Thioesterase enzyme families: Functions, structures, and mechanisms
Thioesterase enzyme families: Functions, structures, and mechanisms
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DOI：
10.1002/pro.4263
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发表时间：
2022-01-04
期刊：
影响因子：
8
通讯作者：
Cantu, David C.
中科院分区：
文献类型：
--
作者：
Caswell, Benjamin T.;de Carvalho, Caio C.;Cantu, David C.
硫酯酶是在许多生物化学途径中，例如在脂肪酸合成中水解硫酯键的酶。本工作报告了已知的功能，结构和机制的更新硫酯酶家族，这是根据序列相似性分为35个家庭。每个硫酯酶家族基于至少一种实验表征的酶，并且大多数家族具有已经结晶并且其三级结构解析的酶。将硫酯酶分类到家族中允许预测三级结构并推断家族中所有序列的催化残基和机制，这是特别有用的，因为大多数已知蛋白质序列没有实验表征。系统发育分析的实验特征的硫酯酶的结构与两个主要的结构折叠揭示收敛和发散的进化。基于三级结构的叠加，预测催化残留物。
Thioesterases are enzymes that hydrolyze thioester bonds in numerous biochemical pathways, for example in fatty acid synthesis. This work reports known functions, structures, and mechanisms of updated thioesterase enzyme families, which are classified into 35 families based on sequence similarity. Each thioesterase family is based on at least one experimentally characterized enzyme, and most families have enzymes that have been crystallized and their tertiary structure resolved. Classifying thioesterases into families allows to predict tertiary structures and infer catalytic residues and mechanisms of all sequences in a family, which is particularly useful because the majority of known protein sequence have no experimental characterization. Phylogenetic analysis of experimentally characterized thioesterases that have structures with the two main structural folds reveal convergent and divergent evolution. Based on tertiary structure superimposition, catalytic residues are predicted.