Thermal Bifunctionality of Bacterial Phenylalanine Aminomutase and Ammonia Lyase Enzymes

被引:35
作者
Chesters, Christopher [1 ,2 ]
Wilding, Matthew [1 ,2 ]
Goodall, Mark [1 ,2 ]
Micklefield, Jason [1 ,2 ]
机构
[1] Univ Manchester, Sch Chem, Manchester M1 7DN, Lancs, England
[2] Univ Manchester, Manchester Interdisciplinary Bioctr, Manchester M1 7DN, Lancs, England
基金
英国生物技术与生命科学研究理事会;
关键词
aminomutases; ammonia lyases; enzymes; enzyme catalysis; ss-amino acids; 4-METHYLIDENEIMIDAZOLE-5-ONE-CONTAINING TYROSINE AMINOMUTASE; VISCOSITY DEPENDENCE; CRYSTAL-STRUCTURE; ACTIVE-SITE; MECHANISM; PROMISCUITY; IMPROVEMENT; SUBSTRATE;
D O I
10.1002/anie.201200669
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Enzymatic thermal switch: The bacterial 4-methylideneimidazol-5-one (MIO) dependent enzymes AdmH and EncP are shown to display remarkable thermal bifunctionality: they act as mutases (blue graph) at lower temperatures but with lyase (red graph) activity predominant at higher temperatures. This temperature-dependent switch in enzyme class also explains how these two similar enzymes can fulfill different catalytic functions in secondary metabolisms. Copyright © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
引用
收藏
页码:4344 / 4348
页数:5
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