团头鲂胰岛素样生长因子-Ⅰ基因克隆与分析

被引:7
作者
白俊杰
劳海华
叶星
李英华
罗建仁
机构
[1] 中国水产科学研究院珠江水产研究所农业部热带亚热带鱼类选育与养殖重点开放实验室
[2] 中国水产科学研究院珠江水
关键词
团头鲂; 胰岛素样生长因子-Ⅰ; 基因克隆;
D O I
暂无
中图分类号
Q785 [转化及克隆];
学科分类号
071007 ; 0836 ; 090102 ;
摘要
胰岛素样生长因子 Ⅰ (IGF Ⅰ )是一单链多肽。在脊椎动物中 ,IGF Ⅰ通过介导生长激素达到促进生长的作用。为研究鲤科鱼类IGF Ⅰ的结构功能及在水产养殖中的潜在应用前景 ,采用逆转录 -聚合酶链式反应 (RT PCR)方法 ,从团头鲂 (Megalobramaamblycephala)肝脏的总RNA中扩增出IGF ⅠcDNA。测定了该基因序列 ,推导其编码的蛋白质序列。克隆的cDNA序列编码包括信号肽和B、C、A、D、E 6个区域的 16 1个氨基酸。E区域分析结果表明所克隆的团头鲂IGF Ⅰ序列属于IGF ⅠEa - 2亚型。
引用
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页码:502 / 506
页数:5
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