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大连蛇岛蝮蛇类凝血酶基因克隆与表达研究
Cloning and expression of the cDNA of a thrombin-like enzyme from the venom of Gloydius shedaoensis
【摘要】 根据同源性设计引物,通过RT-PCR方法从大连蛇岛蝮蛇毒腺总RNA中合成扩增出类凝血酶基因,并由此推测出其相应的氨基酸序列.将该基因克隆到表达载体pPIC9K中,经电激转化后整合至毕氏酵母细胞中获得表达.该表达产物经两步柱层析后,进行聚丙烯酰胺凝胶电泳,获得单一条带,并表现较强的生色底物活性.
【Abstract】 Total RNAs were extracted from the venom gland of the snake Gloydius shedaoensis. The cDNA of defibrase was amplified by RTPCR. Assay of the nucleotide sequence of the cDNA allowed postulation of the complete amino acid sequence for Gloydius shedaoensis. The cDNA of defibrase was inserted into the vector pPIC 9K and expressed in Pichia pastoris, strain GS115.
【基金】 辽宁省科学技术基金资助项目(99305001);瑞典政府NUTEK基金资助项目.
- 【文献出处】 大连理工大学学报 ,Journal of Dalian University of Technology , 编辑部邮箱 ,2003年02期
- 【分类号】Q786
- 【被引频次】7
- 【下载频次】167