Parkin-FBXW7-Cul1 ubiquitin ligase complex / F-box domain binding / PcG protein complex / regulation of epidermal cell differentiation / cullin-RING ubiquitin ligase complex / maintenance of protein location in nucleus / Cul7-RING ubiquitin ligase complex / regulation of smoothened signaling pathway / Loss of Function of FBXW7 in Cancer and NOTCH1 Signaling / Nuclear events mediated by NFE2L2 ...Parkin-FBXW7-Cul1 ubiquitin ligase complex / F-box domain binding / PcG protein complex / regulation of epidermal cell differentiation / cullin-RING ubiquitin ligase complex / maintenance of protein location in nucleus / Cul7-RING ubiquitin ligase complex / regulation of smoothened signaling pathway / Loss of Function of FBXW7 in Cancer and NOTCH1 Signaling / Nuclear events mediated by NFE2L2 / ubiquitin ligase activator activity / negative regulation of response to oxidative stress / neural crest cell differentiation / SCF ubiquitin ligase complex / Cul3-RING ubiquitin ligase complex / SCF-dependent proteasomal ubiquitin-dependent protein catabolic process / Prolactin receptor signaling / ubiquitin ligase complex scaffold activity / protein quality control for misfolded or incompletely synthesized proteins / cullin family protein binding / protein monoubiquitination / transcription regulator inhibitor activity / ubiquitin-like ligase-substrate adaptor activity / Nuclear events stimulated by ALK signaling in cancer / protein K48-linked ubiquitination / inclusion body / cellular response to interleukin-4 / intrinsic apoptotic signaling pathway / molecular function activator activity / animal organ morphogenesis / Regulation of BACH1 activity / MAP3K8 (TPL2)-dependent MAPK1/3 activation / regulation of autophagy / actin filament / SCF-beta-TrCP mediated degradation of Emi1 / NIK-->noncanonical NF-kB signaling / Vpu mediated degradation of CD4 / Dectin-1 mediated noncanonical NF-kB signaling / Degradation of CRY and PER proteins / Activation of NF-kappaB in B cells / G1/S transition of mitotic cell cycle / Degradation of GLI1 by the proteasome / Iron uptake and transport / GSK3B and BTRC:CUL1-mediated-degradation of NFE2L2 / Negative regulation of NOTCH4 signaling / FBXL7 down-regulates AURKA during mitotic entry and in early mitosis / Ubiquitin-Mediated Degradation of Phosphorylated Cdc25A / Degradation of GLI2 by the proteasome / GLI3 is processed to GLI3R by the proteasome / Degradation of beta-catenin by the destruction complex / beta-catenin binding / NOTCH1 Intracellular Domain Regulates Transcription / CLEC7A (Dectin-1) signaling / Constitutive Signaling by NOTCH1 PEST Domain Mutants / Constitutive Signaling by NOTCH1 HD+PEST Domain Mutants / SCF(Skp2)-mediated degradation of p27/p21 / FCERI mediated NF-kB activation / centriolar satellite / Interleukin-1 signaling / Orc1 removal from chromatin / disordered domain specific binding / protein polyubiquitination / Cyclin D associated events in G1 / Regulation of RUNX2 expression and activity / KEAP1-NFE2L2 pathway / Regulation of PLK1 Activity at G2/M Transition / Downstream TCR signaling / nervous system development / Antigen processing: Ubiquitination & Proteasome degradation / positive regulation of proteasomal ubiquitin-dependent protein catabolic process / Neddylation / cellular response to oxidative stress / midbody / Potential therapeutics for SARS / ubiquitin-dependent protein catabolic process / in utero embryonic development / RNA polymerase II-specific DNA-binding transcription factor binding / proteasome-mediated ubiquitin-dependent protein catabolic process / protein-macromolecule adaptor activity / positive regulation of canonical NF-kappaB signal transduction / cell population proliferation / Ub-specific processing proteases / protein ubiquitination / chromatin remodeling / protein domain specific binding / ubiquitin protein ligase binding / centrosome / negative regulation of transcription by RNA polymerase II / endoplasmic reticulum / nucleoplasm / identical protein binding / nucleus / plasma membrane / cytoplasm / cytosol 類似検索 - 分子機能
ジャーナル: Nature / 年: 2020 タイトル: Structural basis for dimerization quality control. 著者: Elijah L Mena / Predrag Jevtić / Basil J Greber / Christine L Gee / Brandon G Lew / David Akopian / Eva Nogales / John Kuriyan / Michael Rape / 要旨: Most quality control pathways target misfolded proteins to prevent toxic aggregation and neurodegeneration. Dimerization quality control further improves proteostasis by eliminating complexes of ...Most quality control pathways target misfolded proteins to prevent toxic aggregation and neurodegeneration. Dimerization quality control further improves proteostasis by eliminating complexes of aberrant composition, but how it detects incorrect subunits remains unknown. Here we provide structural insight into target selection by SCF-FBXL17, a dimerization-quality-control E3 ligase that ubiquitylates and helps to degrade inactive heterodimers of BTB proteins while sparing functional homodimers. We find that SCF-FBXL17 disrupts aberrant BTB dimers that fail to stabilize an intermolecular β-sheet around a highly divergent β-strand of the BTB domain. Complex dissociation allows SCF-FBXL17 to wrap around a single BTB domain, resulting in robust ubiquitylation. SCF-FBXL17 therefore probes both shape and complementarity of BTB domains, a mechanism that is well suited to establish quality control of complex composition for recurrent interaction modules.
Datasets from K3 and K2 were joined for the final reconstruction.
粒子像選択
選択した数: 824561 詳細: Total number of particles for both datasets. Selected using RELION auto-picking (Laplacian-of-Gaussian).
初期モデル
モデルのタイプ: INSILICO MODEL 詳細: Initial models were generated from molecular structures and by ab-initio model generation in cryoSPARC (with consistent results).