Journal of Animal Science and Technology

  • 제48권1호
  • /
  • Pages.1-8
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  • 2006
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  • 2672-0191(pISSN)
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  • 2055-0391(eISSN)
한국축산학회 (Korean Society of Animal Sciences and Technology)
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한반도 멧돼지 KIT 유전자의 유전적 변이와 신규 돌연변이

Novel Mutation and Genetic Variation of the KIT Gene in Korean Wild Boars(Sus scrofa coreanus)

  • 조인철 (농촌진흥청 난지농업연구소) ;
  • 최유림 (농촌진흥청 난지농업연구소) ;
  • 고문석 (농촌진흥청 난지농업연구소) ;
  • 김재환 (경상대학교 응용생명과학부) ;
  • 이정규 (경상대학교 응용생명과학부) ;
  • 전진태 (경상대학교 응용생명과학부) ;
  • 이항 (서울대학교 수의대학 야생동물유전자원은행) ;
  • 오문유 (제주대학교 생명과학과) ;
  • 한상현 (농촌진흥청 난지농업연구소)
  • Jo, In-Cheol (National Institute of Subtropical Agriculture, RDA) ;
  • Choe, Yu-Rim (National Institute of Subtropical Agriculture, RDA) ;
  • Go, Mun-Seok (National Institute of Subtropical Agriculture, RDA) ;
  • Kim, Jae-Hwan (Division of Applied Life Science, Gyeongsang National University) ;
  • Lee, Jeong-Gyu (Division of Applied Life Science, Gyeongsang National University) ;
  • Jeon, Jin-Tae (Division of Applied Life Science, Gyeongsang National University) ;
  • Lee, Hang (Conservation Genome Research Bank for Korean Wildlife, College of Veterinary Medicine, Seoul National University) ;
  • O, Mun-Yu (Department of Life Science, Cheju National University) ;
  • Han, Sang-Hyeon (National Institute of Subtropical Agriculture, RDA)
  • 발행 : 2006.02.28
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초록

포유동물에서 KIT 유전자는 우성 백색의 모색발현에 관여하는 후보유전자로서 mast/stem cell growth factor receptor를 암호화하는 것으로 알려져 있다. 본 연구에서는 한반도에서 서식하고 있는 야생멧돼지의 모색발현에 있어서 KIT 유전자의 유전적 변이를 확인하기 위하여 PCR- RFLP와 염기서열 분석을 수행하여 유전적 변이를 관찰하였다. 멧돼지 KIT 유전자의 exon17- intron 17 경계부위에 대한 NlaⅢ-RFLP 결과 splicing mutation이 없고, exon 19 상에서의 SNP C2678T에 대한 AciⅠ-RFLP 결과 역시 백색 품종들의 유전자형과는 다르게 나타났다. 이상의 결과는 멧돼지 집단 내 교잡에 의해 백모색의 자손이 출현하지 않음을 의미한다. 또한 exon 19과 exon 20에서 새로운 SNP들이 확인되었으며 이들 중 exon 20에서의 SNP A2760G는 아미노산의 변화(iso-leucine→valine)를 초래할 수 있으나 모색 발현과의 연관은 확인할 수 없었다. 돼지 KIT 유전자의 exon 19, 20과 intron 19 상에서의 새로 발견된 SNP와 splicing mutation의 존재 여부 등은 품종특이적인 양상으로 확인되었고, 이 같은 결과는 돼지에서 백색 모색 발현을 설명할 수 있는 좋은 자료가 될 것으로 사료된다.

KIT encodes a mast/stem cell growth factor receptor and is known as a possible candidate gene responsible for dominant white coat color in mammals. To investigate the genetic variation of KIT gene in Korean wild boars(Sus scrofa coreanus), we carried out PCR-RFLP and DNA sequencing for three exons(exons 17, 19, and 20) and intron 19 of the KIT gene in Korean wild boars. PCR-RFLP results using NlaⅢ restriction enzyme in the breakpoint region between exon 17 and intron 17 and AciⅠ restriction enzyme in exon 19 indicate that Korean wild boars did not have previously identified white coat color related splicing mutation and missense mutation, respectively. These results also indicate matings between Korean wild boars could not give white coat color offsprings. We also found new SNPs in exons 19(C2661T) and 20(A2760G). Of these, the SNP in exon 20 is a missense mutation which might induce the change of amino acid iso-leucine to valine. However, no relationship was identified with this missense mutation and coat color. In this study, breed specific new SNPs were identified in exons 19, 20 and intron 19 and these results will give important information for genetic variation of porcine KIT gene.

키워드

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