Evidence map›Paper›PMID 21125278›Full record

ArticleCurrent microbiology2011

Effect of ferrous ion on ε-poly-L-lysine biosynthesis by Streptomyces diastatochromogenes CGMCC3145.

Guoliang Wang, Shiru Jia, Tian Wang, Liye Chen, Qingchao Song, Weina Li

Abstract read
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In one paragraph

Article in Current microbiology, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.

0numbers the graph read from it
0cells of the map it votes in
6citing papers in PubMed
0.4field-weighted citation impact, top 37% 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

6 citing papers in PubMed, 18 citations in OpenAlex.

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  4. Review
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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

6 authors at 2 institutions in 1 country.

Guoliang WangKey Laboratory of Industrial Microbiology, Ministry of Education, Tianjin University of Science and Technology, No. 29, 13th Avenue, Tianjin Economic-Technological Development Area, Tianjin, 300457, China.
Shiru Jia
Tian Wang
Liye Chen
Qingchao Song
Weina Li
Tianjin Economic-Technological Development Area · CNTianjin University of Science and Technology · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

ε-Poly-L-lysine (ε-PL) is known as an amino acid homopolymer occurring in nature. It is mainly produced by bacteria belonging to the family of Streptomycetaceae. In this study, the effect of ferrous ion on the metabolic pathway such as key enzyme activities and substrate consumptions relating to ε-PL production were investigated. When 0.1 mM Fe(2+) was supplemented into the culture medium of Streptomyces diastatochromogenes CGMCC3145 for 72 h of cultivation, the yield of ε-PL and biomass were enhanced by 29.2 and 41.9%, respectively, compared with those of the control. Synchronously, consumptions of glucose, ammoniac nitrogen, and phosphorus were increased by 50, 67.6, and 35.7%, respectively. The enzyme activity measurements showed that the specific activities of proteinase, phosphatase, glutamate dehydrogenase, and aspartate aminotransferase activities were improved for 2.32, 3.68, 1.72, and 1.50 folds, respectively, however, aspartokinase and ε-PL synthetase were hardly affected by ferrous ion. These results manifested that Fe(2+) can improve the yield of ε-PL by promoting aspartate production, and the aspartate was further catalyzed to produce much more L-lysine, precursor for ε-PL biosynthesis.

Indexed as

AmmoniaCulture MediaEnzymesFerrous CompoundsGlucoseIonsPhosphorusPolylysineStreptomycesAmmoniaCulture MediaEnzymesFerrous CompoundsGlucoseIonsPhosphorusPolylysine

Identifiers

PMID21125278
OpenAlexW2050555583

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.