Evidence map›Paper›PMID 32130469›Full record

ArticleApplied microbiology and biotechnology2020

Site-directed mutagenesis of coenzyme-independent carotenoid oxygenase CSO2 to enhance the enzymatic synthesis of vanillin.

Xueyan Yao, Yuemeng Lv, Huilei Yu, Hao Cao, Luyao Wang, Boting Wen, Tianyi Gu, Fengzhong Wang, Lichao Sun, Fengjiao Xin

Abstract read
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In one paragraph

Article in Applied microbiology and biotechnology, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.

0numbers the graph read from it
0cells of the map it votes in
7citing papers in PubMed
2.4field-weighted citation impact, top 13% 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

7 citing papers in PubMed, 26 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

10 authors at 2 institutions in 1 country.

Xueyan Yao *Laboratory of Food Enzyme Engineering, Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Beijing, 100193, People's Republic of China.
Yuemeng Lv *Laboratory of Food Enzyme Engineering, Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Beijing, 100193, People's Republic of China.
Huilei YuLaboratory of Biocatalysis and Synthetic Biotechnology, State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, China.
Hao CaoLaboratory of Food Enzyme Engineering, Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Beijing, 100193, People's Republic of China.
Luyao WangLaboratory of Food Enzyme Engineering, Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Beijing, 100193, People's Republic of China.
Boting WenLaboratory of Food Enzyme Engineering, Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Beijing, 100193, People's Republic of China.
Tianyi GuLaboratory of Food Enzyme Engineering, Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Beijing, 100193, People's Republic of China.
Fengzhong WangLaboratory of Food Enzyme Engineering, Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Beijing, 100193, People's Republic of China. wangfengzhong@caas.cn.
Lichao SunLaboratory of Food Enzyme Engineering, Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Beijing, 100193, People's Republic of China. sunlichao@caas.cn.
Fengjiao XinLaboratory of Food Enzyme Engineering, Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Beijing, 100193, People's Republic of China. xinfengjiao@caas.cn.ORCID http://orcid.org/0000-0002-8494-1419
Institute of Food Science and Technology · CNEast China University of Science and Technology · CN

Funding

National Natural Science Foundation of China 31700701State Key Laboratory of Bioreactor Engineering 2018OPEN13
6 · The paper itself

Abstract

Vanillin is a popular flavoring compound and an important food additive. Owing to the consumer preference for inexpensive natural aroma flavors, vanillin production through a biotechnological pathway has become of great interest and commercial value in recent years. In this study, an enzymatic synthetic system for vanillin using a coenzyme-independent decarboxylase (FDC) and oxygenase (CSO2) cascade was reconstituted and optimized. This system produces a slightly higher production yield (40.20%) than the largest yield reported for immobilized FDC and CSO2 (35.00%) with ferulic acid as a substrate. It was previously reported that the low catalytic activity and thermal instability of CSO2 restrict the overall productivity of vanillin. In present study, site-directed mutagenesis was applied to rate-limiting oxygenase CSO2 to generate positive mutants. The production yields of mutants A49P (58.44%) and Q390A (65.29%) were 1.45- and 1.62-fold that of CSO2 wild type, respectively. The potential mechanism for enhanced vanillin production using A49P involved increased thermostability and catalytic efficiency, while that using Q390A was probably associated with a better thermostable performance and increased catalytic efficiency resulting from a larger entrance channel.

Indexed as

Metabolic EngineeringMutagenesis, Site-DirectedBacillus pumilusBenzaldehydesCatalysisCaulobacterCoenzymesEscherichia coliHydrogen-Ion ConcentrationOxygenasesProtein BiosynthesisBenzaldehydescarotenoid oxygenaseCoenzymesOxygenasesvanillinAgrowasteCarotenoid cleavage oxygenaseFerulic acidSite mutagenesisVanillin

Identifiers

PMID32130469
OpenAlexW3009560202

What OpenQuestion holds

Textmetadata
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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.