Evidence map›Paper›PMID 33964901›Full record

ArticleMicrobial cell factories2021

Genetic engineering of the precursor supply pathway for the overproduction of the nC

Fangxiang Hu, Weijie Cai, Junzhang Lin, Weidong Wang, Shuang Li

Open access · goldAbstract read
In one paragraph

Article in Microbial cell factories, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.

0numbers the graph read from it
0cells of the map it votes in
8citing papers in PubMed
0.8field-weighted citation impact, top 34% 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

8 citing papers in PubMed, 33 citations in OpenAlex.

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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

5 authors at 2 institutions in 1 country.

Fangxiang HuCollege of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, 211816, PR China.ORCID http://orcid.org/0000-0002-7641-9882
Weijie CaiCollege of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, 211816, PR China.
Junzhang LinOil Production Research Institute, Shengli Oil Field Ltd. Co. Sinopec, Dongying, 257000, PR China.
Weidong WangOil Production Research Institute, Shengli Oil Field Ltd. Co. Sinopec, Dongying, 257000, PR China.
Shuang LiCollege of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, 211816, PR China. lishuang@njtech.edu.cn.
Nanjing Tech University · CNSinopec (China) · CN

Funding

National Natural Science Foundation of China 21576133
6 · The paper itself

Abstract

backgroundSurfactin, a representative biosurfactant of lipopeptide mainly produced by Bacillus subtilis, consists of a cyclic heptapeptide linked to a β-hydroxy fatty acid chain. The functional activity of surfactin is closely related to the length and isomerism of the fatty acid chain.

resultsIn this study, the fatty acid precursor supply pathway in Bacillus subtilis 168 for surfactin production was strengthened through two steps. Firstly, pathways competing for the precursors were eliminated with inactivation of pps and pks. Secondly, the plant medium-chain acyl-carrier protein (ACP) thioesterase (BTE) from Umbellularia californica was overexpressed. As a result, the surfactin titer after 24 h of cultivation improved by 34%, and the production rate increased from 0.112 to 0.177 g/L/h. The isoforms identified by RP-HPLC and GC-MS showed that the proportion of nC

conclusionThe obtained results identified that enhancing the supply of fatty acid precursor is very essential for the synthesis of surfactin. At the same time, this study also proved that thioesterase BTE can promote the production of nC

Indexed as

Bacillus subtilisFatty AcidsGas Chromatography-Mass SpectrometryGenetic EngineeringLipopeptidesMetabolic Networks and PathwaysPeptides, CyclicProtein IsoformsFatty AcidsLipopeptidesPeptides, CyclicProtein Isoformssurfactin peptideBacillus subtilisLipopeptideMicrobial Enhanced Oil Recovery (MEOR)SurfactinThioesterase

Identifiers

PMID33964901
PMCPMC8105922
OpenAlexW3163181598

What OpenQuestion holds

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LicenceCC BY
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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.