摘要
为了开发海参免疫基因,生产重组免疫因子蛋白,利用cDNA末端快速扩增技术(Rapid-amplification of cDNA ends,RACE)获得了刺参凝集素基因(Apostichopus japonicus Lectin,AJL)的编码区序列(Coding sequence,CDS),CDS的长度为492 bp,编码163个氨基酸,其中成熟肽由143个氨基酸组成。将成熟肽的基因克隆并连接至载体p ET-32a(+)中,成功构建了原核表达的重组体p ET-32a(+)-AJL,进一步将重组体转化至大肠杆菌感受态细胞BL21(DE3)中,经诱导表达、分离纯化,获得了融合表达蛋白。本研究结果为进一步研究重组刺参C型凝集素在刺参健康养殖上的应用奠定了基础。
The coding sequence(CDS) of a new C-type lectin(AJL) was cloned and characterized from the sea cucumber Apostichopus japonicus by rapid amplification of cDNA ends(RACE) to exploit recombinant protein of sea cucumber by expression of immune gene and recombinant immune factors.The CDS contains 492 bp with encoding a polypeptide of 163 amino acids.The mature peptide contains 143 amino acids.The recombinant p ET-32a(+)-AJL was constructed by linking the mature peptide gene sequences and p ET-32a(+) vector.After transforming the recombinant into Escherichia coli BL21(DE3),the fusion protein was obtained by induction,separation and purification.The findings provide the good foundation for further research and application of the recombinant lectin in sea cucumber culture.
出处
《大连海洋大学学报》
CAS
CSCD
北大核心
2015年第6期610-615,共6页
Journal of Dalian Ocean University
基金
辽宁省教育厅科研项目(L2014284)
大连市水产产业技术创新联合会科研项目(201400486)
大连海洋大学博士启动基金资助项目(HDYJ201407)
关键词
刺参
凝集素
基因克隆
原核表达
Apostichopus japonicus
lectin
gene cloning
prokaryotic expression