›› 2010, Vol. 37 ›› Issue (10): 120-124.

• 遗传繁育 • 上一篇    下一篇

高原型藏绵羊KAP 基因单核苷酸多态性分析

王志有1,2, 祁全青3, 陈玉林1   

  1. (1.西北农林科技大学动物科技学院, 杨凌 712100;2.青海大学农牧学院, 西宁 810016;3.青海省三角城种羊场, 刚察 812300)
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2010-10-20 发布日期:2010-10-20
  • 通讯作者: 陈玉林

Analysis on Single Nucleotide Polymorphisms of Keratin-associated Proteins Gene in Plateau Tibetan Sheep

WANG Zhi-you1,2,QI Quan-qing3,CHEN Yu-lin1   

  1. (1.College of Animal Science and Technology,Northwest A&F University, Yangling 712100, China;2.Agriculture and Animal Husbandry College, Qinghai University, Xining 810016, China; 3.Sanjiaocheng Sheep Breeding Farm of Qinghai Province, Gangcha 812300, China)
  • Received:1900-01-01 Revised:1900-01-01 Online:2010-10-20 Published:2010-10-20
  • Contact: CHEN Yu-lin

摘要: 试验旨在寻找角蛋白辅助蛋白(keratin-associated proteins,KAP)基因与产毛性状相关的多态位点,为藏绵羊产毛性状的分子标记提供理论依据。采用PCR-SSCP技术对高原型藏绵羊角蛋白辅助蛋白基因家族中KAP 3.2、KAP 7基因部分序列和KAP 8基因外显子进行多态性分析。结果表明,3个基因座都存在多态性,均检测到AA、AB和BB 3种基因型。KAP 3.2基因以A等位基因为优势等位基因,AA基因型为优势等位基因型;KAP 7和KAP 8基因均以B等位基因为优势等位基因,BB基因型为优势等位基因型。高原型藏绵羊在KAP 3.2和KAP 8基因座达中度多态,而在KAP 7基因座为低度多态,在KAP 3.2和KAP 8位点上基因型频率处于Hardy-Weinberg非平衡状态。测序分析结果表明,KAP 3.2和KAP 8基因上分别存在1个C→T(271 bp)和1个T→C(1122 bp)的突变,均属于同义突变,KAP 7基因5′调控区存在1个T→C(102 bp)的突变。

关键词: 高原型藏绵羊; 角蛋白辅助蛋白基因; 单核苷酸多态性; PCR-SSCP

Abstract: This study was conducted to analyze the polymorphisms of keratin-associated proteins (KAP) gene and aid to provide a theoretical foundation for molecular marker of wool production performance in tibetan sheep. The polymorphisms of partial sequence of KAP 3.2, KAP 7 and the exon of KAP 8 in plateau tibetan sheep were analyzed using PCR-SSCP. The results showed that there were polymorphisms in three gene locus, and were detected three genotypes (AA, AB, BB). The frequency of A allele was obviously higher than that of B allele, and the frequency of AA genotype was higher than AB and BB at KAP 3.2 locus, while the frequency of B allele was higher than A allele, and the frequency of BB genotype was higher than AA and AB at other two gene loci. The polymorphism was medium in KAP 3.2 and KAP 8 gene loci, while low in KAP 7 locus. The frequencies of genotype were deviated from the Hardy-Weinberg disequilibrium at KAP 3.2 and KAP 8 gene loci. The sequencing results showed that there was one mutation at 271 bp of KAP 3.2 and 1122 bp of KAP 8 gene, respectively, and there was one mutation at 102 bp of upstream regulatory region of KAP 7 gene. 

Key words: plateau tibetan sheep; keratin-associated proteins gene; single nucleotide polymorphism; PCR-SSCP

中图分类号: