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- PDB-8or4: Partially dissociated CAND1-CUL1-RBX1-SKP1-SKP2-CKS1-CDK2 -

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Entry
Database: PDB / ID: 8or4
TitlePartially dissociated CAND1-CUL1-RBX1-SKP1-SKP2-CKS1-CDK2
Components
  • (Cyclin-dependent ...) x 2
  • (S-phase kinase-associated protein ...) x 2
  • Cullin-1
  • Cullin-associated NEDD8-dissociated protein 1
  • E3 ubiquitin-protein ligase RBX1
KeywordsLIGASE / CAND1 / substrate receptor exchange factor / cullin-RING ligase / CRL / SCF / neddylation / DCNL1 co-E3 / ubiquitin signaling
Function / homology
Function and homology information


SCF complex assembly / mitotic cell cycle phase transition / positive regulation of protein polyubiquitination / Parkin-FBXW7-Cul1 ubiquitin ligase complex / negative regulation of catalytic activity / F-box domain binding / Aberrant regulation of mitotic exit in cancer due to RB1 defects / PcG protein complex / cullin-RING-type E3 NEDD8 transferase / NEDD8 transferase activity ...SCF complex assembly / mitotic cell cycle phase transition / positive regulation of protein polyubiquitination / Parkin-FBXW7-Cul1 ubiquitin ligase complex / negative regulation of catalytic activity / F-box domain binding / Aberrant regulation of mitotic exit in cancer due to RB1 defects / PcG protein complex / cullin-RING-type E3 NEDD8 transferase / NEDD8 transferase activity / cullin-RING ubiquitin ligase complex / cellular response to chemical stress / positive regulation of ubiquitin protein ligase activity / Cul7-RING ubiquitin ligase complex / ubiquitin-dependent protein catabolic process via the C-end degron rule pathway / maintenance of protein location in nucleus / Loss of Function of FBXW7 in Cancer and NOTCH1 Signaling / positive regulation of protein autoubiquitination / cyclin-dependent protein serine/threonine kinase activator activity / protein neddylation / NEDD8 ligase activity / negative regulation of response to oxidative stress / Cul5-RING ubiquitin ligase complex / SCF ubiquitin ligase complex / Cul2-RING ubiquitin ligase complex / Cul4A-RING E3 ubiquitin ligase complex / ubiquitin-ubiquitin ligase activity / negative regulation of type I interferon production / SCF-dependent proteasomal ubiquitin-dependent protein catabolic process / Cul3-RING ubiquitin ligase complex / positive regulation of intracellular estrogen receptor signaling pathway / Cul4B-RING E3 ubiquitin ligase complex / ubiquitin ligase complex scaffold activity / cyclin A1-CDK2 complex / cyclin E2-CDK2 complex / cyclin E1-CDK2 complex / cyclin A2-CDK2 complex / positive regulation of DNA-templated DNA replication initiation / negative regulation of mitophagy / cyclin-dependent protein kinase activity / G2 Phase / Y chromosome / Phosphorylation of proteins involved in G1/S transition by active Cyclin E:Cdk2 complexes / positive regulation of heterochromatin formation / p53-Dependent G1 DNA Damage Response / Prolactin receptor signaling / X chromosome / PTK6 Regulates Cell Cycle / regulation of anaphase-promoting complex-dependent catabolic process / Defective binding of RB1 mutants to E2F1,(E2F2, E2F3) / centriole replication / Regulation of APC/C activators between G1/S and early anaphase / telomere maintenance in response to DNA damage / cullin family protein binding / centrosome duplication / Telomere Extension By Telomerase / G0 and Early G1 / protein K63-linked ubiquitination / positive regulation of RNA polymerase II transcription preinitiation complex assembly / protein monoubiquitination / Activation of the pre-replicative complex / ubiquitin ligase complex / cyclin-dependent kinase / ubiquitin-like ligase-substrate adaptor activity / cyclin-dependent protein serine/threonine kinase activity / positive regulation of double-strand break repair via homologous recombination / TP53 Regulates Transcription of Genes Involved in G1 Cell Cycle Arrest / Regulation of MITF-M-dependent genes involved in cell cycle and proliferation / Cajal body / protein K48-linked ubiquitination / Activation of ATR in response to replication stress / Cyclin E associated events during G1/S transition / Cyclin A/B1/B2 associated events during G2/M transition / Cyclin A:Cdk2-associated events at S phase entry / cyclin-dependent protein kinase holoenzyme complex / Nuclear events stimulated by ALK signaling in cancer / condensed chromosome / regulation of G2/M transition of mitotic cell cycle / mitotic G1 DNA damage checkpoint signaling / TBP-class protein binding / regulation of cellular response to insulin stimulus / positive regulation of TORC1 signaling / negative regulation of insulin receptor signaling pathway / cellular response to nitric oxide / post-translational protein modification / intrinsic apoptotic signaling pathway / cyclin binding / regulation of mitotic cell cycle / male germ cell nucleus / T cell activation / Regulation of BACH1 activity / MAP3K8 (TPL2)-dependent MAPK1/3 activation / molecular function activator activity / ubiquitin binding / animal organ morphogenesis / positive regulation of DNA replication / meiotic cell cycle / SCF-beta-TrCP mediated degradation of Emi1 / NIK-->noncanonical NF-kB signaling / Vpu mediated degradation of CD4
Similarity search - Function
TATA-binding protein interacting (TIP20) / Cullin-associated NEDD8-dissociated protein 1/2 / TATA-binding protein interacting (TIP20) / Cyclin-dependent kinase, regulatory subunit / Cyclin-dependent kinase, regulatory subunit superfamily / Cyclin-dependent kinase regulatory subunit / Cyclin-dependent kinases regulatory subunits signature 1. / Cyclin-dependent kinases regulatory subunits signature 2. / Cyclin-dependent kinase regulatory subunit / Leucine-rich repeat, cysteine-containing subtype ...TATA-binding protein interacting (TIP20) / Cullin-associated NEDD8-dissociated protein 1/2 / TATA-binding protein interacting (TIP20) / Cyclin-dependent kinase, regulatory subunit / Cyclin-dependent kinase, regulatory subunit superfamily / Cyclin-dependent kinase regulatory subunit / Cyclin-dependent kinases regulatory subunits signature 1. / Cyclin-dependent kinases regulatory subunits signature 2. / Cyclin-dependent kinase regulatory subunit / Leucine-rich repeat, cysteine-containing subtype / Leucine-rich repeat - CC (cysteine-containing) subfamily / A Receptor for Ubiquitination Targets / F-box domain profile. / HEAT-like repeat / F-box-like domain superfamily / F-box-like / SKP1 component, dimerisation / S-phase kinase-associated protein 1 / SKP1-like, dimerisation domain superfamily / Skp1 family, dimerisation domain / F-box domain / Zinc finger, RING-H2-type / RING-H2 zinc finger domain / 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. / S-phase kinase-associated protein 1-like / SKP1 component, POZ domain / Skp1 family, tetramerisation domain / Found in Skp1 protein family / : / SKP1/BTB/POZ domain superfamily / Leucine-rich repeat domain superfamily / Zinc finger RING-type profile. / Zinc finger, RING-type / Armadillo-like helical / Armadillo-type fold / Zinc finger, RING/FYVE/PHD-type / Winged helix DNA-binding domain superfamily / Serine/threonine-protein kinase, active site / Serine/Threonine protein kinases active-site signature. / Winged helix-like DNA-binding domain superfamily / Protein kinase domain / Serine/Threonine protein kinases, catalytic domain / Protein kinase, ATP binding site / Protein kinases ATP-binding region signature. / Protein kinase domain profile. / Protein kinase domain / Protein kinase-like domain superfamily
Similarity search - Domain/homology
Cyclin-dependent kinase 2 / Cyclin-dependent kinases regulatory subunit 1 / E3 ubiquitin-protein ligase RBX1 / S-phase kinase-associated protein 1 / S-phase kinase-associated protein 2 / Cullin-1 / Cullin-associated NEDD8-dissociated protein 1
Similarity search - Component
Biological speciesHomo sapiens (human)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.8 Å
AuthorsShaaban, M. / Clapperton, J.A. / Ding, S. / Maeots, M.E. / Enchev, R.I.
Funding support United Kingdom, 4items
OrganizationGrant numberCountry
The Francis Crick Institute United Kingdom
Cancer Research UKCC2059 United Kingdom
Medical Research Council (MRC, United Kingdom)CC2059 United Kingdom
Wellcome TrustCC2059 United Kingdom
CitationJournal: Mol Cell / Year: 2023
Title: Structural and mechanistic insights into the CAND1-mediated SCF substrate receptor exchange.
Authors: Mohammed Shaaban / Julie A Clapperton / Shan Ding / Simone Kunzelmann / Märt-Erik Mäeots / Sarah L Maslen / J Mark Skehel / Radoslav I Enchev /
Abstract: 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.
History
DepositionApr 13, 2023Deposition site: PDBE / Processing site: PDBE
Revision 1.0Jun 28, 2023Provider: repository / Type: Initial release
Revision 1.1Jul 19, 2023Group: Database references / Category: citation / Item: _citation.journal_volume / _citation.page_first
Revision 1.2Jul 24, 2024Group: Data collection / Category: chem_comp_atom / chem_comp_bond / em_admin / Item: _em_admin.last_update

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

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Assembly

Deposited unit
A: Cullin-1
B: E3 ubiquitin-protein ligase RBX1
C: Cullin-associated NEDD8-dissociated protein 1
D: S-phase kinase-associated protein 1
E: S-phase kinase-associated protein 2
G: Cyclin-dependent kinases regulatory subunit 1
H: Cyclin-dependent kinase 2


Theoretical massNumber of molelcules
Total (without water)353,2657
Polymers353,2657
Non-polymers00
Water00
1


  • Idetical with deposited unit
  • defined by author
  • Evidence: electron microscopy
TypeNameSymmetry operationNumber
identity operation1_5551

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Components

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Protein , 3 types, 3 molecules ABC

#1: Protein Cullin-1 / CUL-1


Mass: 93730.672 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: CUL1 / Production host: Spodoptera frugiperda (fall armyworm) / References: UniProt: Q13616
#2: Protein E3 ubiquitin-protein ligase RBX1 / E3 ubiquitin-protein transferase RBX1 / Protein ZYP / RING finger protein 75 / RING-box protein 1 / ...E3 ubiquitin-protein transferase RBX1 / Protein ZYP / RING finger protein 75 / RING-box protein 1 / Rbx1 / Regulator of cullins 1 / ROC1


Mass: 12289.977 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: RBX1, RNF75, ROC1 / Production host: Spodoptera frugiperda (fall armyworm)
References: UniProt: P62877, RING-type E3 ubiquitin transferase, cullin-RING-type E3 NEDD8 transferase
#3: Protein Cullin-associated NEDD8-dissociated protein 1 / Cullin-associated and neddylation-dissociated protein 1 / TBP-interacting protein of 120 kDa A / ...Cullin-associated and neddylation-dissociated protein 1 / TBP-interacting protein of 120 kDa A / TBP-interacting protein 120A / p120 CAND1


Mass: 137358.219 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: CAND1, KIAA0829, TIP120, TIP120A / Production host: Escherichia coli BL21(DE3) (bacteria) / References: UniProt: Q86VP6

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S-phase kinase-associated protein ... , 2 types, 2 molecules DE

#4: Protein S-phase kinase-associated protein 1 / Cyclin-A/CDK2-associated protein p19 / p19A / Organ of Corti protein 2 / OCP-2 / Organ of Corti ...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


Mass: 18679.965 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: SKP1, EMC19, OCP2, SKP1A, TCEB1L / Production host: Escherichia coli BL21(DE3) (bacteria) / References: UniProt: P63208
#5: Protein S-phase kinase-associated protein 2 / Cyclin-A/CDK2-associated protein p45 / F-box protein Skp2 / F-box/LRR-repeat protein 1 / p45skp2


Mass: 48335.312 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: SKP2, FBXL1 / Production host: Escherichia coli BL21(DE3) (bacteria) / References: UniProt: Q13309

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Cyclin-dependent ... , 2 types, 2 molecules GH

#6: Protein Cyclin-dependent kinases regulatory subunit 1 / CKS-1


Mass: 8894.114 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: CKS1B, CKS1, PNAS-143, PNAS-16 / Production host: Escherichia coli BL21(DE3) (bacteria) / References: UniProt: P61024
#7: Protein Cyclin-dependent kinase 2 / Cell division protein kinase 2 / p33 protein kinase


Mass: 33976.488 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: CDK2, CDKN2 / Production host: Spodoptera frugiperda (fall armyworm) / References: UniProt: P24941, cyclin-dependent kinase

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Experimental details

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Experiment

ExperimentMethod: ELECTRON MICROSCOPY
EM experimentAggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction

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Sample preparation

ComponentName: Partially dissociated CAND1-CUL1-RBX1-SKP1-SKP2-CKS1-CDK2
Type: COMPLEX / Entity ID: all / Source: RECOMBINANT
Molecular weightExperimental value: NO
Source (natural)Organism: Homo sapiens (human)
Source (recombinant)Organism: Escherichia coli BL21(DE3) (bacteria)
Buffer solutionpH: 7.5
Buffer component
IDConc.NameBuffer-ID
125 mMHEPES1
2150 mMNaCl1
31 mMTCEP1
40.1 percentoctyl glucoside1
SpecimenEmbedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES / Details: CAND1-CUL1-RBX1-SKP1-SKP2-CKS1-CDK2-CyclinE-DCNL1
VitrificationInstrument: FEI VITROBOT MARK IV / Cryogen name: ETHANE / Humidity: 100 % / Chamber temperature: 277.15 K

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Electron microscopy imaging

Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company
MicroscopyModel: FEI TITAN KRIOS
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM
Electron lensMode: BRIGHT FIELD / Nominal magnification: 130000 X / Nominal defocus max: 2500 nm / Nominal defocus min: 700 nm
Image recordingElectron dose: 49.1 e/Å2 / Film or detector model: GATAN K2 SUMMIT (4k x 4k)

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Processing

CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
SymmetryPoint symmetry: C1 (asymmetric)
3D reconstructionResolution: 3.8 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 399891 / Symmetry type: POINT
Refine LS restraints
Refine-IDTypeDev idealNumber
ELECTRON MICROSCOPYf_bond_d0.00315271
ELECTRON MICROSCOPYf_angle_d0.61420693
ELECTRON MICROSCOPYf_dihedral_angle_d4.6682075
ELECTRON MICROSCOPYf_chiral_restr0.0372512
ELECTRON MICROSCOPYf_plane_restr0.0042630

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