Parkin-FBXW7-Cul1 ubiquitin ligase complex / F-box domain binding / PcG protein complex / regulation of epidermal cell differentiation / cullin-RING ubiquitin ligase complex / positive regulation of ubiquitin protein ligase activity / Cul7-RING ubiquitin ligase complex / maintenance of protein location in nucleus / Loss of Function of FBXW7 in Cancer and NOTCH1 Signaling / regulation of smoothened signaling pathway ...Parkin-FBXW7-Cul1 ubiquitin ligase complex / F-box domain binding / PcG protein complex / regulation of epidermal cell differentiation / cullin-RING ubiquitin ligase complex / positive regulation of ubiquitin protein ligase activity / Cul7-RING ubiquitin ligase complex / maintenance of protein location in nucleus / Loss of Function of FBXW7 in Cancer and NOTCH1 Signaling / regulation of smoothened signaling pathway / Nuclear events mediated by NFE2L2 / neural crest cell differentiation / negative regulation of response to oxidative stress / SCF ubiquitin ligase complex / SCF-dependent proteasomal ubiquitin-dependent protein catabolic process / Cul3-RING ubiquitin ligase complex / Prolactin receptor signaling / ubiquitin ligase complex scaffold activity / protein quality control for misfolded or incompletely synthesized proteins / cullin family protein binding / protein monoubiquitination / ubiquitin-like ligase-substrate adaptor activity / protein K48-linked ubiquitination / transcription regulator inhibitor activity / Nuclear events stimulated by ALK signaling in cancer / inclusion body / cellular response to interleukin-4 / intrinsic apoptotic signaling pathway / molecular function activator activity / Regulation of BACH1 activity / MAP3K8 (TPL2)-dependent MAPK1/3 activation / animal organ morphogenesis / SCF-beta-TrCP mediated degradation of Emi1 / NIK-->noncanonical NF-kB signaling / actin filament / Vpu mediated degradation of CD4 / Dectin-1 mediated noncanonical NF-kB signaling / Activation of NF-kappaB in B cells / Degradation of GLI1 by the proteasome / Iron uptake and transport / GSK3B and BTRC:CUL1-mediated-degradation of NFE2L2 / Negative regulation of NOTCH4 signaling / G1/S transition of mitotic cell cycle / FBXL7 down-regulates AURKA during mitotic entry and in early mitosis / Degradation of GLI2 by the proteasome / GLI3 is processed to GLI3R by the proteasome / beta-catenin binding / Degradation of beta-catenin by the destruction complex / NOTCH1 Intracellular Domain Regulates Transcription / CLEC7A (Dectin-1) signaling / SCF(Skp2)-mediated degradation of p27/p21 / Constitutive Signaling by NOTCH1 PEST Domain Mutants / Constitutive Signaling by NOTCH1 HD+PEST Domain Mutants / FCERI mediated NF-kB activation / centriolar satellite / Interleukin-1 signaling / protein polyubiquitination / Orc1 removal from chromatin / disordered domain specific binding / Regulation of RUNX2 expression and activity / Cyclin D associated events in G1 / KEAP1-NFE2L2 pathway / : / Regulation of PLK1 Activity at G2/M Transition / Downstream TCR signaling / Antigen processing: Ubiquitination & Proteasome degradation / nervous system development / positive regulation of proteasomal ubiquitin-dependent protein catabolic process / Neddylation / cellular response to oxidative stress / midbody / ubiquitin-dependent protein catabolic process / protein-macromolecule adaptor activity / in utero embryonic development / Potential therapeutics for SARS / proteasome-mediated ubiquitin-dependent protein catabolic process / RNA polymerase II-specific DNA-binding transcription factor binding / cell population proliferation / positive regulation of canonical NF-kappaB signal transduction / Ub-specific processing proteases / regulation of autophagy / protein ubiquitination / chromatin remodeling / protein domain specific binding / ubiquitin protein ligase binding / centrosome / endoplasmic reticulum / negative regulation of transcription by RNA polymerase II / nucleoplasm / identical protein binding / nucleus / plasma membrane / cytosol / cytoplasm 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.
S-phasekinase-associatedprotein1 / SKP1 / Cyclin-A/CDK2-associated protein p19 / p19A / Organ of Corti protein 2 / OCP-2 / Organ of ...SKP1 / Cyclin-A/CDK2-associated protein p19 / p19A / Organ of Corti protein 2 / OCP-2 / Organ of Corti protein II / OCP-II / RNA polymerase II elongation factor-like protein / SIII / Transcription elongation factor B polypeptide 1-like / p19skp1
加速電圧: 200 kV / アライメント法: COMA FREE / C2レンズ絞り径: 50 µm / 凍結剤: NITROGEN / 電子線源: FIELD EMISSION GUN / 照射モード: FLOOD BEAM / モデル: FEI TALOS ARCTICA / モード: BRIGHT FIELD / Cs: 2.7 mm / 最大 デフォーカス(公称値): 3000 nm / 試料ホルダーモデル: OTHER
ID
最小 デフォーカス(公称値) (nm)
Specimen-ID
1
2000
1
2
1500
2
撮影
ID
Imaging-ID
電子線照射量 (e/Å2)
フィルム・検出器のモデル
撮影したグリッド数
検出モード
1
1
60
GATAN K3 (6k x 4k)
1
2
2
50
GATAN K2 SUMMIT (4k x 4k)
1
SUPER-RESOLUTION
-
解析
ソフトウェア
名称: PHENIX / バージョン: 1.16_3549: / 分類: 精密化
EMソフトウェア
ID
名称
バージョン
カテゴリ
Imaging-ID
詳細
2
SerialEM
画像取得
1
4
CTFFIND
4
CTF補正
5
Gctf
CTF補正
8
UCSF Chimera
モデルフィッティング
FITINMAP
10
SerialEM
画像取得
2
11
RELION
3
初期オイラー角割当
12
cryoSPARC
初期オイラー角割当
13
RELION
3
最終オイラー角割当
15
RELION
3
3次元再構成
16
PHENIX
モデル精密化
REALSPACEREFINE
画像処理
詳細: Datasets from K3 and K2 were joined for the final reconstruction.
CTF補正
詳細: As implemented in RELION. / タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION
粒子像の選択
選択した粒子像数: 824561 詳細: Total number of particles for both datasets. Selected using RELION auto-picking (Laplacian-of-Gaussian).
対称性
点対称性: C1 (非対称)
3次元再構成
解像度: 8.5 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 160256 / アルゴリズム: FOURIER SPACE / クラス平均像の数: 2 / 対称性のタイプ: POINT
原子モデル構築
プロトコル: OTHER / 空間: REAL 詳細: Coordinates were fitted as rigid bodies or fragments in Chimera and subsequently geometry-optimized using PHENIX real space refinement.