positive regulation of protein neddylation / SCF complex assembly / ubiquitin-like protein binding / Parkin-FBXW7-Cul1 ubiquitin ligase complex / regulation of protein neddylation / negative regulation of catalytic activity / cullin-RING-type E3 NEDD8 transferase / cellular response to chemical stress / NEDD8 transferase activity / cullin-RING ubiquitin ligase complex ...positive regulation of protein neddylation / SCF complex assembly / ubiquitin-like protein binding / Parkin-FBXW7-Cul1 ubiquitin ligase complex / regulation of protein neddylation / negative regulation of catalytic activity / cullin-RING-type E3 NEDD8 transferase / cellular response to chemical stress / NEDD8 transferase activity / cullin-RING ubiquitin ligase complex / Cul7-RING ubiquitin ligase complex / ubiquitin-dependent protein catabolic process via the C-end degron rule pathway / Loss of Function of FBXW7 in Cancer and NOTCH1 Signaling / positive regulation of protein autoubiquitination / protein neddylation / ubiquitin conjugating enzyme binding / NEDD8 ligase activity / Cul5-RING ubiquitin ligase complex / negative regulation of response to oxidative stress / Cul4A-RING E3 ubiquitin ligase complex / ubiquitin-ubiquitin ligase activity / SCF ubiquitin ligase complex / Cul2-RING ubiquitin ligase complex / negative regulation of type I interferon production / Cul4B-RING E3 ubiquitin ligase complex / ubiquitin ligase complex scaffold activity / SCF-dependent proteasomal ubiquitin-dependent protein catabolic process / Cul3-RING ubiquitin ligase complex / Prolactin receptor signaling / protein monoubiquitination / cullin family protein binding / regulation of protein ubiquitination / positive regulation of RNA polymerase II transcription preinitiation complex assembly / protein K48-linked ubiquitination / Nuclear events stimulated by ALK signaling in cancer / ubiquitin ligase complex / positive regulation of TORC1 signaling / T cell activation / TBP-class protein binding / regulation of cellular response to insulin stimulus / Regulation of BACH1 activity / intrinsic apoptotic signaling pathway / MAP3K8 (TPL2)-dependent MAPK1/3 activation / post-translational protein modification / SCF-beta-TrCP mediated degradation of Emi1 / NIK-->noncanonical NF-kB signaling / Degradation of DVL / Dectin-1 mediated noncanonical NF-kB signaling / Recognition of DNA damage by PCNA-containing replication complex / Degradation of GLI1 by the proteasome / Activation of NF-kappaB in B cells / animal organ morphogenesis / Negative regulation of NOTCH4 signaling / cellular response to amino acid stimulus / Iron uptake and transport / GSK3B and BTRC:CUL1-mediated-degradation of NFE2L2 / Vif-mediated degradation of APOBEC3G / Hedgehog 'on' state / Degradation of GLI2 by the proteasome / GLI3 is processed to GLI3R by the proteasome / DNA Damage Recognition in GG-NER / FBXL7 down-regulates AURKA during mitotic entry and in early mitosis / RING-type E3 ubiquitin transferase / Degradation of beta-catenin by the destruction complex / negative regulation of canonical Wnt signaling pathway / Oxygen-dependent proline hydroxylation of Hypoxia-inducible Factor Alpha / Dual Incision in GG-NER / Evasion by RSV of host interferon responses / NOTCH1 Intracellular Domain Regulates Transcription / Transcription-Coupled Nucleotide Excision Repair (TC-NER) / Formation of TC-NER Pre-Incision Complex / 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 / Regulation of expression of SLITs and ROBOs / Formation of Incision Complex in GG-NER / FCERI mediated NF-kB activation / Interleukin-1 signaling / Orc1 removal from chromatin / Dual incision in TC-NER / G1/S transition of mitotic cell cycle / Regulation of RAS by GAPs / Gap-filling DNA repair synthesis and ligation in TC-NER / protein polyubiquitination / positive regulation of protein catabolic process / Regulation of RUNX2 expression and activity / Cyclin D associated events in G1 / cellular response to UV / Regulation of PLK1 Activity at G2/M Transition / KEAP1-NFE2L2 pathway / MAPK cascade / ubiquitin protein ligase activity / positive regulation of proteasomal ubiquitin-dependent protein catabolic process / Circadian Clock / Antigen processing: Ubiquitination & Proteasome degradation / Downstream TCR signaling / protein-macromolecule adaptor activity / Neddylation / ubiquitin-dependent protein catabolic process 類似検索 - 分子機能
ジャーナル: Mol Cell / 年: 2023 タイトル: Structural and mechanistic insights into the CAND1-mediated SCF substrate receptor exchange. 著者: Mohammed Shaaban / Julie A Clapperton / Shan Ding / Simone Kunzelmann / Märt-Erik Mäeots / Sarah L Maslen / J Mark Skehel / Radoslav I Enchev / 要旨: Modular SCF (SKP1-CUL1-Fbox) ubiquitin E3 ligases orchestrate multiple cellular pathways in eukaryotes. Their variable SKP1-Fbox substrate receptor (SR) modules enable regulated substrate recruitment ...Modular SCF (SKP1-CUL1-Fbox) ubiquitin E3 ligases orchestrate multiple cellular pathways in eukaryotes. Their variable SKP1-Fbox substrate receptor (SR) modules enable regulated substrate recruitment and subsequent proteasomal degradation. CAND proteins are essential for the efficient and timely exchange of SRs. To gain structural understanding of the underlying molecular mechanism, we reconstituted a human CAND1-driven exchange reaction of substrate-bound SCF alongside its co-E3 ligase DCNL1 and visualized it by cryo-EM. We describe high-resolution structural intermediates, including a ternary CAND1-SCF complex, as well as conformational and compositional intermediates representing SR- or CAND1-dissociation. We describe in molecular detail how CAND1-induced conformational changes in CUL1/RBX1 provide an optimized DCNL1-binding site and reveal an unexpected dual role for DCNL1 in CAND1-SCF dynamics. Moreover, a partially dissociated CAND1-SCF conformation accommodates cullin neddylation, leading to CAND1 displacement. Our structural findings, together with functional biochemical assays, help formulate a detailed model for CAND-SCF regulation.