Sequestosome

spinqualitylabelsall models Structure of human sequestosome UBA domain (PDB code 2jy8) Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Function Sequestosome (SQS) or p62, is required for the formation and autophagic degredation of polyubiquitin-containg bodies. SQS may regulate signaling cascades through ubiquitination. Structural highlights SQS is a multi-domain protein. SQS domain structure includes: PB1 domain which contains Phox and Berm1 ZZ-type zinc finger SMIR – SOD interaction domain TB – TRAF6 binding motif LC3 – microtubule-associated protein 1 light chain 3B LIR – interaction region UBA – ubiquitin association domain. Relevance SQS is associated with fibrillary tangles in Alzheimer disease. 3D structures of sequestosome Updated on 25-August-2016 1q02, 2jy7, 2jy8, 2k0b, 2knv – SQS UBA domain – human - NMR 3b0f – mSQS UBA domain – mouse 2rru – mSQS UBA domain - NMR 2ktr – rSQS PB1 domain – rat - NMR 2kkc – rSQS PB1 domain (mutant) - NMR 3ade – mSQS + KEAP-1 – mouse 4mjs – hSQS-1 PB1 domain + protein kinase C zeta type 4uf8, 4uf9 – hSQS-1 PB1-P62 domain – Cryo EM

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Michal Harel