Open Access Highly Accessed Research article

A single nucleotide polymorphism in CAPN1 associated with marbling score in Korean cattle

Hyun Sub Cheong1, Du-Hak Yoon2, Byung Lae Park1, Lyoung Hyo Kim1, Joon Seol Bae1, Sohg Namgoong1, Hae Won Lee1, Chang Soo Han1, Ji On Kim1, Il-Cheong Cheong2 and Hyoung Doo Shin13*

Author Affiliations

1 Department of Genetic Epidemiology, SNP Genetics, Inc., Rm 1407, Complex B, WooLim Lion's Valley, 371-28, Gasan-Dong, Geumcheon-Gu, Seoul, 153-803, Korea

2 Du-Hak Yoon, Il-Cheong Cheong. National Livestock Research Institute, RDA, Suwon, 441-706, Korea

3 Department of Life Science, Sogang University, 1 Shinsu-dong, Mapo-gu, Seoul, 121-742, Korea

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BMC Genetics 2008, 9:33  doi:10.1186/1471-2156-9-33

Published: 19 April 2008



Marbling score (MS) is the major quantitative trait that affects carcass quality in beef cattle. In this study, we examined the association between genetic polymorphisms of the micromolar calcium-activated neutral protease gene (micro-calpain, CAPN1) and carcass traits in Korean cattle (also known as Hanwoo).


By direct DNA sequencing in 24 unrelated Korean cattle, we identified 39 sequence variants within exons and their flanking regions in CAPN1. Among them, 12 common polymorphic sites were selected for genotyping in the beef cattle (n = 421). Statistical analysis revealed that a polymorphism in the 3'UTR (c.2151*479C>T) showed significant association with MS (Pcor. = 0.02).


Our findings suggest that polymorphisms in CAPN1 might be one of the important genetic factors involved in carcass quality in beef cattle, although it could be false positive association.