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钙调素通过HSP70调控热激转录因子的活性
Calmodulin Regulates Activity of HSF Through HSP70
【摘要】 凝胶阻滞分析结果显示,70kD的热激蛋白(HSP70)抑制热激转录因子(HSF)的DNA结合活性;利用免疫共沉淀法在细胞提取液中检测到了CaMHSP70复合物的存在,并且热激后CaMHSP70复合物含量增加.表明钙调素(CaM)调控HSF活性可能是通过与HSP70结合起作用.
【Abstract】 With gel mobility shift assay,it was found that DNA-binding activity of HSF was repressed by HSP70.It was also found that the CaM-HSP70 complex was existed in cytoplasmic extract by co-immunoprecipetation experiment,and concentration of CaM-HSP70 complex increased after heat shock.The results provide proofs for regulation of CaM on activity of HSF likely through binding to HSP70.Maize was used as experimental material.
【关键词】 钙调素;
HSP70;
热激转录因子;
【Key words】 calcium-calmodulin; 70 kD heat shock protein; heat shock transcription factor;
【Key words】 calcium-calmodulin; 70 kD heat shock protein; heat shock transcription factor;
【基金】 国家重点基础研究专项经费资助项目(G1999011700);国家自然科学基金资助项目(30270796);河北省自然科学基金资助项目(301447)
- 【文献出处】 河北师范大学学报 , 编辑部邮箱 ,2004年04期
- 【分类号】Q57
- 【被引频次】6
- 【下载频次】276