[English] 日本語
Yorodumi- PDB-9egl: Cryo-EM structure of COP9 signalosome precatalytic state with ned... -
+
Open data
-
Basic information
| Entry | Database: PDB / ID: 9egl | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Title | Cryo-EM structure of COP9 signalosome precatalytic state with neddylated cullin-3 | |||||||||||||||
Components |
| |||||||||||||||
Keywords | SIGNALING PROTEIN / COP9 / COP9 signalosome / signalosome / NEDD8 / CSN5i-3 / deneddylation / CSN5 / metalloprotease | |||||||||||||||
| 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 / nuclear protein quality control by the ubiquitin-proteasome system / regulation protein catabolic process at postsynapse / COPII vesicle coating / anaphase-promoting complex-dependent catabolic process / 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 / positive regulation of mitotic metaphase/anaphase transition / RHOBTB3 ATPase cycle / cullin-RING-type E3 NEDD8 transferase / NEDD8 transferase activity / COP9 signalosome / embryonic cleavage / cullin-RING ubiquitin ligase complex / cell projection organization / Cul7-RING ubiquitin ligase complex / cellular response to chemical stress / Loss of Function of FBXW7 in Cancer and NOTCH1 Signaling / protein K27-linked ubiquitination / Notch binding / positive regulation of protein autoubiquitination / RNA polymerase II transcription initiation surveillance / protein neddylation / fibroblast apoptotic process / NEDD8 ligase activity / Hydrolases; Acting on peptide bonds (peptidases) / negative regulation of Rho protein signal transduction / RHOBTB1 GTPase cycle / metal-dependent deubiquitinase activity / VCB complex / negative regulation of response to oxidative stress / regulation of JNK cascade / regulation of DNA damage response, signal transduction by p53 class mediator / Cul5-RING ubiquitin ligase complex / inner cell mass cell proliferation / ubiquitin-ubiquitin ligase activity / ubiquitin-dependent protein catabolic process via the C-end degron rule pathway / SCF ubiquitin ligase complex / stem cell division / Cul2-RING ubiquitin ligase complex / negative regulation of type I interferon production / mitotic metaphase chromosome alignment / SCF-dependent proteasomal ubiquitin-dependent protein catabolic process / Cul3-RING ubiquitin ligase complex / stress fiber assembly / negative regulation of mitophagy / positive regulation of cytokinesis / Cul4A-RING E3 ubiquitin ligase complex / Cul4-RING E3 ubiquitin ligase complex / Prolactin receptor signaling / Cul4B-RING E3 ubiquitin ligase complex / ubiquitin ligase complex scaffold activity / TGF-beta receptor signaling activates SMADs / regulation of proteolysis / response to light stimulus / cullin family protein binding / skeletal muscle cell differentiation / regulation of postsynapse assembly / protein monoubiquitination / endoplasmic reticulum to Golgi vesicle-mediated transport / anatomical structure morphogenesis / RHOBTB2 GTPase cycle / sperm flagellum / site of DNA damage / : / protein autoubiquitination / protein K48-linked ubiquitination / signal transduction in response to DNA damage / Nuclear events stimulated by ALK signaling in cancer / JNK cascade / transcription-coupled nucleotide-excision repair / gastrulation / translation initiation factor activity / positive regulation of TORC1 signaling / regulation of cellular response to insulin stimulus / negative regulation of insulin receptor signaling pathway / intrinsic apoptotic signaling pathway / post-translational protein modification / cyclin binding / T cell activation / negative regulation of canonical NF-kappaB signal transduction / positive regulation of protein ubiquitination / Regulation of BACH1 activity / integrin-mediated signaling pathway / Degradation of CRY and PER proteins / cellular response to amino acid stimulus Similarity search - Function | |||||||||||||||
| Biological species | Homo sapiens (human) | |||||||||||||||
| Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.93 Å | |||||||||||||||
Authors | Shi, H. / Zheng, N. | |||||||||||||||
| Funding support | United States, 1items
| |||||||||||||||
Citation | Journal: Nature / Year: 2026Title: CSN5i-3 is an orthosteric molecular glue inhibitor of COP9 signalosome. Authors: Huigang Shi / Xiaorong Wang / Clinton Yu / Haibin Mao / Fenglong Jiao / Merav Braitbard / Ben Shor / Zhongsheng Zhang / Thomas R Hinds / Shiyun Cao / Erkang Fan / Dina Schneidman-Duhovny / ...Authors: Huigang Shi / Xiaorong Wang / Clinton Yu / Haibin Mao / Fenglong Jiao / Merav Braitbard / Ben Shor / Zhongsheng Zhang / Thomas R Hinds / Shiyun Cao / Erkang Fan / Dina Schneidman-Duhovny / Lan Huang / Ning Zheng / ![]() Abstract: Orthosteric inhibitors block enzyme active sites and prevent substrates from binding. Enhancing their specificity through substrate dependence seems inherently unlikely, as their mechanism hinges on ...Orthosteric inhibitors block enzyme active sites and prevent substrates from binding. Enhancing their specificity through substrate dependence seems inherently unlikely, as their mechanism hinges on direct competition rather than selective recognition. Here we show that a molecular glue mechanism unexpectedly imparts substrate-dependent potency to CSN5i-3, an orthosteric inhibitor of the COP9 signalosome (CSN). We first confirm that CSN5i-3 inhibits CSN, which catalyses NEDD8 (N8) deconjugation from the cullin-RING ubiquitin ligases, by occupying the active site of its catalytic subunit, CSN5, and directly competing with the iso-peptide bond substrate. Notably, the orthosteric inhibitor binds free CSN with only micromolar affinity, yet achieves nanomolar potency in blocking its deneddylase activity. Cryogenic electron microscopy structures of the enzyme-substrate-inhibitor complex reveal that active site-engaged CSN5i-3 occludes the substrate iso-peptide linkage while simultaneously extending an N8-binding exosite of CSN5, acting as a molecular glue to cement the N8-CSN5 interaction. The cooperativity of this trimolecular CSN5i-3-N8-CSN5 assembly, in turn, sequesters CSN5i-3 at its binding site, conferring high potency to the orthosteric inhibitor despite its low affinity for the free enzyme. Together, our findings highlight the modest affinity requirements of molecule glues for individual target proteins and establish orthosteric molecular glue inhibitors as a new class of substrate-dependent enzyme antagonists. | |||||||||||||||
| History |
|
-
Structure visualization
| Structure viewer | Molecule: Molmil Jmol/JSmol |
|---|
-
Downloads & links
-
Download
| PDBx/mmCIF format | 9egl.cif.gz | 579.1 KB | Display | PDBx/mmCIF format |
|---|---|---|---|---|
| PDB format | pdb9egl.ent.gz | 462.5 KB | Display | PDB format |
| PDBx/mmJSON format | 9egl.json.gz | Tree view | PDBx/mmJSON format | |
| Others | Other downloads |
-Validation report
| Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/eg/9egl ftp://data.pdbj.org/pub/pdb/validation_reports/eg/9egl | HTTPS FTP |
|---|
-Related structure data
| Related structure data | ![]() 47990MC ![]() 9e5zC ![]() 9e77C ![]() 9e81C ![]() 9efmC ![]() 9efqC ![]() 9efvC ![]() 9eg1C ![]() 9eg8C ![]() 9ph4C C: citing same article ( M: map data used to model this data |
|---|---|
| Similar structure data | Similarity search - Function & homology F&H Search |
-
Links
-
Assembly
| Deposited unit | ![]()
|
|---|---|
| 1 |
|
-
Components
-COP9 signalosome complex subunit ... , 8 types, 8 molecules ABCDEFGH
| #1: Protein | Mass: 55606.496 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Homo sapiens (human) / Gene: GPS1, COPS1, CSN1 / Production host: ![]() |
|---|---|
| #2: Protein | Mass: 51664.570 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Homo sapiens (human) / Gene: COPS2, CSN2, TRIP15 / Production host: ![]() |
| #3: Protein | Mass: 47924.008 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Homo sapiens (human) / Gene: COPS3, CSN3 / Production host: ![]() |
| #4: Protein | Mass: 46322.688 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Homo sapiens (human) / Gene: COPS4, CSN4 / Production host: ![]() |
| #5: Protein | Mass: 37562.719 Da / Num. of mol.: 1 / Mutation: E76A, D151N Source method: isolated from a genetically manipulated source Source: (gene. exp.) Homo sapiens (human) / Gene: COPS5, CSN5, JAB1 / Production host: ![]() References: UniProt: Q92905, Hydrolases; Acting on peptide bonds (peptidases) |
| #6: Protein | Mass: 36203.398 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Homo sapiens (human) / Gene: COPS6, CSN6, HVIP / Production host: ![]() |
| #7: Protein | Mass: 29656.928 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Homo sapiens (human) / Gene: COPS7B, CSN7B / Production host: ![]() |
| #8: Protein | Mass: 23245.543 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Homo sapiens (human) / Gene: COPS8, CSN8 / Production host: ![]() |
-Protein , 3 types, 3 molecules IJK
| #9: Protein | Mass: 9086.562 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Homo sapiens (human) / Gene: NEDD8 / Production host: ![]() |
|---|---|
| #10: Protein | Mass: 89063.328 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Homo sapiens (human) / Gene: CUL3, KIAA0617 / Production host: ![]() |
| #11: Protein | 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: ![]() References: UniProt: P62877, RING-type E3 ubiquitin transferase, cullin-RING-type E3 NEDD8 transferase |
-Non-polymers , 1 types, 3 molecules 
| #12: Chemical |
|---|
-Details
| Has ligand of interest | Y |
|---|---|
| Has protein modification | N |
-Experimental details
-Experiment
| Experiment | Method: ELECTRON MICROSCOPY |
|---|---|
| EM experiment | Aggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction |
-
Sample preparation
| Component | Name: The complex of human COP9 signalosome with NEDD8 and CSN5i-3 Type: COMPLEX / Entity ID: #1-#11 / Source: RECOMBINANT |
|---|---|
| Source (natural) | Organism: Homo sapiens (human) |
| Source (recombinant) | Organism: ![]() |
| Buffer solution | pH: 7.5 |
| Specimen | Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES |
| Vitrification | Instrument: FEI VITROBOT MARK IV / Cryogen name: ETHANE / Humidity: 100 % |
-
Electron microscopy imaging
| Microscopy | Model: TFS GLACIOS |
|---|---|
| Electron gun | Electron source: FIELD EMISSION GUN / Accelerating voltage: 200 kV / Illumination mode: FLOOD BEAM |
| Electron lens | Mode: BRIGHT FIELD / Nominal defocus max: 2500 nm / Nominal defocus min: 800 nm / Alignment procedure: COMA FREE |
| Specimen holder | Cryogen: NITROGEN / Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER |
| Image recording | Electron dose: 50 e/Å2 / Film or detector model: GATAN K3 BIOQUANTUM (6k x 4k) |
-
Processing
| EM software |
| ||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||
| Symmetry | Point symmetry: C1 (asymmetric) | ||||||||||||||||||||||||
| 3D reconstruction | Resolution: 3.93 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 308367 / Algorithm: FOURIER SPACE / Symmetry type: POINT | ||||||||||||||||||||||||
| Refinement | Highest resolution: 3.93 Å Stereochemistry target values: REAL-SPACE (WEIGHTED MAP SUM AT ATOM CENTERS) | ||||||||||||||||||||||||
| Refine LS restraints |
|
Movie
Controller
About Yorodumi



Homo sapiens (human)
United States, 1items
Citation




























PDBj











FIELD EMISSION GUN