E3 ligases play a critical role in ubiquitin (Ub) conjugation cascades, and any aberration in their activity is associated with a number of diseases. Advancement in our knowledge of understanding the roles of HECT E3s requires biochemical tools such as activity-based probes (ABPs). In this study we developed a novel dehydroalanine (Dha)-based E2-Ub ABP using a strategy that is a combination of practical hydrazide-based native chemical ligation and sequential Dha formation. The probe could be used for labeling HECT E3s not only in vitro but also in endogenous cellular contexts. Our easy-to-implement method is expected to be useful for the preparation of Dha based Ub family E2 conjugate ABPs.
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Tohoku Univ, Grad Sch Med, United Ctr Adv Res & Translat Med, Dept Cell Proliferat, Sendai, Miyagi 9008575, JapanTohoku Univ, Grad Sch Med, United Ctr Adv Res & Translat Med, Dept Cell Proliferat, Sendai, Miyagi 9008575, Japan
Nakagawa, Tadashi
Mondal, Koushik
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Creighton Univ, Dept Med Microbiol & Immunol, Omaha, NE 68178 USATohoku Univ, Grad Sch Med, United Ctr Adv Res & Translat Med, Dept Cell Proliferat, Sendai, Miyagi 9008575, Japan
Mondal, Koushik
Swanson, Patrick C.
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Creighton Univ, Dept Med Microbiol & Immunol, Omaha, NE 68178 USATohoku Univ, Grad Sch Med, United Ctr Adv Res & Translat Med, Dept Cell Proliferat, Sendai, Miyagi 9008575, Japan
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Univ Tokyo, Inst Med Sci, Div Bacterial Infect Biol, Minato Ku, Tokyo, JapanUniv Tokyo, Inst Med Sci, Div Bacterial Infect Biol, Minato Ku, Tokyo, Japan
Ashida, Hiroshi
Nakano, Hiroyasu
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Juntendo Univ, Sch Med, Grad Sch, Dept Immunol, Tokyo 113, JapanUniv Tokyo, Inst Med Sci, Div Bacterial Infect Biol, Minato Ku, Tokyo, Japan
Nakano, Hiroyasu
Sasakawa, Chihiro
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Univ Tokyo, Inst Med Sci, Div Bacterial Infect Biol, Minato Ku, Tokyo, Japan
Nippon Inst Biol Sci, Tokyo, Japan
Chiba Univ, Med Mycol Res Ctr, Chuo Ku, Chiba, JapanUniv Tokyo, Inst Med Sci, Div Bacterial Infect Biol, Minato Ku, Tokyo, Japan