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Open data
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Basic information
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| Title | Cryo-EM Structure of the KBTBD2-CRL3~N8(removed)-CSN complex | |||||||||
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Keywords | ligase / complex | |||||||||
| Function / homology | Function and homology informationpositive regulation of mitotic cell cycle phase transition / POZ domain binding / COP9 signalosome assembly / macrophage migration inhibitory factor binding / regulation of DNA damage response, signal transduction by p53 class mediator / regulation of IRE1-mediated unfolded protein response / exosomal secretion / GTPase inhibitor activity / negative regulation of Rho protein signal transduction / embryonic cleavage ...positive regulation of mitotic cell cycle phase transition / POZ domain binding / COP9 signalosome assembly / macrophage migration inhibitory factor binding / regulation of DNA damage response, signal transduction by p53 class mediator / regulation of IRE1-mediated unfolded protein response / exosomal secretion / GTPase inhibitor activity / negative regulation of Rho protein signal transduction / embryonic cleavage / deNEDDylase activity / polar microtubule / activation of NF-kappaB-inducing kinase activity / anaphase-promoting complex-dependent catabolic process / nuclear protein quality control by the ubiquitin-proteasome system / regulation protein catabolic process at postsynapse / COPII vesicle coat assembly / protein deneddylation / regulation of protein neddylation / eukaryotic translation initiation factor 3 complex / cell projection organization / RHOBTB3 ATPase cycle / negative regulation of beige fat cell differentiation / COP9 signalosome / cullin-RING-type E3 NEDD8 transferase / NEDD8 transferase activity / deubiquitinase activity / stem cell division / negative regulation of mitophagy / cullin-RING ubiquitin ligase complex / regulation of xenophagy / Loss of Function of FBXW7 in Cancer and NOTCH1 Signaling / positive regulation of mitotic metaphase/anaphase transition / cellular response to chemical stress / Cul7-RING ubiquitin ligase complex / regulation of cell cycle process / neural crest cell differentiation / RNA polymerase II transcription initiation surveillance / Notch binding / positive regulation of protein autoubiquitination / protein neddylation / stress fiber assembly / Hydrolases; Acting on peptide bonds (peptidases) / regulation of BMP signaling pathway / regulation of JNK cascade / NEDD8 ligase activity / regulation of mitophagy / RHOBTB1 GTPase cycle / negative regulation of response to oxidative stress / regulation of centrosome duplication / protein K27-linked ubiquitination / VCB complex / Cul5-RING ubiquitin ligase complex / metal-dependent deubiquitinase activity / 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 / intercellular bridge / regulation of mitotic cytokinesis / Cul3-RING ubiquitin ligase complex / regulation of DNA damage checkpoint / negative regulation of type I interferon production / positive regulation of cytokinesis / 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 / ubiquitin ligase complex scaffold activity / negative regulation of adipose tissue development / regulation of cellular response to stress / limb development / response to light stimulus / protein monoubiquitination / JNK cascade / cullin family protein binding / mitotic metaphase chromosome alignment / endoplasmic reticulum to Golgi vesicle-mediated transport / RHOBTB2 GTPase cycle / regulation of DNA-templated DNA replication initiation / centrosome duplication / sperm flagellum / protein autoubiquitination / cilium assembly / ubiquitin-like ligase-substrate adaptor activity / kidney development / 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 / regulation of cellular response to insulin stimulus Similarity search - Function | |||||||||
| Biological species | Homo sapiens (human) | |||||||||
| Method | single particle reconstruction / cryo EM / Resolution: 7.51 Å | |||||||||
Authors | Hu Y / Mao Q / Chen Z / Sun L | |||||||||
| Funding support | China, 1 items
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Citation | Journal: Nat Struct Mol Biol / Year: 2024Title: Dynamic molecular architecture and substrate recruitment of cullin3-RING E3 ligase CRL3. Authors: Yuxia Hu / Zhao Zhang / Qiyu Mao / Xiang Zhang / Aihua Hao / Yu Xun / Yeda Wang / Lin Han / Wuqiang Zhan / Qianying Liu / Yue Yin / Chao Peng / Eva Marie Y Moresco / Zhenguo Chen / Bruce Beutler / Lei Sun / ![]() Abstract: Phosphatidylinositol 3-kinase α, a heterodimer of catalytic p110α and one of five regulatory subunits, mediates insulin- and insulin like growth factor-signaling and, frequently, oncogenesis. ...Phosphatidylinositol 3-kinase α, a heterodimer of catalytic p110α and one of five regulatory subunits, mediates insulin- and insulin like growth factor-signaling and, frequently, oncogenesis. Cellular levels of the regulatory p85α subunit are tightly controlled by regulated proteasomal degradation. In adipose tissue and growth plates, failure of K48-linked p85α ubiquitination causes diabetes, lipodystrophy and dwarfism in mice, as in humans with SHORT syndrome. Here we elucidated the structures of the key ubiquitin ligase complexes regulating p85α availability. Specificity is provided by the substrate receptor KBTBD2, which recruits p85α to the cullin3-RING E3 ubiquitin ligase (CRL3). CRL3 forms multimers, which disassemble into dimers upon substrate binding (CRL3-p85α) and/or neddylation by the activator NEDD8 (CRL3~N8), leading to p85α ubiquitination and degradation. Deactivation involves dissociation of NEDD8 mediated by the COP9 signalosome and displacement of KBTBD2 by the inhibitor CAND1. The hereby identified structural basis of p85α regulation opens the way to better understanding disturbances of glucose regulation, growth and cancer. | |||||||||
| History |
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Structure visualization
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Downloads & links
-EMDB archive
| Map data | emd_34462.map.gz | 34.2 MB | EMDB map data format | |
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| Header (meta data) | emd-34462-v30.xml emd-34462.xml | 31.1 KB 31.1 KB | Display Display | EMDB header |
| Images | emd_34462.png | 99.3 KB | ||
| Filedesc metadata | emd-34462.cif.gz | 9.1 KB | ||
| Others | emd_34462_half_map_1.map.gz emd_34462_half_map_2.map.gz | 29.6 MB 29.6 MB | ||
| Archive directory | http://ftp.pdbj.org/pub/emdb/structures/EMD-34462 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-34462 | HTTPS FTP |
-Related structure data
| Related structure data | ![]() 8h3aMC ![]() 8gq6C ![]() 8h33C ![]() 8h34C ![]() 8h35C ![]() 8h36C ![]() 8h37C ![]() 8h38C ![]() 8h3fC ![]() 8h3qC ![]() 8h3rC M: atomic model generated by this map C: citing same article ( |
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| Similar structure data | Similarity search - Function & homology F&H Search |
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Links
| EMDB pages | EMDB (EBI/PDBe) / EMDataResource |
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| Related items in Molecule of the Month |
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Map
| File | Download / File: emd_34462.map.gz / Format: CCP4 / Size: 38.4 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||
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| Projections & slices | Image control
Images are generated by Spider. | ||||||||||||||||||||||||||||||||||||
| Voxel size | X=Y=Z: 2.088 Å | ||||||||||||||||||||||||||||||||||||
| Density |
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| Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||
| Details | EMDB XML:
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-Supplemental data
-Half map: #2
| File | emd_34462_half_map_1.map | ||||||||||||
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| Density Histograms |
-Half map: #1
| File | emd_34462_half_map_2.map | ||||||||||||
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| Density Histograms |
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Sample components
+Entire : Cryo-EM Structure of the KBTBD2-CRL3~N8-CSN complex
+Supramolecule #1: Cryo-EM Structure of the KBTBD2-CRL3~N8-CSN complex
+Supramolecule #2: CSN
+Supramolecule #3: KBTBD2, Cullin-3, Rbx1
+Macromolecule #1: COP9 signalosome complex subunit 5
+Macromolecule #2: COP9 signalosome complex subunit 1
+Macromolecule #3: COP9 signalosome complex subunit 2
+Macromolecule #4: COP9 signalosome complex subunit 3
+Macromolecule #5: COP9 signalosome complex subunit 4
+Macromolecule #6: COP9 signalosome complex subunit 6
+Macromolecule #7: COP9 signalosome complex subunit 7b
+Macromolecule #8: COP9 signalosome complex subunit 8
+Macromolecule #9: Kelch repeat and BTB domain-containing protein 2
+Macromolecule #10: Cullin-3
+Macromolecule #11: E3 ubiquitin-protein ligase RBX1
+Macromolecule #12: ZINC ION
-Experimental details
-Structure determination
| Method | cryo EM |
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Processing | single particle reconstruction |
| Aggregation state | particle |
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Sample preparation
| Buffer | pH: 7.8 |
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| Vitrification | Cryogen name: ETHANE |
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Electron microscopy
| Microscope | FEI TITAN KRIOS |
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| Image recording | Film or detector model: GATAN K2 SUMMIT (4k x 4k) / Detector mode: SUPER-RESOLUTION / Average electron dose: 53.0 e/Å2 |
| Electron beam | Acceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN |
| Electron optics | Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Nominal defocus max: 2.2 µm / Nominal defocus min: 1.2 µm |
| Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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Image processing
| Startup model | Type of model: PDB ENTRY PDB model - PDB ID: Details: 6r7f |
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| Final reconstruction | Applied symmetry - Point group: C1 (asymmetric) / Resolution.type: BY AUTHOR / Resolution: 7.51 Å / Resolution method: FSC 0.143 CUT-OFF / Software - Name: RELION (ver. 3.0) / Number images used: 55391 |
| Initial angle assignment | Type: PROJECTION MATCHING |
| Final angle assignment | Type: PROJECTION MATCHING |
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About Yorodumi




Keywords
Homo sapiens (human)
Authors
China, 1 items
Citation









































Z (Sec.)
Y (Row.)
X (Col.)




































Trichoplusia ni (cabbage looper)
FIELD EMISSION GUN

