Evidence map›Paper›PMID 31699116›Full record

ArticleMicrobial cell factories2019

High production of valencene in Saccharomyces cerevisiae through metabolic engineering.

Hefeng Chen, Chaoyi Zhu, Muzi Zhu, Jinghui Xiong, Hao Ma, Min Zhuo, Shuang Li

Open access · goldAbstract read
In one paragraph

Article in Microbial cell factories, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed
3.3field-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

21 citing papers in PubMed, 67 citations in OpenAlex.

  1. Highly efficient production ofSynthetic and systems biotechnology · 2027
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  14. Metabolic engineering ofMetabolic engineering communications · 2021
    Article
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  19. Frontiers in microbiology · 2020
    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

7 authors at 2 institutions in 1 country.

Hefeng ChenSchool of Biology and Biological Engineering, South China University of Technology, Higher Education Mega Center, Guangzhou, 510006, China.
Chaoyi ZhuSchool of Biology and Biological Engineering, South China University of Technology, Higher Education Mega Center, Guangzhou, 510006, China.
Muzi ZhuState Key Laboratory of Applied Microbiology Southern China, Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Guangdong Institute of Microbiology, Guangzhou, 510070, China.
Jinghui XiongSchool of Biology and Biological Engineering, South China University of Technology, Higher Education Mega Center, Guangzhou, 510006, China.
Hao MaSchool of Biology and Biological Engineering, South China University of Technology, Higher Education Mega Center, Guangzhou, 510006, China.
Min ZhuoSchool of Biology and Biological Engineering, South China University of Technology, Higher Education Mega Center, Guangzhou, 510006, China.
Shuang LiSchool of Biology and Biological Engineering, South China University of Technology, Higher Education Mega Center, Guangzhou, 510006, China. shuangli@scut.edu.cn.ORCID http://orcid.org/0000-0001-6595-6175
South China University of Technology · CNGuangdong Academy of Sciences · CN

Funding

National Key R&D Program of China 2018YFA0901504Natural Science Foundation of China 21878104Natural Science Foundation of China 31800063Project on the Integration of Industry, Education, and Research of Guangzhou, China 201704020183Project on the Integration of Industry, Education, and Research of Guangzhou, China 201903010086the Science and Technology Planning Project of Guangdong Province, China 2017A010105019
6 · The paper itself

Abstract

backgroundThe biological synthesis of high value compounds in industry through metabolically engineered microorganism factories has received increasing attention in recent years. Valencene is a high value ingredient in the flavor and fragrance industry, but the low concentration in nature and high cost of extraction limits its application. Saccharomyces cerevisiae, generally recognized as safe, is one of the most commonly used gene expression hosts. Construction of S. cerevisiae cell factory to achieve high production of valencene will be attractive.

resultsValencene was successfully biosynthesized after introducing valencene synthase into S. cerevisiae BJ5464. A significant increase in valencene yield was observed after down-regulation or knock-out of squalene synthesis and other inhibiting factors (such as erg9, rox1) in mevalonate (MVA) pathway using a recyclable CRISPR/Cas9 system constructed in this study through the introduction of Cre/loxP. To increase the supplement of the precursor farnesyl pyrophosphate (FPP), all the genes of FPP upstream in MVA pathway were overexpressed in yeast genome. Furthermore, valencene expression cassettes containing different promoters and terminators were compared, and P

conclusionsThis study achieved high production of valencene in S. cerevisiae through metabolic engineering and optimization of expression cassette, providing good example of microbial overproduction of valuable chemical products. The construction of recyclable plasmid was useful for multiple gene editing as well.

Indexed as

Saccharomyces cerevisiaeCRISPR-Cas SystemsMetabolic EngineeringOrganisms, Genetically ModifiedPlasmidsSesquiterpenesSesquiterpenesvalenceneExpression cassetteMetabolic engineeringRecyclable plasmidSaccharomyces cerevisiaeSynthetic biologyValencene

Identifiers

PMID31699116
PMCPMC6839068
OpenAlexW2983019479

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.