文献类型: 外文期刊
第一作者: Yan, Qiuliang
作者: Yan, Qiuliang;Lib, Hongbin;Wei, Caihong;Niu, Lili;Li, Shangang;Du, Lixin;Yan, Qiuliang;Zhang, Yinghan;Guan, Shan
作者机构:
关键词: cattle;microsatellite;expressed sequence tags;EST-SSR
期刊名称:JOURNAL OF GENETICS AND GENOMICS ( 影响因子:4.275; 五年影响因子:5.223 )
ISSN: 1673-8527
年卷期: 2008 年 35 卷 5 期
页码:
收录情况: SCI
摘要: To identify EST-SSR molecular markers, 41,986 cattle UniGene sequences from NCBI were mined for analyzing SSRs. A total of 1,831 SSRs were identified from 1,666 ESTs, which represented an average density of 19.88 kb per SSR. The frequency of EST-SSRs was 4.0%. The dinucleotide repeat motif was the most abundant SSR, accounting for 54%, followed by 22%, 13%, 7% and 4%, respectively, for tri-, hexa-, penta- and tetra-nucleotide repeats. Depending upon the length of the repeat unit, the length of microsatellites varied from 14 to 86 bp. Among the di- and tri-nucleotide repeats, AC/TG (57%) and AGC (12%) were the most abundant type. Annotation of EST-SSRs was also carried out. Three hundred primer pairs were randomly designed using Prime Premier 5.0 program and Oligo 5.0 for further experimental validation.
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