植物羧酸酯酶的结构、表达调控及生物功能研究进展

doi:10.16035/j.issn.1001-7283.2018.03.005

摘要/Abstract

摘要：

羧酸酯酶（carboxylesterase,CXE）是一类广泛存在于动植物及微生物中具有α/β折叠水解酶活性的水解酶类。蛋白序列比对分析表明植物CXE具有一个催化活性的丝氨酸保守结构域（GXSXG基序）,结合并水解各种酯类化合物。在植物中,其家族不同成员在组织中的表达存在差异,并受乙烯、病菌等因素的诱导,在除草剂活性物质激活、植物激素信号物质代谢以及生物胁迫等过程中发挥重要的生物学功能。本文对植物CXE家族成员的结构、表达调控和生物学功能进行综述,并讨论了未来可能的研究方向,为CXE功能的深入研究提供参考。

关键词: 羧酸酯酶, 丝氨酸水解酶, 生物胁迫, 除草剂

Abstract:

Carboxylesterases belong to the α/β-hydrolase fold superfamily, which are widely found in microorganism, flora and fauna. Protein sequences blast analysis shows that the plant CXE family contains a conserved catalytic active site of a serine domain (GXSXG motif), which bind and hydrolyze various ester compounds. The expression of different members of CXE family exhibit divergences, and can be induced by ethylene and pathogen. The function of CXE is mainly related in bioactivation of herbicide, bioactivation of plant signalling compounds and biotic stress response. In this paper, we summarized the recent research progresses on structural characteristics, expression and functions, discussed the future directions of studies on the CXE and provided suggestions for further research of plant CXE.

Key words: Carboxylesterase, Serine hydrolase, Biotic stress, Herbicide

刘建光,赵贵元,赵俊丽,耿昭,王永强,张寒霜. 植物羧酸酯酶的结构、表达调控及生物功能研究进展[J]. 作物杂志, 2018 (3): 32–36

Jianguang Liu,Guiyuan Zhao,Junli Zhao,Zhao Geng,Yongqiang Wang,Hanshuang Zhang. Progress in the Structure, Expression and Function of Plant Carboxylesterases[J]. Crops, 2018(3): 32–36

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