Evidence map›Paper›PMID 33991200›Full record

ArticleCurrent microbiology2021

Effects of Amino Acids and Overexpression of dapA Gene on the Production of ε-Poly-L-lysine by Streptomyces diastatochromogenes Strains.

Wenchao Li, Junge Lv, Tianyu Dong, Xinying Li, Xiaona Li, Zhilei Tan, Shiru Jia

Abstract read
PubMed Publisher
In one paragraph

Article in Current microbiology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed
1.5field-weighted citation impact, top 18% 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

12 citing papers in PubMed, 25 citations in OpenAlex.

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  12. Epsilon-poly-L-lysine: Recent Advances in Biomanufacturing and Applications.Frontiers in bioengineering and biotechnology · 2021
    Review
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 1 institution in 1 country.

Wenchao LiState Key Laboratory of Food Nutrition and Safety, Tianjin University of Science and Technology, Tianjin, 300457, PR China.
Junge LvState Key Laboratory of Food Nutrition and Safety, Tianjin University of Science and Technology, Tianjin, 300457, PR China.
Tianyu DongState Key Laboratory of Food Nutrition and Safety, Tianjin University of Science and Technology, Tianjin, 300457, PR China.
Xinying LiState Key Laboratory of Food Nutrition and Safety, Tianjin University of Science and Technology, Tianjin, 300457, PR China.
Xiaona LiState Key Laboratory of Food Nutrition and Safety, Tianjin University of Science and Technology, Tianjin, 300457, PR China.
Zhilei TanState Key Laboratory of Food Nutrition and Safety, Tianjin University of Science and Technology, Tianjin, 300457, PR China. tanzhilei@tust.edu.cn.
Shiru JiaState Key Laboratory of Food Nutrition and Safety, Tianjin University of Science and Technology, Tianjin, 300457, PR China. jiashiru@tust.edu.cn.
Tianjin University of Science and Technology · CN

Funding

National Key R and D Program of China NO. 2018YFD0400205National Natural Fund General Program of China NO. 31771952Open Project Program of State Key Laboratory of Food Nutrition and Safety No. SKLFNS-KF-201911
6 · The paper itself

Abstract

In this study, the strain Streptomyces diastatochromogenes 6#-7, which efficiently synthesizes ε-Poly-L-lysine, was studied and the effects of 18 amino acids and overexpression of dapA gene on the fermentation efficiency of ε-PL by S. diastatochromogenes were investigated. It was shown that L-proline, L-lysine, L-isoleucine, and L-threonine could promote the production of ε-PL. Moreover, the overexpression of the dihydrodipicolinate synthase gene (dapA) helped improve the fermentation performance of S. diastatochromogenes. The maximum ε-PL yield of the overexpressing strain (S. diastatochromogenes 12#-2) increased by 17.5% compared with the original strain in 500 mL shake flask. When the fermentation was conducted in a 5-L fermenter, the fermentation duration was extended by 48 h, and ε-PL yield reached 30.54 g/L, which was a 19.8% increase compared to the original strain. The results of this study offered a promising approach to augment the production of ε-PL from Streptomyces, thus paving the way to reduce the cost of product ε-PL and enhance the fermentation efficiency of ε-PL production.

Indexed as

PolylysineStreptomycesAmino AcidsFermentationAmino AcidsPolylysine

Identifiers

PMID33991200
OpenAlexW3160123402

What OpenQuestion holds

Textmetadata
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.