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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 / trophectodermal cellular morphogenesis / liver morphogenesis / POZ domain binding / COP9 signalosome assembly / trophectodermal cell proliferation / macrophage migration inhibitory factor binding / regulation of IRE1-mediated unfolded protein response / exosomal secretion / GTPase inhibitor activity ...positive regulation of mitotic cell cycle phase transition / trophectodermal cellular morphogenesis / liver morphogenesis / POZ domain binding / COP9 signalosome assembly / trophectodermal cell proliferation / macrophage migration inhibitory factor binding / regulation of IRE1-mediated unfolded protein response / exosomal secretion / GTPase inhibitor activity / deNEDDylase activity / polar microtubule / regulation protein catabolic process at postsynapse / anaphase-promoting complex-dependent catabolic process / nuclear protein quality control by the ubiquitin-proteasome system / COPII vesicle coat assembly / protein deneddylation / regulation of protein neddylation / activation of NF-kappaB-inducing kinase activity / eukaryotic translation initiation factor 3 complex / negative regulation of beige fat cell differentiation / RHOBTB3 ATPase cycle / COP9 signalosome / cullin-RING-type E3 NEDD8 transferase / NEDD8 transferase activity / 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 / fibroblast apoptotic process / Notch binding / RNA polymerase II transcription initiation surveillance / protein neddylation / cell projection organization / Hydrolases; Acting on peptide bonds (peptidases) / negative regulation of Rho protein signal transduction / NEDD8 ligase activity / RHOBTB1 GTPase cycle / regulation of JNK cascade / protein K27-linked ubiquitination / regulation of DNA damage response, signal transduction by p53 class mediator / negative regulation of response to oxidative stress / inner cell mass cell proliferation / VCB complex / Cul5-RING ubiquitin ligase complex / stem cell division / metal-dependent deubiquitinase activity / ubiquitin-ubiquitin ligase activity / mitotic metaphase chromosome alignment / ubiquitin-dependent protein catabolic process via the C-end degron rule pathway / SCF ubiquitin ligase complex / Cul2-RING ubiquitin ligase complex / stress fiber assembly / Cul3-RING ubiquitin ligase complex / negative regulation of type I interferon production / positive regulation of cytokinesis / SCF-dependent proteasomal ubiquitin-dependent protein catabolic process / Prolactin receptor signaling / Cul4A-RING E3 ubiquitin ligase complex / negative regulation of mitophagy / Cul4-RING E3 ubiquitin ligase complex / Cul4B-RING E3 ubiquitin ligase complex / ubiquitin ligase complex scaffold activity / : / response to light stimulus / skeletal muscle cell differentiation / cullin family protein binding / endoplasmic reticulum to Golgi vesicle-mediated transport / protein monoubiquitination / RHOBTB2 GTPase cycle / sperm flagellum / protein autoubiquitination / ubiquitin-like ligase-substrate adaptor activity / site of DNA damage / JNK cascade / signal transduction in response to DNA damage / Nuclear events stimulated by ALK signaling in cancer / protein K48-linked ubiquitination / negative regulation of insulin receptor signaling pathway / regulation of cellular response to insulin stimulus / translation initiation factor activity / transcription-coupled nucleotide-excision repair / gastrulation / positive regulation of TORC1 signaling / post-translational protein modification / intrinsic apoptotic signaling pathway / cyclin binding / T cell activation / positive regulation of protein ubiquitination / Regulation of BACH1 activity / integrin-mediated signaling pathway / negative regulation of canonical NF-kappaB signal transduction / lipid metabolic process / kidney development / phosphatidylinositol 3-kinase/protein kinase B signal transduction / cellular response to amino acid stimulus / negative regulation of canonical Wnt signaling pathway 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

