6MIU

Crystal structure of p62 ZZ domain in complex with Arg-Glu peptide

6MIU の概要

• エントリーDOI: 10.2210/pdb6miu/pdb
• 分子名称: Sequestosome-1, Arg-Glu peptide chimera, ZINC ION (3 entities in total)
• 機能のキーワード: p62, zz domain, nt-degron, autophagy, receptor, signaling protein
• 由来する生物種: Homo sapiens (Human); 詳細
• タンパク質・核酸の鎖数: 2
• 化学式量合計: 12517.75

構造登録者

Ahn, J.,Zhang, Y.,Kutateladze, T.G. (登録日: 2018-09-20, 公開日: 2018-10-31, 最終更新日: 2024-03-13)

主引用文献

Zhang, Y.,Mun, S.R.,Linares, J.F.,Ahn, J.,Towers, C.G.,Ji, C.H.,Fitzwalter, B.E.,Holden, M.R.,Mi, W.,Shi, X.,Moscat, J.,Thorburn, A.,Diaz-Meco, M.T.,Kwon, Y.T.,Kutateladze, T.G.
ZZ-dependent regulation of p62/SQSTM1 in autophagy.
Nat Commun, 9:4373-4373, 2018

PubMed Abstract: Autophagic receptor p62 is a critical mediator of cell detoxification, stress response, and metabolic programs and is commonly deregulated in human diseases. The diverse functions of p62 arise from its ability to interact with a large set of ligands, such as arginylated (Nt-R) substrates. Here, we describe the structural mechanism for selective recognition of Nt-R by the ZZ domain of p62 (p62). We show that binding of p62 to Nt-R substrates stimulates p62 aggregation and macroautophagy and is required for autophagic targeting of p62. p62 is essential for mTORC1 activation in response to arginine, but it is not a direct sensor of free arginine in the mTORC1 pathway. We identified a regulatory linker (RL) region in p62 that binds p62 in vitro and may modulate p62 function. Our findings shed new light on the mechanistic and functional significance of the major cytosolic adaptor protein p62 in two fundamental signaling pathways.

PubMed: 30349045
DOI: 10.1038/s41467-018-06878-8

実験手法

X-RAY DIFFRACTION (1.9 Å)