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Yorodumi- PDB-8ajm: Structure of human DDB1-DCAF12 in complex with the C-terminus of CCT5 -
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Open data
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Basic information
| Entry | Database: PDB / ID: 8ajm | ||||||
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| Title | Structure of human DDB1-DCAF12 in complex with the C-terminus of CCT5 | ||||||
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Keywords | LIGASE / ubiquitin / E3 / TRiC / chaperonin | ||||||
| Function / homology | Function and homology informationpositive regulation of protein localization to Cajal body / positive regulation of telomerase RNA localization to Cajal body / chaperonin-containing T-complex / BBSome-mediated cargo-targeting to cilium / Formation of tubulin folding intermediates by CCT/TriC / binding of sperm to zona pellucida / Folding of actin by CCT/TriC / Prefoldin mediated transfer of substrate to CCT/TriC / positive regulation by virus of viral protein levels in host cell / spindle assembly involved in female meiosis ...positive regulation of protein localization to Cajal body / positive regulation of telomerase RNA localization to Cajal body / chaperonin-containing T-complex / BBSome-mediated cargo-targeting to cilium / Formation of tubulin folding intermediates by CCT/TriC / binding of sperm to zona pellucida / Folding of actin by CCT/TriC / Prefoldin mediated transfer of substrate to CCT/TriC / positive regulation by virus of viral protein levels in host cell / spindle assembly involved in female meiosis / epigenetic programming in the zygotic pronuclei / UV-damage excision repair / ubiquitin-dependent protein catabolic process via the C-end degron rule pathway / biological process involved in interaction with symbiont / WD40-repeat domain binding / regulation of mitotic cell cycle phase transition / Cul4A-RING E3 ubiquitin ligase complex / Cul4-RING E3 ubiquitin ligase complex / Cul4B-RING E3 ubiquitin ligase complex / Association of TriC/CCT with target proteins during biosynthesis / ubiquitin ligase complex scaffold activity / negative regulation of reproductive process / negative regulation of developmental process / viral release from host cell / cullin family protein binding / Hydrolases; Acting on acid anhydrides; In phosphorus-containing anhydrides / ectopic germ cell programmed cell death / beta-tubulin binding / positive regulation of viral genome replication / ubiquitin-like ligase-substrate adaptor activity / proteasomal protein catabolic process / sperm end piece / positive regulation of telomere maintenance via telomerase / protein folding chaperone / positive regulation of gluconeogenesis / sperm principal piece / T cell activation / mRNA 3'-UTR binding / nucleotide-excision repair / ATP-dependent protein folding chaperone / Recognition of DNA damage by PCNA-containing replication complex / regulation of circadian rhythm / regulation of autophagy / mRNA 5'-UTR binding / DNA Damage Recognition in GG-NER / response to virus / Dual Incision in GG-NER / Transcription-Coupled Nucleotide Excision Repair (TC-NER) / Formation of TC-NER Pre-Incision Complex / Wnt signaling pathway / Formation of Incision Complex in GG-NER / Dual incision in TC-NER / Gap-filling DNA repair synthesis and ligation in TC-NER / positive regulation of protein catabolic process / cellular response to UV / unfolded protein binding / sperm midpiece / rhythmic process / Cooperation of PDCL (PhLP1) and TRiC/CCT in G-protein beta folding / G-protein beta-subunit binding / protein folding / site of double-strand break / Neddylation / cell body / protein-macromolecule adaptor activity / ubiquitin-dependent protein catabolic process / microtubule / proteasome-mediated ubiquitin-dependent protein catabolic process / damaged DNA binding / chromosome, telomeric region / protein stabilization / protein ubiquitination / DNA repair / apoptotic process / DNA damage response / centrosome / negative regulation of apoptotic process / protein-containing complex binding / nucleolus / ATP hydrolysis activity / protein-containing complex / extracellular space / DNA binding / extracellular exosome / nucleoplasm / ATP binding / nucleus / cytoplasm / cytosol Similarity search - Function | ||||||
| Biological species | Homo sapiens (human) | ||||||
| Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 2.83 Å | ||||||
Authors | Pla-Prats, C. / Cavadini, S. / Kempf, G. / Thoma, N.H. | ||||||
| Funding support | European Union, 1items
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Citation | Journal: EMBO J / Year: 2023Title: Recognition of the CCT5 di-Glu degron by CRL4 is dependent on TRiC assembly. Authors: Carlos Pla-Prats / Simone Cavadini / Georg Kempf / Nicolas H Thomä / ![]() Abstract: Assembly Quality Control (AQC) E3 ubiquitin ligases target incomplete or incorrectly assembled protein complexes for degradation. The CUL4-RBX1-DDB1-DCAF12 (CRL4 ) E3 ligase preferentially ...Assembly Quality Control (AQC) E3 ubiquitin ligases target incomplete or incorrectly assembled protein complexes for degradation. The CUL4-RBX1-DDB1-DCAF12 (CRL4 ) E3 ligase preferentially ubiquitinates proteins that carry a C-terminal double glutamate (di-Glu) motif. Reported CRL4 di-Glu-containing substrates include CCT5, a subunit of the TRiC chaperonin. How DCAF12 engages its substrates and the functional relationship between CRL4 and CCT5/TRiC is currently unknown. Here, we present the cryo-EM structure of the DDB1-DCAF12-CCT5 complex at 2.8 Å resolution. DCAF12 serves as a canonical WD40 DCAF substrate receptor and uses a positively charged pocket at the center of the β-propeller to bind the C-terminus of CCT5. DCAF12 specifically reads out the CCT5 di-Glu side chains, and contacts other visible degron amino acids through Van der Waals interactions. The CCT5 C-terminus is inaccessible in an assembled TRiC complex, and functional assays demonstrate that DCAF12 binds and ubiquitinates monomeric CCT5, but not CCT5 assembled into TRiC. Our biochemical and structural results suggest a previously unknown role for the CRL4 E3 ligase in overseeing the assembly of a key cellular complex. | ||||||
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Structure visualization
| Structure viewer | Molecule: Molmil Jmol/JSmol |
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Downloads & links
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Download
| PDBx/mmCIF format | 8ajm.cif.gz | 327.9 KB | Display | PDBx/mmCIF format |
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| PDB format | pdb8ajm.ent.gz | 244.8 KB | Display | PDB format |
| PDBx/mmJSON format | 8ajm.json.gz | Tree view | PDBx/mmJSON format | |
| Others | Other downloads |
-Validation report
| Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/aj/8ajm ftp://data.pdbj.org/pub/pdb/validation_reports/aj/8ajm | HTTPS FTP |
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-Related structure data
| Related structure data | ![]() 15484MC ![]() 8ajnC ![]() 8ajoC M: map data used to model this data C: citing same article ( |
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| Similar structure data | Similarity search - Function & homology F&H Search |
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Links
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Assembly
| Deposited unit | ![]()
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Components
| #1: Protein | Mass: 129784.258 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Homo sapiens (human) / Gene: DDB1, XAP1 / Production host: Trichoplusia ni (cabbage looper) / References: UniProt: Q16531 |
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| #2: Protein | Mass: 53373.191 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Homo sapiens (human) / Gene: DCAF12, KIAA1892, TCC52, WDR40A / Production host: Trichoplusia ni (cabbage looper) / References: UniProt: Q5T6F0 |
| #3: Protein | Mass: 62436.809 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Homo sapiens (human) / Gene: CCT5, CCTE, KIAA0098 / Production host: Trichoplusia ni (cabbage looper) / References: UniProt: P48643 |
| Has protein modification | Y |
-Experimental details
-Experiment
| Experiment | Method: ELECTRON MICROSCOPY |
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| EM experiment | Aggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction |
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Sample preparation
| Component | Name: Complex of DDB1-DCAF12-CCT5 / Type: COMPLEX / Entity ID: all / Source: RECOMBINANT |
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| Source (natural) | Organism: Homo sapiens (human) |
| Source (recombinant) | Organism: Trichoplusia ni (cabbage looper) |
| Buffer solution | pH: 7.4 |
| Specimen | Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES |
| Vitrification | Cryogen name: ETHANE |
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Electron microscopy imaging
| Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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| Microscopy | Model: FEI TITAN KRIOS |
| Electron gun | Electron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM |
| Electron lens | Mode: BRIGHT FIELD / Nominal defocus max: 2500 nm / Nominal defocus min: 500 nm |
| Image recording | Electron dose: 51.8 e/Å2 / Film or detector model: GATAN K2 SUMMIT (4k x 4k) |
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Processing
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| CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||||||||
| Symmetry | Point symmetry: C1 (asymmetric) | ||||||||||||||||||||||||||||||
| 3D reconstruction | Resolution: 2.83 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 451315 / Symmetry type: POINT | ||||||||||||||||||||||||||||||
| Refinement | Cross valid method: NONE Stereochemistry target values: GeoStd + Monomer Library + CDL v1.2 | ||||||||||||||||||||||||||||||
| Displacement parameters | Biso mean: 169.1 Å2 | ||||||||||||||||||||||||||||||
| Refine LS restraints |
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Homo sapiens (human)
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Trichoplusia ni (cabbage looper)
FIELD EMISSION GUN