Effect of the Extraction Method on the Soybean Embryo Factor 3 Activity

추출 방법에 따른 대두 배인자 3 역가

  • Lee, Kyung-Hoon (Department of Food Science and Technology, College of Industrial Studies, Chung-Ang University) ;
  • Chung, Dong-Hyo (Department of Food Science and Technology, College of Industrial Studies, Chung-Ang University) ;
  • Kim, Seong-San (Department of Food Science and Technology, College of Industrial Studies, Chung-Ang University) ;
  • Song, Youn-Ho (Department of Food Science and Technology, College of Industrial Studies, Chung-Ang University) ;
  • Kim, Woo-Yeon (Department of Biotechnology, College of Industrial Studies, Chung-Ang University)
  • 이경훈 (중앙대학교 식품공학과) ;
  • 정동효 (중앙대학교 식품공학과) ;
  • 김성산 (중앙대학교 식품공학과) ;
  • 송윤호 (중앙대학교 식품공학과) ;
  • 김우연 (중앙대학교 생물공학과)
  • Published : 1995.02.28

Abstract

Soybean nuclear extracts were prepared to detect SEF3(soybean embryo factor 3), which is presumed to be a trans-acting factor for the expression of the soybean ${\beta}-conglycinin\;{\alpha}'$ subunit gene. To increase the specific activity of DNA probe during labeling with $[{\alpha}-^{32}P]$dATP, dATP was added to a final concentration of 1.1 mM during the chase reaction. It results in approximately four-fold increase of specific activity of the DNA probe. Effects of several modifications in preparation of soybean nuclear extracts were examined. It was found that glycerol is effective to stabilize SEF3 during the preparation of nuclear extracts and polyethylenimine could be used to increase the specific activity of SEF3 in nuclear extracts.

본 실험에서는 대두 ${\beta}-conglycinin$${\alpha}'$ subunit 유전자의 발현에 관여하리라 추정되는 대두 배인자 3(SEF3) 역가를 가지는 대두 핵 추출물 조제 방법에 대하여 조사하였다. 역가 조사를 위한 DNA의 표지 반응 후에 추가로 1 mM dATP를 첨가하여 반응을 지속한 경우가 첨가하지 않은 경우보다 약 4배 높은 방사능 역가의 DNA 탐침을 얻을 수 있었다. 이러한 DNA 탐침을 이용하여 핵 추출물 조제 방법에 따른 대두 배인자 3의 역가를 gel mobility shift assay로 조사한 결과, 조제 중 glycerol 첨가가 배인자 3을 안정화시켰고, polyethylenimine을 이용한 대두 핵 추출물 조제법이 배인자 3의 비역가를 증가시키는 데 이용될 수 있음을 알 수 있었다.

Keywords