The Eyes Absent Proteins: Unusual HAD Family Tyrosine Phosphatases.

The Eyes Absent Proteins: Unusual HAD Family Tyrosine Phosphatases.
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眼睛没有蛋白质:异常的酪氨酸磷酸酶。

DOI:
10.3390/ijms22083925
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发表时间:
2021-04-10
影响因子:
5.6
通讯作者:
Hegde RS
Hegde RS
中科院分区:
生物学2区
文献类型:
--
作者:
Roychoudhury K;Hegde RS

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在这里,我们回顾了卤酸脱卤酶(HAD)一类蛋白磷酸酶,特别强调了一组不寻常的酶,眼睛缺失(EYA)家族。EYA蛋白在结构和机械上被归类为HAD酶,然而,与其他HAD磷酸酶不同,它们是蛋白酪氨酸磷酸酶(PTPs)。此外,EYA蛋白在人类基因组的107种经典PTPs中是独一无二的,因为它们在去磷酸化反应中不使用半胱氨酸残基作为亲核试剂。我们将概述HAD磷酸酶的结构-功能,描述EYA家族的独特特征及其酪氨酸磷酸酶活性,简要总结已知的EYA蛋白底物和细胞功能,并推测EYA蛋白家族的进化起源。
Here, we review the haloacid dehalogenase (HAD) class of protein phosphatases, with a particular emphasis on an unusual group of enzymes, the eyes absent (EYA) family. EYA proteins have the unique distinction of being structurally and mechanistically classified as HAD enzymes, yet, unlike other HAD phosphatases, they are protein tyrosine phosphatases (PTPs). Further, the EYA proteins are unique among the 107 classical PTPs in the human genome because they do not use a Cysteine residue as a nucleophile in the dephosphorylation reaction. We will provide an overview of HAD phosphatase structure-function, describe unique features of the EYA family and their tyrosine phosphatase activity, provide a brief summary of the known substrates and cellular functions of the EYA proteins, and speculate about the evolutionary origins of the EYA family of proteins.
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