Evidence map›Paper›PMID 27557730›Full record

ArticleMicrobial cell factories2016

Engineering Corynebacterium glutamicum for violacein hyper production.

Hongnian Sun, Dongdong Zhao, Bin Xiong, Chunzhi Zhang, Changhao Bi

Open access · goldAbstract read
In one paragraph

Article in Microbial cell factories, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers.

0numbers the graph read from it
0cells of the map it votes in
25citing papers in PubMed
4.4field-weighted citation impact, top 6% 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

25 citing papers in PubMed, 70 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.

Hongnian SunSchool of Biological Engineering, Dalian Polytechnic University, Dalian, 116034, People's Republic of China.
Dongdong ZhaoTianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin, 300308, People's Republic of China.
Bin XiongTianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin, 300308, People's Republic of China.
Chunzhi ZhangSchool of Biological Engineering, Dalian Polytechnic University, Dalian, 116034, People's Republic of China. zhangcz@dlpu.edu.cn.
Changhao BiTianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin, 300308, People's Republic of China. bi_ch@tib.cas.cn.ORCID http://orcid.org/0000-0002-1940-8511
Chinese Academy of Sciences · CNDalian Polytechnic University · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundCorynebacterium glutamicum was used as a metabolic engineering chassis for production of crude violacein (mixture of violacein and deoxyviolacein) due to Corynebacterium's GRAS status and advantages in tryptophan fermentation. The violacein is a commercially potential compound with various applications derived from L-tryptophan.

resultsCorynebacterium glutamicum ATCC 21850 that could produce 162.98 mg L(-1) tryptophan was employed as a novel host for metabolic engineering chassis. Heterologous vio operon from Chromobacterium violaceum was over-expressed in ATCC 21850 strain with constitutive promoter to have obtained 532 mg L(-1) violacein. Considering toxicity of violacein, vio operon was expressed with inducible promoter and 629 mg L(-1) violacein was obtained in batch culture. Due to the economical coding nature of vio operon, the compressed RBS of vio genes were replaced with complete strong C. glutamicum ones. And extended expression units were assembled to form a synthetic operon. With this strategy, 1116 mg L(-1) violacein in batch culture was achieved. Fermentation process was then optimized by studying induction time, induction concentration, culture composition and fermentation temperature. as a result, a titer of 5436 mg L(-1) and a productivity of 47 mg L(-1) h(-1) were achieved in 3 L bioreactor.

conclusionsWith metabolic engineering and fermentation optimization practice, C. glutamicum 21850 (pEC-C-vio1) was able to produce violacein with both titer and productivity at the highest level ever reported. Due to advantages of mature C. glutamicum fermentation industry, this work has built basis for commercial production of violacein.

Indexed as

FermentationBatch Cell Culture TechniquesBioreactorsChromobacteriumCorynebacterium glutamicumEscherichia coliIndolesIndustrial MicrobiologyMetabolic EngineeringOperonTryptophanIndolesTryptophanviolaceinCorynebacterium glutamicumL-TryptophanMetabolic engineeringViolacein

Identifiers

PMID27557730
PMCPMC4997675
OpenAlexW2512227670

What OpenQuestion holds

Textmetadata
LicenceCC BY
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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.