中国畜牧兽医

• 生物技术 • 上一篇    下一篇

牦牛Toll样受体5基因的克隆及序列分析

陈亚冰1,兰道亮2,林宝山1,黄偲1,黄勇1,李键12   

  1. 1.西南民族大学生命科学与技术学院,四川成都  6100412.西南民族大学青藏高原研究院,四川成都  610041

  • 收稿日期:2014-01-20 出版日期:2014-07-20 发布日期:2014-08-21
  • 通讯作者: 李键,男,博士,教授,主要从事动物生殖调控研究。E-mail:lijian@swun.cn
  • 作者简介:陈亚冰(1989—),男,河南人,硕士生,研究方向:高原动物免疫分子机制。
  • 基金资助:

    西南民族大学研究生创新性项目(CX2014SZ75)。

Cloning and Sequence Analysis of TLR5 Gene from Yak

CHEN Ya-bing1, LAN Dao-liang2,LIN Bao-shan1,HUANG Cai1,HUANG Yong1,LI Jian1,2   

  1. 1.College of Life Science and Technology, Southwest University for Nationalities, Chengdu 610041, China; 2.College of Tibetan Plateau Research, Southwest University for Nationalities, Chengdu 610041, China)

  • Received:2014-01-20 Online:2014-07-20 Published:2014-08-21

摘要: 根据GenBank中已公布牛Toll样受体5(toll-like receptors 5,TLR5)基因序列,设计全长引物,并对所得序列进行生物信息学分析和预测。基因序列分析结果表明,克隆得到牦牛TLR5基因全长2582 bp,开放阅读框2577 bp,编码氨基酸858个,N端含有21个氨基酸组成的信号肽,分子质量为97.981 ku,理论等电点为4.85;蛋白预测结果表明,TLR5编码蛋白整体表现为亲水性;同源性分析结果表明,牦牛与野牦牛、黄牛、绵羊、山羊等物种具有较高的同源性,在系统发育树中距离最近,说明TLR5基因序列具有较高的保守性。牦牛TLR5基因序列的成功克隆为今后深入研究牦牛及高原动物抗病及免疫机制提供非常重要的理论基础。

关键词: 牦牛; Toll样受体5基因; 克隆; 序列分析

Abstract: This study aimed to investigate the characteristics of the TLR5 gene from yak. According to the published cattle TLR5 gene sequence in the GenBank, we designed special primers for the TLR5 gene. The results of sequence analysis showed that the length of the cloning TLR5 cDNA was 2582 bp,contained a complete 2577 bp open reading frame(ORF). It encoded a peptide of 858 amino acids whose N-terminal signal peptide contained 21 amino acids, and the protein had a calculated molecular weight of 97.981 ku and a PI of 4.85. The results of protein prediction showed that TLR5 protein perform as the hydrophilic. Sequence homology analysis showed that yak had higher homology with wild yak, cattle, sheep and goat. The results showed that TLR5 gene sequence was conserved in mammals. The successful cloning of TLR5 gene of yak provided important basis for the study of molecular mechanism of innate immune response.

Key words: font-size: 10.5pt; mso-bidi-font-family: 'Times New Roman'; mso-bidi-font-size: 12.0pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA" lang="EN-US">yakfont-size: 10.5pt; mso-bidi-font-family: 'Times New Roman'; mso-bidi-font-size: 12.0pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">;TLR5 genecloningsequence analysis