Molecular Cloning and Characterization of Bovine HMGA1 Gene

  • Yu, S.L. (Division of Animal Science and Resources, Chungnam National University) ;
  • Chung, H.J. (Division of Animal Science and Resources, Chungnam National University) ;
  • Sang, B.C. (Division of Animal Science and Resources, Chungnam National University) ;
  • Bhuiyan, M.S.A. (Division of Animal Science and Resources, Chungnam National University) ;
  • Yoon, D. (Division of Animal Genomics and Bioinformatics, National Institute of Animal Science) ;
  • Kim, K.S. (Department of Animal Science, Chungbuk National University) ;
  • Jeon, J.T. (Division of Applied Life Science, Gyeongsang National University) ;
  • Lee, J.H. (Division of Animal Science and Resources, Chungnam National University)
  • Received : 2007.03.14
  • Accepted : 2007.06.10
  • Published : 2007.11.01


The high mobility group AT-hook1 (HMGA1) proteins are known to be related to the regulation of gene transcription, replication and promotion of metastatic progression in cancer cells. The loss of expression by disrupting the HMGA1 gene affects insulin signaling and causes diabetes in the mouse. Previously identified single nucleotide polymorphism (SNP) of HMGA1 was significantly associated with fat deposition traits in the pig. In this study, we identified 3,935 bp nucleotide sequences from exon 5 to exon 8 of the bovine HMGA1 gene and its mRNA expression was observed by quantitative real-time PCR. Six single nucleotide polymorphisms in the bovine HMGA1 gene were detected and the allele frequencies of these SNPs were investigated using the PCR-RFLP method in nine cattle breeds including Limousin, Simmental, Brown Swiss, Hereford, Angus, Charolais, Hanwoo, Brahman and Red Chittagong cattle. The map location showed that the bovine HMGA1 gene was also closely located with a previously identified meat quality QTL region indicating this gene is the most likely positional candidate for meat quality traits in cattle.


HMGA1;SNP;Meat Quality Traits;Cattle


Supported by : Rural Development Administration


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