期刊
FEBS LETTERS
卷 586, 期 8, 页码 1141-1146出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.febslet.2012.03.027
关键词
PUB domain; Peptide:N-glycanase; HR23; NMR; Endoplasmic reticulum-associated degradation; Ubiquitin-proteasome system
资金
- Ministry of Education, Culture, Sports, Science and Technology of Japan
- CREST from the Japan Science and Technology Agency
- [18390016]
- [20059030]
- [20107004]
- [21370050]
- [21870052]
- [22020039]
- Grants-in-Aid for Scientific Research [21370050, 20107004, 22020039, 20107001] Funding Source: KAKEN
PUB domains are identified in several proteins functioning in the ubiquitin (Ub)-proteasome system and considered as p97-binding modules. To address the further functional roles of these domains, we herein characterized the interactions of the PUB domain of peptide:N-glycanase (PNGase) with Ub and Ub-like domain (UBL) of the proteasome shuttle factor HR23. NMR data indicated that PNGase-PUB exerts an acceptor preferentially for HR23-UBL, electrostatically interacting with the UBL surface employed for binding to other Ub/UBL motifs. Our findings imply that PNGase-PUB serves not only as p97-binding module but also as a possible activator of HR23 in endoplasmic reticulum-associated degradation mechanisms. Structured summary of protein interactions: PNGase binds to HR23A by affinity chromatography technology (View interaction) PNGase and HR23A bind by nuclear magnetic resonance (View interaction) PNGase and HR23B bind by nuclear magnetic resonance (View interaction) (C) 2012 Federation of European Biochemical Societies. Published by Elsevier B. V. All rights reserved.
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