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논문 기본 정보

자료유형
학술저널
저자정보
Park Young-Hoon (Department of Molecular Biology College of Natural Sciences Pusan National University Jangjeon-dong) Han Chang Woo (Department of Molecular Biology College of Natural Sciences Pusan National University Jangjeon-dong) Jeong Mi Suk (Department of Molecular Biology College of Natural Sciences Pusan National University Jangjeon-dong) 장세복 (부산대학교)
저널정보
한국미생물생명공학회 Journal of Microbiology and Biotechnology Journal of Microbiology and Biotechnology 제32권 제8호
발행연도
2022.8
수록면
1,034 - 1,040 (7page)
DOI
10.4014/jmb.2206.06003

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초록· 키워드

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Fas-associated death domain (FADD) is an adapter molecule that bridges the interaction between receptor-interacting protein 1 (RIP1) and aspartate-specific cysteine protease-8 (caspase-8). As the primary mediator of apoptotic cell death, caspase-8 has two N-terminal death-effector domains (DEDs) and it interacts with other proteins in the DED subfamily through several conserved residues. In the tumor necrosis receptor-1 (TNFR-1)-dependent signaling pathway, apoptosis is triggered by the caspase-8/FADD complex by stimulating receptor internalization. However, the molecular mechanism of complex formation by the DED proteins remains poorly understood. Here, we found that direct DED-DED interaction between FADD and caspase-8 and the structure-based mutations (Y8D/I128A, E12A/I128A, E12R/I128A, K39A/I128A, K39D/I128A, F122A/I128A, and L123A/I128A) of caspase-8 disrupted formation of the stable DED complex with FADD. Moreover, the monomeric crystal structure of the caspase-8 DEDs (F122A/I128A) was solved at 1.7 A. This study will provide new insight into the interaction mechanism and structural characteristics between FADD and caspase-8 DED subfamily proteins.

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