›› 2004, Vol. 47 ›› Issue (3): 412-416.

• 研究论文 • 上一篇    

粉纹夜蛾类Cry1Ac受体氨肽酶N cDNA片段的克隆与分析

蒋才富,刘凯于,彭蓉,彭建新,洪华珠   

  • 出版日期:2004-06-20 发布日期:2004-06-20

Cloning and analysis of two Cry1Ac receptor-like aminopeptidase N cDNA fragments from Trichoplusia ni (Hübner) cultured cell

JIANG Cai-Fu, LIU Kai-Yu, PENG Rong, PENG Jian-Xin, HONG Hua-Zhu*   

  • Online:2004-06-20 Published:2004-06-20
  • Contact: HONG Hua-Zhu

摘要: 设计简并引物,采用RT-PCR方法对粉纹夜蛾Trichoplusia ni (Hübner)细胞系BTI-TN5B-4的氨肽酶N (aminopeptidase N, APN)基因cDNA片段进行了克隆和序列分析, 通过两对引物扩增出了两种氨肽酶N基因的cDNA片段, 大小分别为188 bp 和564 bp,分别命名为AS188(GenBank登录号: CD809324)和AS564(GenBank登录号: CD809326)。对这两个片段推导的氨基酸序列进行同源性分析, 结果表明两者与已报道的鳞翅目昆虫中肠的Cry1Ac 毒素受体氨肽酶N有较高的同源性。

关键词: 粉纹夜蛾, 离体细胞, 氨肽酶N, 基因, 克隆, 序列分析

Abstract: Some aminopeptidase N (APNs) serve as Bacillus thuringiensis (Bt) Cry1Ac toxin receptor in the midguts of several lepidopteran insects. Two fragments of two different APN genes in BTI-TN-5B1-4 (a cloned cell line from Trichoplusia ni ovary) were amplified with two pairs of degenerate pri mers by RT-PCR, and the lengths of them were 188 bp and 564 bp,and named as 188(GenBank Accession: CD809324)and AS564 (GenBank Accession: CD809326)respectively. Deduced protein sequences were highly similar to that of several recept or APNs in insects, with sequence identities of 45%-47% for the shorter one and 61%-63% for the other.

Key words: Trichoplusia ni, cultured cell, aminopeptidase N, gene, clone, sequence analysis