Evidence map›Paper›PMID 33741612›Full record

ArticleApplied and environmental microbiology2021

Production of l-Theanine by Escherichia coli in the Absence of Supplemental Ethylamine.

Ryota Hagihara, Shoto Ohno, Mikiro Hayashi, Kazuhiko Tabata, Hirofumi Endo

Open access · greenAbstract read
In one paragraph

Article in Applied and environmental microbiology, 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
1.4field-weighted citation impact, top 19% 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, 24 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 1 institution in 1 country.

Ryota HagiharaResearch & Innovation Center, Kyowa Hakko Bio Co., Ltd., Tsukuba, Ibaraki, Japan ryota.hagihara@kyowa-kirin.co.jp.ORCID 0000-0002-3245-2963
Shoto OhnoResearch & Innovation Center, Kyowa Hakko Bio Co., Ltd., Tsukuba, Ibaraki, Japan.
Mikiro HayashiResearch & Innovation Center, Kyowa Hakko Bio Co., Ltd., Tsukuba, Ibaraki, Japan.
Kazuhiko TabataResearch & Innovation Center, Kyowa Hakko Bio Co., Ltd., Tsukuba, Ibaraki, Japan.
Hirofumi EndoResearch & Innovation Center, Kyowa Hakko Bio Co., Ltd., Tsukuba, Ibaraki, Japan.
Kyowa Kirin (Japan) · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

l-Theanine is a nonproteinogenic amino acid present almost exclusively in tea plants and is beneficial for human health. For industrial production, l-theanine is enzymatically or chemically synthesized from glutamine/glutamate (or a glutamine/glutamate derivative) and ethylamine. Ethylamine is extremely flammable and toxic, which complicates and increases the cost of operational procedures. To solve these problems, we developed an artificial biosynthetic pathway to produce l-theanine in the absence of supplemental ethylamine. For this purpose, we identified and selected a novel transaminase (NCBI:protein accession number AAN70747) from

Indexed as

Biosynthetic PathwaysEscherichia coliEthylaminesFermentationGlutamatesethylamineEthylaminesGlutamatestheaninealanine decarboxylaseEscherichia colil-theaninetheanine hydrolaseγ-glutamylmethylamide synthetaseω-transaminase

Identifiers

PMID33741612
PMCPMC8208135
OpenAlexW3139134463

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.