- EMDB-43572: Human Cullin-1 in complex with CAND2 -
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基本情報
登録情報
データベース: EMDB / ID: EMD-43572
タイトル
Human Cullin-1 in complex with CAND2
マップデータ
試料
複合体: CAND2-CUL1
タンパク質・ペプチド: Cullin-1
タンパク質・ペプチド: Cullin-associated NEDD8-dissociated protein 2
キーワード
Complex / LIGASE
機能・相同性
機能・相同性情報
SCF complex assembly / Parkin-FBXW7-Cul1 ubiquitin ligase complex / cullin-RING ubiquitin ligase complex / Loss of Function of FBXW7 in Cancer and NOTCH1 Signaling / SCF ubiquitin ligase complex / SCF-dependent proteasomal ubiquitin-dependent protein catabolic process / ubiquitin ligase complex scaffold activity / Prolactin receptor signaling / protein monoubiquitination / protein K48-linked ubiquitination ...SCF complex assembly / Parkin-FBXW7-Cul1 ubiquitin ligase complex / cullin-RING ubiquitin ligase complex / Loss of Function of FBXW7 in Cancer and NOTCH1 Signaling / SCF ubiquitin ligase complex / SCF-dependent proteasomal ubiquitin-dependent protein catabolic process / ubiquitin ligase complex scaffold activity / Prolactin receptor signaling / protein monoubiquitination / protein K48-linked ubiquitination / Nuclear events stimulated by ALK signaling in cancer / Regulation of BACH1 activity / MAP3K8 (TPL2)-dependent MAPK1/3 activation / intrinsic apoptotic signaling pathway / NIK-->noncanonical NF-kB signaling / SCF-beta-TrCP mediated degradation of Emi1 / TBP-class protein binding / Dectin-1 mediated noncanonical NF-kB signaling / animal organ morphogenesis / Iron uptake and transport / Activation of NF-kappaB in B cells / Degradation of GLI1 by the proteasome / GSK3B and BTRC:CUL1-mediated-degradation of NFE2L2 / Negative regulation of NOTCH4 signaling / Degradation of GLI2 by the proteasome / GLI3 is processed to GLI3R by the proteasome / FBXL7 down-regulates AURKA during mitotic entry and in early mitosis / Degradation of beta-catenin by the destruction complex / NOTCH1 Intracellular Domain Regulates Transcription / Constitutive Signaling by NOTCH1 PEST Domain Mutants / Constitutive Signaling by NOTCH1 HD+PEST Domain Mutants / G1/S transition of mitotic cell cycle / CLEC7A (Dectin-1) signaling / SCF(Skp2)-mediated degradation of p27/p21 / FCERI mediated NF-kB activation / Interleukin-1 signaling / Orc1 removal from chromatin / Cyclin D associated events in G1 / Regulation of RUNX2 expression and activity / : / Regulation of PLK1 Activity at G2/M Transition / Downstream TCR signaling / Antigen processing: Ubiquitination & Proteasome degradation / Neddylation / protein-macromolecule adaptor activity / proteasome-mediated ubiquitin-dependent protein catabolic process / cell population proliferation / positive regulation of canonical NF-kappaB signal transduction / protein ubiquitination / ubiquitin protein ligase binding / positive regulation of DNA-templated transcription / nucleoplasm / nucleus / plasma membrane / cytosol / cytoplasm 類似検索 - 分子機能
TATA-binding protein interacting (TIP20) / Cullin-associated NEDD8-dissociated protein 1/2 / TATA-binding protein interacting (TIP20) / HEAT-like repeat / Cullin protein neddylation domain / Cullin, conserved site / Cullin family signature. / Cullin repeat-like-containing domain superfamily / Cullin protein, neddylation domain / Cullin ...TATA-binding protein interacting (TIP20) / Cullin-associated NEDD8-dissociated protein 1/2 / TATA-binding protein interacting (TIP20) / HEAT-like repeat / Cullin protein neddylation domain / Cullin, conserved site / Cullin family signature. / Cullin repeat-like-containing domain superfamily / Cullin protein, neddylation domain / Cullin / Cullin protein neddylation domain / Cullin / Cullin, N-terminal / Cullin homology domain / Cullin homology domain superfamily / Cullin family / Cullin family profile. / Armadillo-like helical / Armadillo-type fold / Winged helix DNA-binding domain superfamily / Winged helix-like DNA-binding domain superfamily 類似検索 - ドメイン・相同性
Cullin-associated NEDD8-dissociated protein 2 / Cullin-1 類似検索 - 構成要素
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)
R35GM138016
米国
引用
ジャーナル: Nat Commun / 年: 2025 タイトル: Molecular mechanisms of CAND2 in regulating SCF ubiquitin ligases. 著者: Kankan Wang / Lihong Li / Sebastian Kenny / Dailin Gan / Justin M Reitsma / Yun Zhou / Chittaranjan Das / Xing Liu / 要旨: Protein degradation orchestrated by SKP1·CUL1·F-box protein (SCF) ubiquitin ligases is a fundamental process essential for cellular and organismal function. The dynamic assembly of SCFs, ...Protein degradation orchestrated by SKP1·CUL1·F-box protein (SCF) ubiquitin ligases is a fundamental process essential for cellular and organismal function. The dynamic assembly of SCFs, facilitated by CAND1, ensures timely ubiquitination of diverse SCF target proteins. As a homolog of CAND1, CAND2 alone has been implicated in various human diseases, yet its functional mechanisms remain elusive. Here, we investigate the role of CAND2 in human cells and its distinct mode of action compared to CAND1. Using an array of quantitative assays, we demonstrate that CAND2 promotes SCF-mediated protein degradation as an F-box protein exchange factor. While CAND2 binds CUL1 with structure and affinity comparable to CAND1, it exhibits lower efficiency in exchanging F-box proteins. Kinetic measurements reveal a significantly higher K for CAND2-catalyzed SCF disassembly than CAND1, which explains the lower exchange efficiency of CAND2 and is likely due to conformations of the CAND2·SCF exchange intermediate complex being less favorable for F-box protein dissociation. Our study provides mechanistic insights into the biochemical and structural properties of CAND2, as well as its role in regulating cellular dynamics of SCFs, laying a foundation for understanding contributions of CAND2 to healthy and diseased human cells.