6xkc

Crystal structure of E3 ligase

spinqualitylabelsall models 6xkc, resolution 2.03Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 6xkc is a 6 chain structure with sequence from Homo sapiens. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: X-ray diffraction, Resolution 2.03Å Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function FEM1C_HUMAN Probable component of an E3 ubiquitin-protein ligase complex, in which it may act as a substrate recognition subunit. Publication Abstract from PubMed Proteome integrity depends on the ubiquitin-proteasome system to degrade unwanted or abnormal proteins. In addition to the N-degrons, C-terminal residues of proteins can also serve as degradation signals (C-degrons) that are recognized by specific cullin-RING ubiquitin ligases (CRLs) for proteasomal degradation. FEM1C is a CRL2 substrate receptor that targets the C-terminal arginine degron (Arg/C-degron), but the molecular mechanism of substrate recognition remains largely elusive. Here, we present crystal structures of FEM1C in complex with Arg/C-degron and show that FEM1C utilizes a semi-open binding pocket to capture the C-terminal arginine and that the extreme C-terminal arginine is the major structural determinant in recognition by FEM1C. Together with biochemical and mutagenesis studies, we provide a framework for understanding molecular recognition of the Arg/C-degron by the FEM family of proteins. Molecular basis for ubiquitin ligase CRL2(FEM1C)-mediated recognition of C-degron.,Yan X, Wang X, Li Y, Zhou M, Li Y, Song L, Mi W, Min J, Dong C Nat Chem Biol. 2021 Jan 4. pii: 10.1038/s41589-020-00703-4. doi:, 10.1038/s41589-020-00703-4. PMID:33398170 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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