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- PDB-8khp: CULLIN3-KLHL22-RBX1 E3 ligase -

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Basic information

Entry
Database: PDB / ID: 8khp
TitleCULLIN3-KLHL22-RBX1 E3 ligase
Components
  • Cullin-3
  • E3 ubiquitin-protein ligase RBX1
  • Kelch-like protein 22
KeywordsSTRUCTURAL PROTEIN / E3 ligase
Function / homology
Function and homology information


liver morphogenesis / positive regulation of mitotic cell cycle phase transition / trophectodermal cellular morphogenesis / POZ domain binding / nuclear protein quality control by the ubiquitin-proteasome system / regulation protein catabolic process at postsynapse / polar microtubule / anaphase-promoting complex-dependent catabolic process / COPII vesicle coating / cullin-RING-type E3 NEDD8 transferase ...liver morphogenesis / positive regulation of mitotic cell cycle phase transition / trophectodermal cellular morphogenesis / POZ domain binding / nuclear protein quality control by the ubiquitin-proteasome system / regulation protein catabolic process at postsynapse / polar microtubule / anaphase-promoting complex-dependent catabolic process / COPII vesicle coating / cullin-RING-type E3 NEDD8 transferase / stem cell division / cellular response to chemical stress / NEDD8 transferase activity / cellular response to L-leucine / RHOBTB3 ATPase cycle / cullin-RING ubiquitin ligase complex / embryonic cleavage / cell projection organization / positive regulation of mitotic metaphase/anaphase transition / 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 / Notch binding / NEDD8 ligase activity / RHOBTB1 GTPase cycle / Cul5-RING ubiquitin ligase complex / negative regulation of response to oxidative stress / ubiquitin-ubiquitin ligase activity / fibroblast apoptotic process / Cul4A-RING E3 ubiquitin ligase complex / SCF ubiquitin ligase complex / negative regulation of Rho protein signal transduction / Cul2-RING ubiquitin ligase complex / negative regulation of type I interferon production / Cul4B-RING E3 ubiquitin ligase complex / ubiquitin ligase complex scaffold activity / mitotic metaphase chromosome alignment / SCF-dependent proteasomal ubiquitin-dependent protein catabolic process / Cul3-RING ubiquitin ligase complex / intercellular bridge / mitotic spindle assembly checkpoint signaling / stress fiber assembly / Prolactin receptor signaling / positive regulation of cytokinesis / protein monoubiquitination / mitotic sister chromatid segregation / cullin family protein binding / ubiquitin-like ligase-substrate adaptor activity / sperm flagellum / protein autoubiquitination / RHOBTB2 GTPase cycle / protein K48-linked ubiquitination / Nuclear events stimulated by ALK signaling in cancer / endoplasmic reticulum to Golgi vesicle-mediated transport / gastrulation / 14-3-3 protein binding / positive regulation of TORC1 signaling / T cell activation / Regulation of BACH1 activity / negative regulation of autophagy / intrinsic apoptotic signaling pathway / cyclin binding / post-translational protein modification / positive regulation of protein ubiquitination / integrin-mediated signaling pathway / Degradation of DVL / Recognition of DNA damage by PCNA-containing replication complex / Degradation of GLI1 by the proteasome / Negative regulation of NOTCH4 signaling / cellular response to amino acid stimulus / GSK3B and BTRC:CUL1-mediated-degradation of NFE2L2 / Vif-mediated degradation of APOBEC3G / Hedgehog 'on' state / DNA Damage Recognition in GG-NER / 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 / protein destabilization / 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 / mitotic spindle / Wnt signaling pathway / Regulation of expression of SLITs and ROBOs / Constitutive Signaling by NOTCH1 PEST Domain Mutants / Constitutive Signaling by NOTCH1 HD+PEST Domain Mutants / Formation of Incision Complex in GG-NER / spindle pole / Interleukin-1 signaling / Orc1 removal from chromatin / Dual incision in TC-NER / G1/S transition of mitotic cell cycle
Similarity search - Function
Kelch-like protein 22 / Kelch motif / Galactose oxidase, central domain / Zinc finger, RING-H2-type / RING-H2 zinc finger domain / BTB-kelch protein / BTB/Kelch-associated / BTB And C-terminal Kelch / Cullin protein neddylation domain / BTB And C-terminal Kelch ...Kelch-like protein 22 / Kelch motif / Galactose oxidase, central domain / Zinc finger, RING-H2-type / RING-H2 zinc finger domain / BTB-kelch protein / BTB/Kelch-associated / BTB And C-terminal Kelch / Cullin protein neddylation domain / BTB And C-terminal Kelch / Cullin, conserved site / Cullin family signature. / Cullin / Cullin repeat-like-containing domain superfamily / Cullin protein, neddylation domain / Cullin protein neddylation domain / Kelch / Kelch repeat type 1 / Kelch motif / Cullin / Cullin, N-terminal / Cullin homology domain / Cullin homology domain superfamily / Cullin family / 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: 3.67 Å
AuthorsSu, M.-Y. / Su, M.-Y.
Funding support China, 1items
OrganizationGrant numberCountry
Other government2022A1515010856 China
CitationJournal: Structure / Year: 2023
Title: Cryo-EM structure of the KLHL22 E3 ligase bound to an oligomeric metabolic enzyme.
Authors: Fei Teng / Yang Wang / Ming Liu / Shuyun Tian / Goran Stjepanovic / Ming-Yuan Su /
Abstract: CULLIN-RING ligases constitute the largest group of E3 ubiquitin ligases. While some CULLIN family members recruit adapters before engaging further with different substrate receptors, homo-dimeric ...CULLIN-RING ligases constitute the largest group of E3 ubiquitin ligases. While some CULLIN family members recruit adapters before engaging further with different substrate receptors, homo-dimeric BTB-Kelch family proteins combine adapter and substrate receptor into a single polypeptide for the CULLIN3 family. However, the entire structural assembly and molecular details have not been elucidated to date. Here, we present a cryo-EM structure of the CULLIN3 in complex with Kelch-like protein 22 (KLHL22) and a mitochondrial glutamate dehydrogenase complex I (GDH1) at 3.06 Å resolution. The structure adopts a W-shaped architecture formed by E3 ligase dimers. Three CULLIN3 dimers were found to be dynamically associated with a single GDH1 hexamer. CULLIN3 ligase mediated the polyubiquitination of GDH1 in vitro. Together, these results enabled the establishment of a structural model for understanding the complete assembly of BTB-Kelch proteins with CULLIN3 and how together they recognize oligomeric substrates and target them for ubiquitination.
History
DepositionAug 22, 2023Deposition site: PDBJ / Processing site: PDBC
Revision 1.0Dec 13, 2023Provider: repository / Type: Initial release

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

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Assembly

Deposited unit
A: Kelch-like protein 22
B: Kelch-like protein 22
C: Cullin-3
D: Cullin-3
E: E3 ubiquitin-protein ligase RBX1
F: E3 ubiquitin-protein ligase RBX1


Theoretical massNumber of molelcules
Total (without water)346,1966
Polymers346,1966
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 Kelch-like protein 22


Mass: 71744.594 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: KLHL22 / Production host: Homo sapiens (human) / References: UniProt: Q53GT1
#2: Protein Cullin-3 / CUL-3


Mass: 89063.328 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: CUL3, KIAA0617 / Production host: Homo sapiens (human) / References: UniProt: Q13618
#3: 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.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: RBX1, RNF75, ROC1 / Production host: Homo sapiens (human)
References: UniProt: P62877, RING-type E3 ubiquitin transferase, cullin-RING-type E3 NEDD8 transferase

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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: CULLIN3-KLHL22-RBX1 E3 ligase / Type: COMPLEX / Entity ID: all / Source: RECOMBINANT
Molecular weightExperimental value: NO
Source (natural)Organism: Homo sapiens (human)
Source (recombinant)Organism: Homo sapiens (human)
Buffer solutionpH: 7.4
SpecimenEmbedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
VitrificationCryogen name: ETHANE

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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: SPOT SCAN
Electron lensMode: BRIGHT FIELD / Nominal defocus max: 1900 nm / Nominal defocus min: 1100 nm
Image recordingElectron dose: 1.07 e/Å2 / Film or detector model: GATAN K3 (6k x 4k)

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Processing

CTF correctionType: NONE
3D reconstructionResolution: 3.67 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 181834 / Symmetry type: POINT
Refine LS restraints
Refine-IDTypeDev idealNumber
ELECTRON MICROSCOPYf_bond_d0.00217807
ELECTRON MICROSCOPYf_angle_d0.46524295
ELECTRON MICROSCOPYf_dihedral_angle_d3.0812836
ELECTRON MICROSCOPYf_chiral_restr0.042970
ELECTRON MICROSCOPYf_plane_restr0.0023282

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