Evidence map›Paper›PMID 34358565›Full record

ArticleThe Journal of biological chemistry2021

Catalytic mechanism of ancestral L-lysine oxidase assigned by sequence data mining.

Sayaka Sugiura, Shogo Nakano, Masazumi Niwa, Fumihito Hasebe, Daisuke Matsui, Sohei Ito

Open access · goldAbstract read
In one paragraph

Article in The Journal of biological chemistry, 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
2.2field-weighted citation impact, top 14% 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, 20 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

6 authors at 3 institutions in 1 country.

Sayaka SugiuraGraduate Division of Nutritional and Environmental Sciences, University of Shizuoka, Suruga-ku, Shizuoka, Japan.
Shogo NakanoGraduate Division of Nutritional and Environmental Sciences, University of Shizuoka, Suruga-ku, Shizuoka, Japan; PREST, Japan Science and Technology Agency, Kawaguchi, Japan. Electronic address: snakano@u-shizuoka-ken.ac.jp.
Masazumi NiwaGraduate Division of Nutritional and Environmental Sciences, University of Shizuoka, Suruga-ku, Shizuoka, Japan.
Fumihito HasebeGraduate Division of Nutritional and Environmental Sciences, University of Shizuoka, Suruga-ku, Shizuoka, Japan.
Daisuke MatsuiDepartment of Biotechnology, College of Life Sciences, Ritsumeikan University, Kusatsu, Shiga, Japan.
Sohei ItoGraduate Division of Nutritional and Environmental Sciences, University of Shizuoka, Suruga-ku, Shizuoka, Japan.
University of Shizuoka · JPRitsumeikan University · JPShizuoka University · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

A large number of protein sequences are registered in public databases such as PubMed. Functionally uncharacterized enzymes are included in these databases, some of which likely have potential for industrial applications. However, assignment of the enzymes remained difficult tasks for now. In this study, we assigned a total of 28 original sequences to uncharacterized enzymes in the FAD-dependent oxidase family expressed in some species of bacteria including Chryseobacterium, Flavobacterium, and Pedobactor. Progenitor sequence of the assigned 28 sequences was generated by ancestral sequence reconstruction, and the generated sequence exhibited L-lysine oxidase activity; thus, we named the enzyme AncLLysO. Crystal structures of ligand-free and ligand-bound forms of AncLLysO were determined, indicating that the enzyme recognizes L-Lys by hydrogen bond formation with R76 and E383. The binding of L-Lys to AncLLysO induced dynamic structural change at a plug loop formed by residues 251 to 254. Biochemical assays of AncLLysO variants revealed the functional importance of these substrate recognition residues and the plug loop. R76A and E383D variants were also observed to lose their activity, and the k

Indexed as

Amino Acid OxidoreductasesBacteriaBacterial ProteinsBinding SitesCatalysisData MiningHydrogen BondingKineticsLysineModels, MolecularAmino Acid OxidoreductasesBacterial ProteinsL-lysine oxidaseLysineancestral sequence reconstructioncrystal structureenzymatic mechanismL-amino acid oxidase

Identifiers

PMID34358565
PMCPMC8405998
OpenAlexW3190865283

What OpenQuestion holds

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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.