利用RT-PCR技术从日本对虾中克隆到β-actin基因的cDNA,通过双酶切将其克隆到原核表达载体pGEX-4T-2中,转化大肠杆菌E.coli BL21感受态细胞,获得阳性克隆.4℃下IPTG诱导表达,Glutathione Sepharose 4B纯化后获得高纯度的β-actin蛋白.①
β-actin of Penaeus japonicus was cloned by RT-PCR and cloned into pGEX-4T-2 plasmid.This plasmid was used to transfer E.coli BL21.After induced with IPTG at 4 ℃,the fusion protein was purified with Glutathione Sepharose 4B.