Identification of non-specific lipid transfer protein-1 as a calmodulin-binding protein in Arabidopsis

被引：48

作者：

Wang, Z ^{[1
]}

Xie, WQ ^{[1
]}

Chi, F ^{[1
]}

Li, CF ^{[1
]}

机构：

[1] Nankai Univ, Dept Biochem & Mol Biol, Tianjin 300071, Peoples R China

来源：

FEBS LETTERS | 2005年 / 579卷 / 07期

基金：

中国国家自然科学基金;

关键词：

non-specific lipid transfer protein-1; calmodulin; calmodulin-binding protein; CaMBP-10;

D O I：

10.1016/j.febslet.2005.02.024

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

Although non-specific lipid transfer pro ins (nsLTPs) are widely present in plants, their functions and regulations have not been fully understood. In this report, Arabidopsis nsLTP1 was cloned and expressed to investigate its binding to calmodulin (CaM). Gel overlay assays revealed that recombinant nsLTP1 bound to CaM in a calcium-independent manner. The association of nsLTP1 and CaM was corroborated using CaM-Sepharose beads to specifically isolate recombinant nsLTP1 from crude bacterial lysate. The CaM-binding site was mapped in nsLTP1 to the region of 69-80 amino acids. This region is highly conserved among plant nsLTPs, implicating that nsLTPs are a new family of CaM-binding proteins whose functions may be mediated by CaM signaling. (c) 2005 Federation of European Biochemical Societies. Published by Elsevier B.V. All rights reserved.

引用

页码：1683 / 1687

页数：5

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