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http://dx.doi.org/10.5352/JLS.2019.29.12.1314

A Novel SNP in the Exon 8 Region of the CLMN Gene and Its Association with Marbling Score in Hanwoo  

Shin, Sung-Chul (Department of Animal Biotechnology, College of Life Science, Sangji University)
Chung, Eui-Ryong (Department of Animal Biotechnology, College of Life Science, Sangji University)
Publication Information
Journal of Life Science / v.29, no.12, 2019 , pp. 1314-1320 More about this Journal
Abstract
This study aimed to identify single nucleotide polymorphisms in exon 8 region of the calmin (CLMN) gene and to evaluate their associations with meat yield and quality traits in Hanwoo (Korean cattle). We compared gene expression pattern of CLMN between high and low marbling score groups with extremely different intramuscular fat content of the longissimus lumborum muscles in Hanwoo. The CLMN gene was highly expressed in the high marbling score group. Total of nine SNPs were identified in the exon 8 region of CLMN gene, genotyping of the SNPs was carried out using direct-sequencing analysis in Hanwoo population (n=300) to evaluate their association with meat yield and quality traits. As a result, g.23249G>C in exon 8 was significantly associated with marbling score. Animals with the CC and GC genotypes had higher marbling score than those with the GG genotype. We constructed haplotypes of CLMN gene by linkage disequilibrium analysis and analyzed association between haplotypes and meat yield and quality traits. Haplotype of CLMN gene was associated with marbling score. As a result, animals with the CC-CC haplotype (g.23249G>C and g.23465T>C SNPs) had higher marbling score than those with CT and GT haplotypes. These findings suggest that the SNPs of bovine CLMN gene may be a useful molecular marker for selection of meat quality traits in Hanwoo.
Keywords
Calmin gene; gene expression; Hanwoo; marbling score; SNP;
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