coliGenetic EngineeringGlucoseGlycerolPentanoic AcidsPropionatesStereoisomerismThreonine3-Hydroxybutyric Acidalpha-ketobutyric acidbeta-hydroxyvaleric acidButyratesCarbonGlucoseGlycerolPentanoic AcidsPropionatesThreonine

Identifiers

PMID21110891
PMCPMC3000843

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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.