Journal of Life Science (생명과학회지)

Korean Society of Life Science (한국생명과학회)
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Association of Heat Shock Protein Beta 1 (HSPB1) Gene Expression with Tenderness in Loin Muscle of Korean Cattle (Hanwoo)

한우 등심조직 내 heat shock protein beta 1 (HSPB1) 발현과 연도와의 관련성 연구

  • Received : 2012.09.25
  • Accepted : 2012.11.26
  • Published : 2012.11.30
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Abstract

In a previous proteomic study, heat shock protein beta 1 (HSPB1) was detected as differentially expressed protein in longissimus thoracis between low (grade 3) and high (grade 1++) meat quality groups by 2DE gel electrophoresis. The present study investigated an association of HSPB1 expression at the level of gene and protein with Warner-Bratzler shear force (WBS) measured in 20 Hanwoo steers. An analysis of variance (ANOVA) between expression values and WBS showed that WBS was affected by HSPB1 expression (p<0.05). The expression (at both gene and protein level) of the HSPB1 was 2 times higher in the low WBS group than that in the high WBS group (p<0.01). This result suggests that the HSPB1 gene may be a candidate gene associated with tenderness in longissimus thoracis of Korean cattle.

육질 등급에 차이를 보이는(3등급과 1++등급) 한우 등심육을 대상으로 한 단백체 연구를 통해 heat shock protein beta 1 (HSPB1)의 발현 차이가 관찰되었다. 따라서 본 연구는 HSPB1의 유전자와 단백질 수준에서의 발현이 육질에 중요한 요인으로 작용하는 연도(전단력)에 미치는 영향을 규명하기 위하여 수행하였다. 전단력 값의 차이를 보이는 동기우 집단 20두를 대상으로 유전자 및 단백질의 발현량을 분석하였고, 통계분석을 수행하였다. 유전자 및 단백질 수준에서의 발현량을 분석한 결과 HSPB1은 전단력이 낮은 그룹에서 전단력이 높은 그룹보다 2배 발현이 높은 것으로 확인되었으며(p<0.05), 전단력과의 관련성 분석 결과에서도 유전자와 단백질 발현량 모두에서 통계적 유의성이 확인하였다(p<0.05). 이러한 결과로 볼 때 HSPB1 유전자는 한우 등심육의 연도와 밀접히 관련되어 있다고 판단되며, 지속적으로 유전자구조 변이연구 등을 통해 유전자 마커로의 개발이 필요할 것으로 생각된다.

Keywords

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