abs

학술발표회초록보기

초록문의 abstract@kcsnet.or.kr

결제문의 member@kcsnet.or.kr

현재 가능한 작업은 아래와 같습니다.
  • 09월 04일 13시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

DNA Mediated Energy Transfer from DAPI to Porphyrins

등록일
2009년 8월 14일 14시 58분 28초
접수번호
1131
발표코드
34P209포 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
목 <발표Ⅰ>
발표형식
포스터
발표분야
물리화학
저자 및
공동저자
정진아, 전선희, 이길준1, 한성욱2, 김석규
영남대학교 화학과, Korea
1경운대학교 한방자원학부, Korea
2경운대학교 환경공학과, Korea
Horizontal energy transfer through the DNA stem between simultaneously bound [4',6-diamidino-2-phenylindole (DAPI) and porphyrins has been investigated. From earlier study, we reported that the excited energy of DNA bound DAPI was effectively transferred to porphyrin molecule namely, meso-tetrakis(N-methylpyridinium-4-yl) porphyrin (TMPyP) or cis-bis(N-methylpyridinium-4-yl) porphyrin (cis-BMPyP). Here, we studied the effect of DAPI concentration to the DNA mediated energy transfer efficiency. As results, the fluorescence of the DNA bound DAPI was effectively quenched by TMPyP and cis-BMPyP. DAPI-DNA and DAPI-poly[d(A-T)2] quenching by porphyrin appeared to be upward bending curve in the Stern-Volmer plot. While quenching of the DAPI’s fluorescence showed downward bending curve in the Stern-Volmer plot in the poly[d(G-C)2]. The quenching efficiency of DAPI-DNA complex by TMPyP was significantly decreased at high DAPI concentration relative to DNA, while no remarkable change of quenching efficiency was observed in cis-BMPyP case.

상단으로