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A p34 ^( cdc2) _like Protein Is Localized in Both Nuclei and Cytoplasm of Physarum polycephalum

多头绒泡菌类p34^(cdc2) 蛋白的定位研究(英文)
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摘要 目前关于动物和酵母细胞中p34cdc2 的定位研究结果尚存在分歧 ,而关于该蛋白在植物细胞中的定位尚不清楚。以多头绒泡菌 (Physarumpolycephalum)S期、G2早期、G2中期、G2晚期、前期、中期和后末期的原质团和细胞核为材料进行免疫印迹 ,发现原质团和细胞核都含有一种分子量约 34kD的类p34cdc2 蛋白 ,该蛋白在原质团和细胞核中的含量在整个细胞周期进程中基本保持稳定。以抗p34cdc2 单克隆抗体为探针的免疫电镜结果显示 ,类p34cdc2 蛋白既分布于细胞核也分布于细胞质中 ,在细胞核中主要与染色体和核仁结合。经抗p34cdc2 单克隆抗体处理后 ,多头绒泡菌的有丝分裂启始迟滞约 2h。结果表明 ,多头绒泡菌类p34cdc2 蛋白存在于细胞核和细胞质中 ,与细胞有丝分裂密切相关 ,其含量在细胞周期进程中基本保持稳定。
出处 《Acta Botanica Sinica》 CSCD 2002年第8期999-1003,共5页 Acta Botanica Sinica(植物学报:英文版)
基金 国家自然科学基金 (3 9870 3 89) 教育部跨世纪人才基金。~~
关键词 p34 cdc2 _like protein Physarum polycephalum Western blot immunoelectron microscope antibody treatment 多头绒泡菌类 p34cdc2蛋白 定位研究 免疫印迹 免疫电镜 抗体处理
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