›› 2010, Vol. 37 ›› Issue (4): 66-70.

• 生物技术 • 上一篇    下一篇

猪肺巨噬细胞FcγR Ⅲ受体基因的克隆与序列分析

徐红运,夏平安,王中明,张凤华,卢高峰,刘玉松,崔保安   

  1. (河南农业大学牧医工程学院, 郑州 450002)
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2010-04-20 发布日期:2010-04-20
  • 通讯作者: 夏平安

Cloning and Sequence Analysis of cDNA Encoding Porcine Alveolar Macrophages FcγR

XU Hong-yun,XIA Ping-an,WANG Zhong-ming,ZHANG Feng-hua,LU Gao-feng,LIU Yu-song,CUI Bao-an   

  1. (The College of Animal Husbamdry and Veterimary,Henan Agricultural University,Zhengzhou 450002, China)
  • Received:1900-01-01 Revised:1900-01-01 Online:2010-04-20 Published:2010-04-20
  • Contact: XIA Ping-an

摘要: 为研究猪肺巨噬细胞FcγR Ⅲ的生物学功能,本研究应用RT-PCR技术从猪肺巨噬细胞总RNA中克隆出猪FcγR Ⅲ的cDNA序列,并对其进行了分析。结果表明,克隆到的序列长820 bp,包含有1个771 bp完整开放阅读框(ORF),与GenBank中登录的猪FcγR Ⅲ序列(AF237453)的核苷酸同源性为99.9%;与人、牛、马、绵羊、猕猴、狗、猫、小鼠氨基酸同源性分别为61.6%、62.9%、55.3%、62.2%、63.0%、59.0%、61.8%和53.2%;蛋白质分子结构预测结果表明,该分子由信号肽(20个氨基酸)、胞外区(185个氨基酸)、跨膜区(23个氨基酸)和胞内区(28个氨基酸)组成,在胞外区存在2个Ig样结构域。猪肺巨噬细胞FcγR Ⅲ基因的成功克隆,为进一步研究其结构与功能奠定基础。

关键词: 猪肺巨噬细胞FcγRⅢ; 基因克隆; 序列分析

Abstract: To study the biological function of porcine alveolar macrophages FcγRⅢ,we cloned cDNA of FcγR Ⅲ gene from total RNA of porcine alveolar macrophages (PAM) by reverse tmnscription-polymerase chain reaction (RT-PCR) and analysised its sequence in this study. Sequence analysis showed that the porcine FcγR Ⅲ cDNA cloned was 820 bp in length which contained 771 bp open reading frame(ORF).The nucleotide sequence of porcine FcγR Ⅲ shared 99.9% homology with the published sequence(AF237453).The comparison of the deduced amino acids sequence of porcine FcγRⅢ with those of human,cattle,horse,sheep,monkey,dog,cat amd mouse showed that the amino acids homology similarity were 61.6%,62.9%,55.3%,62.2%, 63.0%,59.0%,61.8% and 53.2% respectively.The analysis of deduced amino acids sequence indicated that FcγRⅢ was a typical type I transmembrane protein with two Ig-like domains in extracellular region.The clone of porcine alveolar macrophages FcγR Ⅲ lay the foundation for further study of structure and function of porcine alveolar macrophages FcγRⅢ.

Key words: porcine alveolar macrophages FcγRⅢ; cloning; sequence analysis

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