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  • 02월 19일 10시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

제121회 대한화학회 학술발표회, 총회 및 기기전시회 안내 A chemical biology route to site-specific authentic protein modifications

등록일
2018년 3월 12일 15시 49분 04초
접수번호
6637
발표코드
KCS.O-1 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
목 10시 : 15분
발표형식
구두발표
발표분야
KCS - Oral Presentation for 2018 DOW Chemical Korea Award
저자 및
공동저자
Aerin Yang, Sura Ha, Jihye Ahn, Rira Kim, Sungyoon Kim, Younghoon Lee, Jaehoon Kim, Dieter Söll*, Hee-Yoon Lee*, Hee-Sung Park*
Korea Advanced Institute of Science and Technology, Korea
Many essential biological processes are controlled by posttranslational protein modifications. The inability to synthetically attain the diversity enabled by these modifications limits functional studies of many proteins.We designed a three-step approach for installing authentic posttranslational modifications in recombinant proteins. We first use the established O-phosphoserine (Sep) orthogonal translation system to create a Sep-containing recombinant protein. The Sep residue is then dephosphorylated to dehydroalanine (Dha). Last, conjugate addition of alkyl iodides to Dha, promoted by zinc and copper, enables chemoselective carbon-carbon bond formation. To validate our approach, we produced histone H3, ubiquitin, and green fluorescent protein variants with site-specific modifications, including different methylations of H3K79. The methylated histones stimulate transcription through histone acetylation. This approach offers a powerful tool to engineer diverse designer proteins.

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