Genetic polymorphisms of milk epithelial mucin of yaks  

作　　者：ZHENG Yucai ZHAO Xingba JIN Suyu PENG Xianwen BAI Wenlin 

机构地区：[1]College of Life Science and Technology, Southwest University for Nationalities, Chengdu 610041, China [2]State Key Laboratory for Agrobiotechnology and Ministry of Agriculture Key Laboratory of Animal Genetics, Breeding and Reproduction, China Agricultural University, Beijing 100094, China

出　　处：《Progress in Natural Science:Materials International》2006年第11期1222-1226,共5页自然科学进展·国际材料（英文版）

基　　金：Supported by National Natural Science Foundation of China (39870607) and New Century Excellent Talents in University (NCET-04-0135)

摘　　要：Milk epithelial mucin (MUC1) of yaks was separated by SDS-polyacrylamide gel electrophoresis. A total of nine types of MUC1 were revealed in 427 yaks from five yak breeds including Maiwa yak, Jiulong yak, Tianzhu white yak, Qinghai yak and Tibetan yak. The molecular weights of MUC1 are from 163 kD to 208 kD, most of which are larger than those of bovine. Population genetic analysis shows that the gene frequency and genotype frequency of yak MUC1 differ among breeds, with relatively high gene heterozygosity. The five yak breeds studied fall into two groups according to their milk MUC1 gene frequency, suggesting that milk MUC1 exhibits specificities for local yak groups.Milk epithelial mucin （MUC1） of yaks was separated by SDS-polyacrylamide gel electrophoresis. A total of nine types of MUC1 were revealed in 427 yaks from five yak breeds including Maiwa yak, Jiulong yak, Tianzhu white yak, Qinghai yak and Tibetan yak. The molecular weights of MUC1 are from 163 kD to 208 kD, most of which are larger than those of bovine. Population genetic analysis shows that the gene frequency and genotype frequency of yak MUC1 differ among breeds, with relatively high gene heterozygosity. The five yak breeds studied fall into two groups according to their milk MUC1 gene frequency, suggesting that milk MUC1 exhibits specificities for local yak groups.

关 键 词：YAK MILK genetic polymorlphism MUC1 

分 类 号：S823[农业科学—畜牧学]