首页 | 本学科首页   官方微博 | 高级检索  
     

植物螯合肽合成酶的研究进展
引用本文:李安明,李德华,邓青云,汪宜宇. 植物螯合肽合成酶的研究进展[J]. 植物生理学通讯, 2011, 0(1): 27-36
作者姓名:李安明  李德华  邓青云  汪宜宇
作者单位:孝感学院生命科学技术学院;
基金项目:湖北省重点(培育)学科农业资源利用(0903); 湖北省自然科学基金项目(2005ABA083)
摘    要:植物螯合肽(phytochelatins,PCs)在植物解除重金属的毒性方面具有重要作用,其结构为(γ-Glu—Cys)n-Gly(n=2—11),它不是基因的编码产物,而是在植物螯合肽合成酶(phytochelatin synthase,PCS)的催化下以谷胱甘肽(glutathione,GSH)为底物合成的。PCS能够被金属离子激活,高度保守的N-端是催化结构域,而其C-端则是多变的。本文就PCS的结构,功能与催化机制以及PCS的最新研究进行了介绍。

关 键 词:植物螯合肽  植物螯合肽合成酶  植物螯合肽合成酶基因

Research Progress on Phytochelatin Synthase
LI An-Ming,LI De-Hua,DENG Qing-Yun,WANG Yi-Yu School of Life Sciences , Biotechnology,Xiaogan University,Xiaogan,Hubei ,China. Research Progress on Phytochelatin Synthase[J]. Plant Physiology Communications, 2011, 0(1): 27-36
Authors:LI An-Ming  LI De-Hua  DENG Qing-Yun  WANG Yi-Yu School of Life Sciences    Biotechnology  Xiaogan University  Xiaogan  Hubei   China
Affiliation:LI An-Ming,LI De-Hua,DENG Qing-Yun,WANG Yi-Yu School of Life Sciences and Biotechnology,Xiaogan University,Xiaogan,Hubei 432000,China
Abstract:Phytochelatins (PCs), with a general structure (γ-Glu-Cys)n-Gly (n=2-11), play an important role in heavy metal detoxification in plants. PCs are post-translationally synthesized directly from glutathione (GSH) by the enzyme phytochelatin synthase (PCS), of which the activity is dependent on the presence of heavy metals. The conserved N-terminal core domain of PCS functions as the catalytic domain, whereas the C-terminal region is highly variable. The review focused on the structure, functions and catalytic mechanisms of PCS, prospects were also included.
Keywords:phytochelatin (PC)  phytochelatin synthase (PCS)  phytochelatin synthase gene  
本文献已被 CNKI 维普 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号