蚕豆叶片下表皮ABA结合蛋白提取及分离条件的选择 |
| |
引用本文: | 吴忠义,贾文锁,张大鹏.蚕豆叶片下表皮ABA结合蛋白提取及分离条件的选择[J].Journal of Integrative Plant Biology,1999,41(6):2. |
| |
作者姓名: | 吴忠义 贾文锁 张大鹏 |
| |
作者单位: | :吴忠义 贾文锁 张大鹏 中国农业大学植物科技学院 北京 100094 |
| |
基金项目: | :国家自然科学基金资助项目(No.39670518和39730340). |
| |
摘 要: |
|
修稿时间: | 1998-07-15 |
Conditional Selection of the
Extraction and Isolation of ABA Binding Protein(s) from Vicia faba Abaxial Epiderm |
| |
Authors: | WU Zhong-Yi JIA Wen-Suo and ZHANG Da-Peng |
| |
Abstract: | The abaxial epiderm of Vicia faba L. was chosen to prepare the crude extract of ABA binding protein (ABA-BP). The activity of ABA-BP was dependent on different extraction methods. The specific binding capacity of ABA-BP extracted with 0.5% Triton X-100 (binding activity (B) = 0. 487 nmoL/g protein) was higher than that with extracted cold acetone (0. 325 nmol/g protein) or (NH4)2SO4(0. 223 nmol/ g protein). The activity duration of ABA-BP extracted with Triton X-100 (60% Bmax after 40 h) was longer than that with cold acetone (30% Bmax after 10 h). The ABA-BP activity of binding ABA was sensitive to pH change with an optimum pH of 6.5. The ABA-BP specific binding activity decreased quickly under high concentration of NaC1 ( > 300 mmoL/L), but increased 12% with 5 mmol/L KC1. Some divalent cations like Ca2+ and Mg2 + were required for enhancing the ABA-BP activity. These optimum conditions are primordial for ABA-BP purification. |
| |
Keywords: | ABA Binding proteins Reaction conditions Vicia faba abaxial epiderm |
|
| 点击此处可从《Journal of Integrative Plant Biology》浏览原始摘要信息 |
| 点击此处可从《Journal of Integrative Plant Biology》下载免费的PDF全文 |