Insook Jang, Sujin Park, Bruno Guhl, Jin Won Cho, Jürgen Roth
언어
영어(ENG)
URL
https://www.earticle.net/Article/A192839
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원문정보
초록
영어
EDEM1 is an endoplasmic reticulum-associated protein degradation (ERAD) component. ERAD is a cellular pathway that targets misfolded and misassembled glycoproteins for degradation. EDEM1 is involved in the recognition of misfolded luminal glycoproteins and in routing them for dislocation to the cytosol, followed by their degradation. EDEM1 interacts with substrate glycoproteins after their exit from the calnexin/calreticulin cycle and after processing by ER-mannosidase I. Although EDEM1 was proposed to be lectin–like and to react with Man8GlcNAc2 oligosaccharides, itsmechanism of action and its fate are still largely unknown. In a previous report, we found that EDEM1 becomes rapidly degraded and that this occurs by basal autophagy. Here, we show that EDEM1 forms complexes with the selective autophagy receptor p62, NBR1 and Alfy. This was demonstrated in HepG2 cells by double immunogold electron microscopy. Furthermore, we show the interaction between p62 and EDEM1 by immunoprecipitation- Western blot experiments. By serial section analysis, the origin of the phagophore for selective autophagy of EDEM1 could be identified as modified parts of rough ER cisternae. Hence, we provide new insight into the details of EDEM1 degradation process.
저자
Insook Jang [ Dept. of integrated OMICS for Biomedical Science, WCU Program of Graduate School Yonsei University, Seoul, Korea ]
Sujin Park [ Dept. of integrated OMICS for Biomedical Science, WCU Program of Graduate School Yonsei University, Seoul, Korea ]
Bruno Guhl [ Dept. of integrated OMICS for Biomedical Science, WCU Program of Graduate School Yonsei University, Seoul, Korea ]
Jin Won Cho [ Dept. of integrated OMICS for Biomedical Science, WCU Program of Graduate School Yonsei University, Seoul, Korea ]
Jürgen Roth [ Dept. of integrated OMICS for Biomedical Science, WCU Program of Graduate School Yonsei University, Seoul, Korea ]
본 학회는 화학, 생화학, 분자생물학, 미생물학, 식품공학, 의학, 약학, 유전공학 및 생물공학, 환경 및 기타 공업 등 전 분야의 탄수화물관련 이론과 기술을 연구 발전시키고 산학협동을 통해 이를 보급하여 국내 관련 산업의 발전 및 국민생활의 과학화에 기여하고자 하며, 이러한 목표와 비젼의 실현을 위해 회원들이 적극적인 참여와 활동을 전개하고자 한다.