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- PDB-8wqg: cryo-EM structure of neddylated CUL2-RBX1-ELOB-ELOC-FEM1B bound w... -

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Basic information

Entry
Database: PDB / ID: 8wqg
Titlecryo-EM structure of neddylated CUL2-RBX1-ELOB-ELOC-FEM1B bound with the C-degron of CCDC89 (conformation 1)
Components
  • Cullin-2
  • E3 ubiquitin-protein ligase RBX1, N-terminally processed
  • Elongin-B
  • Elongin-C
  • NEDD8
  • Protein fem-1 homolog B
KeywordsLIGASE / E3 ubiquitin ligase / Pro/C-degron
Function / homology
Function and homology information


cellular response to camptothecin / negative regulation of beige fat cell differentiation / cullin-RING-type E3 NEDD8 transferase / NEDD8 transferase activity / negative regulation of mitophagy / cullin-RING ubiquitin ligase complex / regulation of xenophagy / target-directed miRNA degradation / Loss of Function of FBXW7 in Cancer and NOTCH1 Signaling / cellular response to chemical stress ...cellular response to camptothecin / negative regulation of beige fat cell differentiation / cullin-RING-type E3 NEDD8 transferase / NEDD8 transferase activity / negative regulation of mitophagy / cullin-RING ubiquitin ligase complex / regulation of xenophagy / target-directed miRNA degradation / Loss of Function of FBXW7 in Cancer and NOTCH1 Signaling / cellular response to chemical stress / Cul7-RING ubiquitin ligase complex / elongin complex / death receptor binding / regulation of extrinsic apoptotic signaling pathway via death domain receptors / regulation of cell cycle process / neural crest cell differentiation / RNA polymerase II transcription initiation surveillance / positive regulation of protein autoubiquitination / protein neddylation / regulation of BMP signaling pathway / NEDD8 ligase activity / regulation of mitophagy / negative regulation of response to oxidative stress / regulation of centrosome duplication / protein K27-linked ubiquitination / VCB complex / Cul5-RING ubiquitin ligase complex / regulation of TOR signaling / ubiquitin-ubiquitin ligase activity / ubiquitin-dependent protein catabolic process via the C-end degron rule pathway / Cul2-RING ubiquitin ligase complex / SCF ubiquitin ligase complex / negative regulation of DNA-templated DNA replication / regulation of mitotic cytokinesis / Cul3-RING ubiquitin ligase complex / regulation of DNA damage checkpoint / negative regulation of type I interferon production / regulation of miRNA-mediated gene silencing / regulation of natural killer cell activation / SCF-dependent proteasomal ubiquitin-dependent protein catabolic process / Prolactin receptor signaling / regulation of cell cycle phase transition / Cul4A-RING E3 ubiquitin ligase complex / Cul4-RING E3 ubiquitin ligase complex / regulation of stem cell population maintenance / Cul4B-RING E3 ubiquitin ligase complex / TGF-beta receptor signaling activates SMADs / ubiquitin ligase complex scaffold activity / negative regulation of adipose tissue development / regulation of proteolysis / regulation of cellular response to stress / Pausing and recovery of Tat-mediated HIV elongation / Tat-mediated HIV elongation arrest and recovery / limb development / HIV elongation arrest and recovery / Pausing and recovery of HIV elongation / regulation of postsynapse assembly / protein monoubiquitination / anatomical structure morphogenesis / cullin family protein binding / Tat-mediated elongation of the HIV-1 transcript / ubiquitin ligase complex / Formation of HIV-1 elongation complex containing HIV-1 Tat / regulation of DNA-templated DNA replication initiation / centrosome duplication / Formation of HIV elongation complex in the absence of HIV Tat / cilium assembly / ubiquitin-like ligase-substrate adaptor activity / RNA Polymerase II Transcription Elongation / Formation of RNA Pol II elongation complex / intrinsic apoptotic signaling pathway / ribosome-associated ubiquitin-dependent protein catabolic process / signal transduction in response to DNA damage / negative regulation of insulin receptor signaling pathway / Nuclear events stimulated by ALK signaling in cancer / protein K48-linked ubiquitination / RNA Polymerase II Pre-transcription Events / regulation of cellular response to insulin stimulus / positive regulation of TORC1 signaling / transcription-coupled nucleotide-excision repair / post-translational protein modification / cellular response to amino acid stimulus / regulation of embryonic development / replication fork processing / transcription corepressor binding / protein modification process / negative regulation of canonical NF-kappaB signal transduction / rescue of stalled cytosolic ribosome / regulation of mitotic cell cycle / site of DNA damage / Regulation of BACH1 activity / T cell activation / TP53 Regulates Transcription of DNA Repair Genes / G1/S transition of mitotic cell cycle / negative regulation of canonical Wnt signaling pathway / transcription initiation at RNA polymerase II promoter / epigenetic regulation of gene expression / Degradation of DVL / Degradation of CRY and PER proteins / nucleotide-excision repair
Similarity search - Function
Nedd8-like ubiquitin / Zinc finger, RING-H2-type / RING-H2 zinc finger domain / Elongin-C / Elongin B / : / Cullin protein neddylation domain / Cullin, conserved site / Cullin family signature. / Cullin, N-terminal ...Nedd8-like ubiquitin / Zinc finger, RING-H2-type / RING-H2 zinc finger domain / Elongin-C / Elongin B / : / Cullin protein neddylation domain / Cullin, conserved site / Cullin family signature. / Cullin, N-terminal / Cullin repeat-like-containing domain superfamily / Cullin protein, neddylation domain / Cullin / Cullin protein neddylation domain / Cullin alpha solenoid domain / Cullin / : / Cullin alpha+beta domain / Cullin homology domain / Cullin homology domain superfamily / Cullin family profile. / S-phase kinase-associated protein 1-like / SKP1 component, POZ domain / Skp1 family, tetramerisation domain / Found in Skp1 protein family / Ankyrin repeat / SKP1/BTB/POZ domain superfamily / Ankyrin repeat profile. / Ankyrin repeats (3 copies) / Ankyrin repeat region circular profile. / ankyrin repeats / Ankyrin repeat / Ankyrin repeat-containing domain superfamily / Zinc finger RING-type profile. / Zinc finger, RING-type / : / Ubiquitin domain signature. / Ubiquitin conserved site / Ubiquitin domain / Ubiquitin family / Ubiquitin homologues / Ubiquitin domain profile. / Ubiquitin-like domain / Zinc finger, RING/FYVE/PHD-type / Ubiquitin-like domain superfamily / Winged helix DNA-binding domain superfamily / Winged helix-like DNA-binding domain superfamily
Similarity search - Domain/homology
E3 ubiquitin-protein ligase RBX1 / Cullin-2 / Elongin-C / Elongin-B / Ubiquitin-like protein NEDD8 / Protein fem-1 homolog B
Similarity search - Component
Biological speciesHomo sapiens (human)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 4.09 Å
AuthorsChen, X. / Zhang, K. / Xu, C.
Funding support China, 1items
OrganizationGrant numberCountry
National Natural Science Foundation of China (NSFC) China
CitationJournal: Nat Commun / Year: 2024
Title: Mechanism of Ψ-Pro/C-degron recognition by the CRL2 ubiquitin ligase.
Authors: Xinyan Chen / Anat Raiff / Shanshan Li / Qiong Guo / Jiahai Zhang / Hualin Zhou / Richard T Timms / Xuebiao Yao / Stephen J Elledge / Itay Koren / Kaiming Zhang / Chao Xu /
Abstract: The E3 ligase-degron interaction determines the specificity of the ubiquitin‒proteasome system. We recently discovered that FEM1B, a substrate receptor of Cullin 2-RING ligase (CRL2), recognizes C- ...The E3 ligase-degron interaction determines the specificity of the ubiquitin‒proteasome system. We recently discovered that FEM1B, a substrate receptor of Cullin 2-RING ligase (CRL2), recognizes C-degrons containing a C-terminal proline. By solving several cryo-EM structures of CRL2 bound to different C-degrons, we elucidate the dimeric assembly of the complex. Furthermore, we reveal distinct dimerization states of unmodified and neddylated CRL2 to uncover the NEDD8-mediated activation mechanism of CRL2. Our research also indicates that, FEM1B utilizes a bipartite mechanism to recognize both the C-terminal proline and an upstream aromatic residue within the substrate. These structural findings, complemented by in vitro ubiquitination and in vivo cell-based assays, demonstrate that CRL2-mediated polyubiquitination and subsequent protein turnover depend on both FEM1B-degron interactions and the dimerization state of the E3 ligase complex. Overall, this study deepens our molecular understanding of how Cullin-RING E3 ligase substrate selection mediates protein turnover.
History
DepositionOct 11, 2023Deposition site: PDBJ / Processing site: PDBC
Revision 1.0Apr 3, 2024Provider: repository / Type: Initial release
Revision 1.1May 8, 2024Group: Database references / Category: citation / citation_author
Item: _citation.country / _citation.journal_abbrev ..._citation.country / _citation.journal_abbrev / _citation.journal_id_CSD / _citation.journal_id_ISSN / _citation.journal_volume / _citation.page_first / _citation.page_last / _citation.pdbx_database_id_DOI / _citation.pdbx_database_id_PubMed / _citation.title / _citation.year
Revision 1.2Oct 9, 2024Group: Data collection / Structure summary
Category: em_admin / pdbx_entry_details / pdbx_modification_feature
Item: _em_admin.last_update / _pdbx_entry_details.has_protein_modification

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
D: Elongin-B
F: E3 ubiquitin-protein ligase RBX1, N-terminally processed
B: Elongin-C
C: Cullin-2
J: E3 ubiquitin-protein ligase RBX1, N-terminally processed
E: Cullin-2
N: NEDD8
H: Elongin-C
I: Elongin-B
K: NEDD8
A: Protein fem-1 homolog B
G: Protein fem-1 homolog B
hetero molecules


Theoretical massNumber of molelcules
Total (without water)402,85618
Polymers402,46412
Non-polymers3926
Water00
1


  • Idetical with deposited unit
  • defined by author
  • Evidence: electron microscopy, not applicable
TypeNameSymmetry operationNumber
identity operation1_5551

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Components

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Protein , 6 types, 12 molecules DIFJBHCENKAG

#1: Protein Elongin-B / EloB / Elongin 18 kDa subunit / RNA polymerase II transcription factor SIII subunit B / SIII p18 / ...EloB / Elongin 18 kDa subunit / RNA polymerase II transcription factor SIII subunit B / SIII p18 / Transcription elongation factor B polypeptide 2


Mass: 13147.781 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: ELOB, TCEB2 / Production host: Escherichia coli (E. coli) / References: UniProt: Q15370
#2: Protein E3 ubiquitin-protein ligase RBX1, N-terminally processed / E3 ubiquitin-protein transferase RBX1 / N-terminally processed


Mass: 11196.830 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: RBX1, RNF75, ROC1 / Production host: Escherichia coli (E. coli) / References: UniProt: P62877
#3: Protein Elongin-C / EloC / Elongin 15 kDa subunit / RNA polymerase II transcription factor SIII subunit C / SIII p15 / ...EloC / Elongin 15 kDa subunit / RNA polymerase II transcription factor SIII subunit C / SIII p15 / Transcription elongation factor B polypeptide 1


Mass: 10843.420 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: ELOC, TCEB1 / Production host: Escherichia coli (E. coli) / References: UniProt: Q15369
#4: Protein Cullin-2 / CUL-2


Mass: 87114.750 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: CUL2 / Production host: Escherichia coli (E. coli) / References: UniProt: Q13617
#5: Protein NEDD8 / Neddylin / Neural precursor cell expressed developmentally down-regulated protein 8 / NEDD-8 / ...Neddylin / Neural precursor cell expressed developmentally down-regulated protein 8 / NEDD-8 / Ubiquitin-like protein Nedd8


Mass: 8573.978 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: NEDD8 / Production host: Escherichia coli (E. coli) / References: UniProt: Q15843
#6: Protein Protein fem-1 homolog B / FEM1b / FEM1-beta / Fem-1-like death receptor-binding protein alpha / Fem-1-like in apoptotic ...FEM1b / FEM1-beta / Fem-1-like death receptor-binding protein alpha / Fem-1-like in apoptotic pathway protein alpha / F1A-alpha


Mass: 70355.062 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: FEM1B, F1AA, KIAA0396 / Production host: Escherichia coli (E. coli) / References: UniProt: Q9UK73

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Non-polymers , 1 types, 6 molecules

#7: Chemical
ChemComp-ZN / ZINC ION


Mass: 65.409 Da / Num. of mol.: 6 / Source method: obtained synthetically / Formula: Zn

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Details

Has ligand of interestN
Has protein modificationY

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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: cryo-EM structure of neddylated CUL2-RBX1-ELOB-ELOC-FEM1B bound with the C-degron of CCDC89 (conformation 1)
Type: COMPLEX / Entity ID: #1-#6 / Source: MULTIPLE SOURCES
Source (natural)Organism: Homo sapiens (human)
Source (recombinant)Organism: Escherichia coli (E. coli)
Buffer solutionpH: 7.5
SpecimenConc.: 5 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
Specimen supportGrid material: COPPER
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 defocus max: 2900 nm / Nominal defocus min: 1500 nm
Specimen holderCryogen: NITROGEN
Image recordingElectron dose: 57.6 e/Å2 / Film or detector model: GATAN K3 BIOQUANTUM (6k x 4k) / Num. of real images: 4223
EM imaging opticsEnergyfilter name: GIF Bioquantum / Energyfilter slit width: 20 eV

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Processing

EM software
IDNameVersionCategory
2cryoSPARCimage acquisition
9PHENIX1.20.1_4487:model refinement
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
3D reconstructionResolution: 4.09 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 102432 / Symmetry type: POINT
Refine LS restraints
Refine-IDTypeDev idealNumber
ELECTRON MICROSCOPYf_bond_d0.00327339
ELECTRON MICROSCOPYf_angle_d0.57636973
ELECTRON MICROSCOPYf_dihedral_angle_d4.8633676
ELECTRON MICROSCOPYf_chiral_restr0.0424179
ELECTRON MICROSCOPYf_plane_restr0.0044764

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