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- PDB-8k9i: Structure of CUL3-RBX1-KLHL22 complex without CUL3 NA motif -

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Basic information

Entry
Database: PDB / ID: 8k9i
TitleStructure of CUL3-RBX1-KLHL22 complex without CUL3 NA motif
Components
  • Cullin-3
  • E3 ubiquitin-protein ligase RBX1, N-terminally processed
  • Kelch-like protein 22
KeywordsLIGASE / Cullin Ring E3 ubiquitin ligase
Function / homology
Function and homology information


positive regulation of mitotic cell cycle phase transition / trophectodermal cellular morphogenesis / liver morphogenesis / POZ domain binding / polar microtubule / COPII vesicle coating / regulation protein catabolic process at postsynapse / anaphase-promoting complex-dependent catabolic process / nuclear protein quality control by the ubiquitin-proteasome system / cellular response to L-leucine ...positive regulation of mitotic cell cycle phase transition / trophectodermal cellular morphogenesis / liver morphogenesis / POZ domain binding / polar microtubule / COPII vesicle coating / regulation protein catabolic process at postsynapse / anaphase-promoting complex-dependent catabolic process / nuclear protein quality control by the ubiquitin-proteasome system / cellular response to L-leucine / negative regulation of beige fat cell differentiation / RHOBTB3 ATPase cycle / cullin-RING-type E3 NEDD8 transferase / NEDD8 transferase activity / positive regulation of T cell mediated immune response to tumor cell / embryonic cleavage / cullin-RING ubiquitin ligase complex / Cul7-RING ubiquitin ligase complex / cellular response to chemical stress / Loss of Function of FBXW7 in Cancer and NOTCH1 Signaling / positive regulation of mitotic metaphase/anaphase transition / positive regulation of protein autoubiquitination / RNA polymerase II transcription initiation surveillance / Notch binding / cell projection organization / protein neddylation / fibroblast apoptotic process / NEDD8 ligase activity / negative regulation of Rho protein signal transduction / RHOBTB1 GTPase cycle / protein K27-linked ubiquitination / negative regulation of response to oxidative stress / VCB complex / Cul5-RING ubiquitin ligase complex / ubiquitin-ubiquitin ligase activity / stem cell division / SCF ubiquitin ligase complex / ubiquitin-dependent protein catabolic process via the C-end degron rule pathway / mitotic metaphase chromosome alignment / Cul2-RING ubiquitin ligase complex / Cul3-RING ubiquitin ligase complex / mitotic spindle assembly checkpoint signaling / negative regulation of type I interferon production / stress fiber assembly / SCF-dependent proteasomal ubiquitin-dependent protein catabolic process / positive regulation of cytokinesis / Cul4A-RING E3 ubiquitin ligase complex / Cul4-RING E3 ubiquitin ligase complex / Prolactin receptor signaling / negative regulation of mitophagy / Cul4B-RING E3 ubiquitin ligase complex / ubiquitin ligase complex scaffold activity / mitotic sister chromatid segregation / cullin family protein binding / endoplasmic reticulum to Golgi vesicle-mediated transport / protein monoubiquitination / RHOBTB2 GTPase cycle / sperm flagellum / protein autoubiquitination / intercellular bridge / ubiquitin-like ligase-substrate adaptor activity / site of DNA damage / signal transduction in response to DNA damage / Nuclear events stimulated by ALK signaling in cancer / transcription-coupled nucleotide-excision repair / protein K48-linked ubiquitination / negative regulation of insulin receptor signaling pathway / gastrulation / 14-3-3 protein binding / regulation of cellular response to insulin stimulus / positive regulation of TORC1 signaling / intrinsic apoptotic signaling pathway / post-translational protein modification / cyclin binding / T cell activation / positive regulation of protein ubiquitination / Regulation of BACH1 activity / negative regulation of autophagy / integrin-mediated signaling pathway / negative regulation of canonical NF-kappaB signal transduction / kidney development / cellular response to amino acid stimulus / Degradation of DVL / Degradation of CRY and PER proteins / G1/S transition of mitotic cell cycle / Degradation of GLI1 by the proteasome / negative regulation of canonical Wnt signaling pathway / GSK3B and BTRC:CUL1-mediated-degradation of NFE2L2 / Negative regulation of NOTCH4 signaling / Recognition of DNA damage by PCNA-containing replication complex / Hedgehog 'on' state / Vif-mediated degradation of APOBEC3G / FBXL7 down-regulates AURKA during mitotic entry and in early mitosis / Ubiquitin-Mediated Degradation of Phosphorylated Cdc25A / Degradation of GLI2 by the proteasome / GLI3 is processed to GLI3R by the proteasome / RING-type E3 ubiquitin transferase / Degradation of beta-catenin by the destruction complex / Oxygen-dependent proline hydroxylation of Hypoxia-inducible Factor Alpha / DNA Damage Recognition in GG-NER
Similarity search - Function
Kelch-like protein 22 / KLHDC2/KLHL20/DRC7 Kelch-repeats domain / Zinc finger, RING-H2-type / RING-H2 zinc finger domain / BTB-kelch protein / BTB/Kelch-associated / BTB And C-terminal Kelch / BTB And C-terminal Kelch / Kelch / Kelch motif ...Kelch-like protein 22 / KLHDC2/KLHL20/DRC7 Kelch-repeats domain / Zinc finger, RING-H2-type / RING-H2 zinc finger domain / BTB-kelch protein / BTB/Kelch-associated / BTB And C-terminal Kelch / BTB And C-terminal Kelch / Kelch / Kelch motif / Cullin, N-terminal / Cullin protein neddylation domain / : / Kelch repeat type 1 / Cullin, conserved site / Cullin alpha solenoid domain / Cullin family signature. / Cullin repeat-like-containing domain superfamily / Cullin protein, neddylation domain / Cullin / Cullin protein neddylation domain / Cullin / : / Cullin alpha+beta domain / Cullin homology domain / Cullin homology domain superfamily / Cullin family profile. / Kelch-type beta propeller / BTB/POZ domain / BTB domain profile. / Broad-Complex, Tramtrack and Bric a brac / BTB/POZ domain / SKP1/BTB/POZ domain superfamily / Zinc finger RING-type profile. / Zinc finger, RING-type / Zinc finger, RING/FYVE/PHD-type / Winged helix DNA-binding domain superfamily / Winged helix-like DNA-binding domain superfamily
Similarity search - Domain/homology
E3 ubiquitin-protein ligase RBX1 / Cullin-3 / Kelch-like protein 22
Similarity search - Component
Biological speciesHomo sapiens (human)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 4.2 Å
AuthorsWang, W. / Ling, L. / Dai, Z. / Zuo, P. / Yin, Y.
Funding support China, 4items
OrganizationGrant numberCountry
National Natural Science Foundation of China (NSFC)2021YFA1300601 China
National Natural Science Foundation of China (NSFC)82030081 China
National Natural Science Foundation of China (NSFC)81874235 China
National Natural Science Foundation of China (NSFC)31800626 China
CitationJournal: Nat Commun / Year: 2024
Title: A conserved N-terminal motif of CUL3 contributes to assembly and E3 ligase activity of CRL3.
Authors: Weize Wang / Ling Liang / Zonglin Dai / Peng Zuo / Shang Yu / Yishuo Lu / Dian Ding / Hongyi Chen / Hui Shan / Yan Jin / Youdong Mao / Yuxin Yin /
Abstract: The CUL3-RING E3 ubiquitin ligases (CRL3s) play an essential role in response to extracellular nutrition and stress stimuli. The ubiquitin ligase function of CRL3s is activated through dimerization. ...The CUL3-RING E3 ubiquitin ligases (CRL3s) play an essential role in response to extracellular nutrition and stress stimuli. The ubiquitin ligase function of CRL3s is activated through dimerization. However, how and why such a dimeric assembly is required for its ligase activity remains elusive. Here, we report the cryo-EM structure of the dimeric CRL3 complex and reveal a conserved N-terminal motif in CUL3 that contributes to the dimerization assembly and the E3 ligase activity of CRL3. We show that deletion of the CUL3 N-terminal motif impairs dimeric assembly and the E3 ligase activity of both CRL3 and several other CRL3s. In addition, we found that the dynamics of dimeric assembly of CRL3 generates a variable ubiquitination zone, potentially facilitating substrate recognition and ubiquitination. These findings demonstrate that a CUL3 N-terminal motif participates in the assembly process and provide insights into the assembly and activation of CRL3s.
History
DepositionAug 1, 2023Deposition site: PDBJ / Processing site: PDBJ
Revision 1.0May 29, 2024Provider: repository / Type: Initial release

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

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Assembly

Deposited unit
C: Cullin-3
K: Kelch-like protein 22
L: Kelch-like protein 22
R: E3 ubiquitin-protein ligase RBX1, N-terminally processed


Theoretical massNumber of molelcules
Total (without water)140,4534
Polymers140,4534
Non-polymers00
Water00
1


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

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Components

#1: Protein Cullin-3


Mass: 87432.312 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: CUL3 / Production host: Spodoptera frugiperda (fall armyworm) / References: UniProt: Q13618
#2: Protein Kelch-like protein 22


Mass: 20365.340 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: KLHL22 / Production host: Spodoptera frugiperda (fall armyworm) / References: UniProt: Q53GT1
#3: Protein E3 ubiquitin-protein ligase RBX1, N-terminally processed / E3 ubiquitin-protein transferase RBX1 / N-terminally processed


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

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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: CUL3-RBX1-KLHL22 complex without CUL3 NA motif / Type: COMPLEX / Entity ID: all / Source: RECOMBINANT
Source (natural)Organism: Homo sapiens (human)
Source (recombinant)Organism: Spodoptera frugiperda (fall armyworm)
Buffer solutionpH: 7.5
Buffer component
IDConc.NameFormulaBuffer-ID
1150 mMsodium chlorideNaCl1
220 mMtris(hydroxymethyl)aminomethaneTris1
31 mM2-Amino-2-(hydroxymethyl)propane-1,3-diolTCEP1
SpecimenConc.: 2 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
Specimen supportGrid type: Quantifoil R1.2/1.3
VitrificationInstrument: FEI VITROBOT MARK IV / Cryogen name: ETHANE / Humidity: 100 % / Chamber temperature: 277 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: DIFFRACTION / Nominal defocus max: 2000 nm / Nominal defocus min: 1500 nm
Image recordingElectron dose: 50 e/Å2 / Detector mode: SUPER-RESOLUTION / Film or detector model: GATAN K2 SUMMIT (4k x 4k)

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Processing

EM software
IDNameVersionCategory
4cryoSPARC4.2CTF correction
10cryoSPARC4.2initial Euler assignment
11cryoSPARC4.2final Euler assignment
12cryoSPARC4.2classification
13cryoSPARC4.23D reconstruction
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
Particle selectionNum. of particles selected: 74279
3D reconstructionResolution: 4.2 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 74279 / Symmetry type: POINT

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