In vitro characterization of a nitro-forming oxygenase involved in 3-(trans-2’-aminocyclopropyl)alanine biosynthesis

Autor: Linlin Pang, Weijing Niu, Yuwei Duan, Liujie Huo, Aiying Li, Jiequn Wu, Youming Zhang, Xiaoying Bian, Guannan Zhong
Jazyk: angličtina
Rok vydání: 2022
Předmět:
Zdroj: Engineering Microbiology, Vol 2, Iss 1, Pp 100007- (2022)
Druh dokumentu: article
ISSN: 2667-3703
DOI: 10.1016/j.engmic.2021.100007
Popis: In vitro characterization experiments revealed the formations of 3-(trans-2’-aminocyclopropyl)alanine ((3-Acp)Ala) and 3-(trans-2’-nitrocyclopropyl)alanine ((3-Ncp)Ala) are originated via two homologous proteins, BelK and HrmI, which regioselectively catalyze the Nε-oxygenation of l-lysine. The two enzymes belong to the emerging heme-oxygenase-like diiron oxidase and oxygenase (HDO) superfamily and the catalytic center of BelK is validated by homology modeling and site-directed mutations. Based on the in vitro characterization, the biosynthetic pathways of (3-Acp)Ala and (3-Ncp)Ala are proposed.
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