畜牧兽医学报 ›› 2006, Vol. 37 ›› Issue (1): 18-22.

• 遗传繁育 • 上一篇    下一篇

一个山羊Ⅰ型毛角蛋白基因的序列及其在皮肤中的表达

尹 俊;李金泉;张燕军;李长青;赖双英;张文广;高爱琴;菊林花   

  1. 1.内蒙古农业大学生物工程学院, 呼和浩特 010018;2.内蒙古农业大学动物科学与医学学院, 呼和浩特 010018
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2006-01-25 发布日期:2006-01-25

Sequence Analysis and Expression of a TypeⅠHair Keratin Gene in Goat Skin

YIN Jun;LI Jin-quan;ZHANG Yan-jun;LI Chang-qing;LAI Shuang-ying;ZHANG Wen-guang;GAO Ai-qin;JU Lin-hua
  

  1. 1.College of Biotechnology, Inner Mongolia Agricultural University,Huhhot 010018,China; 2.College of Animal Science and Medical Science, Inner Mongolia Agricultural University,Huhhot 010018, China
  • Received:1900-01-01 Revised:1900-01-01 Online:2006-01-25 Published:2006-01-25

摘要: 角蛋白家族包含表皮软角蛋白和毛发硬角蛋白,可以分为酸性Ⅰ型和碱性或中性的Ⅱ型角蛋白亚家族。从构建的成年山羊皮肤cDNA文库和ESTs分析中发现了和与绵羊羊毛角蛋白8C1和人Ⅰ型毛发角蛋白相应cDNA序列高度同源的序列,经序列分析证明是一个山羊毛发特异性角蛋白,命名为山羊Ⅰ型毛角蛋白1(gHa1),GenBank 序列号为AY5101101。推导的读码框ORF由413氨基酸组成,与绵羊8C1角蛋白的序列一致性为97.8%。原位杂交显示它在皮肤初级和次级毛囊的皮质层有强烈的表达。

关键词: 绒山羊, 毛角蛋白, 原位杂交

Abstract: The keratin family includes epithelial (soft) keratins and hair (hard) keratins, and can be divided into acidic typeⅠand basic to neutral typeⅡsubfamilies. A cDNA was library constructed with poly (A)+RNA from adult goat skin and 392 ESTs were analyzed. Based on sequence homology comparisons with the known typeⅠhair keratins sheep 8CⅠand hHa1, A fulllength cDNA that encoded goat hair keratin gHaⅠ(GenBank Accession No.AY510110. 1) could be identified, it derived 413 amino acid sequence comparisons with the sheep 8C1 type Ⅰ mRNA exhibits the highest homology (97.8%). In site hybridization with the gHa1 cRNA probe on skin revealed a strong expression in cortex of both primary and secondary hair follicles.

Key words: cashmere goat, hair keratin, in situ hybridization