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- PDB-8qu8: PROTAC-mediated complex of KRAS with VHL/Elongin-B/Elongin-C/Cull... -
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Open data
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Basic information
Entry | Database: PDB / ID: 8qu8 | ||||||
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Title | PROTAC-mediated complex of KRAS with VHL/Elongin-B/Elongin-C/Cullin-2/Rbx1 | ||||||
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![]() | TRANSFERASE / TARGETED PROTEIN DEGRADATION / PROTAC / GTPASE | ||||||
Function / homology | ![]() regulation of cellular response to hypoxia / cullin-RING-type E3 NEDD8 transferase / NEDD8 transferase activity / RHOBTB3 ATPase cycle / negative regulation of receptor signaling pathway via JAK-STAT / cullin-RING ubiquitin ligase complex / cellular response to chemical stress / Cul7-RING ubiquitin ligase complex / ubiquitin-dependent protein catabolic process via the C-end degron rule pathway / transcription elongation factor activity ...regulation of cellular response to hypoxia / cullin-RING-type E3 NEDD8 transferase / NEDD8 transferase activity / RHOBTB3 ATPase cycle / negative regulation of receptor signaling pathway via JAK-STAT / cullin-RING ubiquitin ligase complex / cellular response to chemical stress / Cul7-RING ubiquitin ligase complex / ubiquitin-dependent protein catabolic process via the C-end degron rule pathway / transcription elongation factor activity / Loss of Function of FBXW7 in Cancer and NOTCH1 Signaling / target-directed miRNA degradation / elongin complex / positive regulation of protein autoubiquitination / RNA polymerase II transcription initiation surveillance / protein neddylation / Replication of the SARS-CoV-1 genome / NEDD8 ligase activity / VCB complex / negative regulation of response to oxidative stress / Cul5-RING ubiquitin ligase complex / response to mineralocorticoid / GMP binding / forebrain astrocyte development / SCF ubiquitin ligase complex / Cul2-RING ubiquitin ligase complex / intracellular membraneless organelle / negative regulation of type I interferon production / LRR domain binding / ubiquitin-ubiquitin ligase activity / Cul4A-RING E3 ubiquitin ligase complex / Cul4-RING E3 ubiquitin ligase complex / SCF-dependent proteasomal ubiquitin-dependent protein catabolic process / Cul3-RING ubiquitin ligase complex / regulation of synaptic transmission, GABAergic / negative regulation of epithelial cell differentiation / response to isolation stress / Cul4B-RING E3 ubiquitin ligase complex / ubiquitin ligase complex scaffold activity / SUMOylation of ubiquitinylation proteins / negative regulation of mitophagy / response to gravity / epithelial tube branching involved in lung morphogenesis / Prolactin receptor signaling / type I pneumocyte differentiation / Rac protein signal transduction / positive regulation of Rac protein signal transduction / Signaling by RAS GAP mutants / Signaling by RAS GTPase mutants / Activation of RAS in B cells / cullin family protein binding / myoblast proliferation / skeletal muscle cell differentiation / RAS signaling downstream of NF1 loss-of-function variants / Pausing and recovery of Tat-mediated HIV elongation / Tat-mediated HIV elongation arrest and recovery / negative regulation of transcription elongation by RNA polymerase II / RUNX3 regulates p14-ARF / positive regulation of glial cell proliferation / HIV elongation arrest and recovery / Pausing and recovery of HIV elongation / SOS-mediated signalling / Activated NTRK3 signals through RAS / Activated NTRK2 signals through RAS / SHC1 events in ERBB4 signaling / protein monoubiquitination / cardiac muscle cell proliferation / Signalling to RAS / Activated NTRK2 signals through FRS2 and FRS3 / Tat-mediated elongation of the HIV-1 transcript / negative regulation of signal transduction / SHC-related events triggered by IGF1R / Formation of HIV-1 elongation complex containing HIV-1 Tat / Estrogen-stimulated signaling through PRKCZ / glial cell proliferation / SHC-mediated cascade:FGFR3 / MET activates RAS signaling / ubiquitin-like ligase-substrate adaptor activity / Formation of HIV elongation complex in the absence of HIV Tat / protein K48-linked ubiquitination / SHC-mediated cascade:FGFR2 / Signaling by PDGFRA transmembrane, juxtamembrane and kinase domain mutants / Signaling by PDGFRA extracellular domain mutants / PTK6 Regulates RHO GTPases, RAS GTPase and MAP kinases / SHC-mediated cascade:FGFR4 / Erythropoietin activates RAS / Signaling by FGFR4 in disease / SHC-mediated cascade:FGFR1 / Nuclear events stimulated by ALK signaling in cancer / RNA Polymerase II Transcription Elongation / Signaling by CSF3 (G-CSF) / FRS-mediated FGFR3 signaling / Formation of RNA Pol II elongation complex / Signaling by FLT3 ITD and TKD mutants / Regulation of BACH1 activity / FRS-mediated FGFR2 signaling / FRS-mediated FGFR4 signaling / Signaling by FGFR3 in disease / protein-membrane adaptor activity / p38MAPK events Similarity search - Function | ||||||
Biological species | ![]() | ||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.5 Å | ||||||
![]() | Fischer, G. / Peter, D. / Arce-Solano, S. | ||||||
Funding support | ![]()
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![]() | ![]() Title: Targeting cancer with small-molecule pan-KRAS degraders. Authors: Johannes Popow / William Farnaby / Andreas Gollner / Christiane Kofink / Gerhard Fischer / Melanie Wurm / David Zollman / Andre Wijaya / Nikolai Mischerikow / Carina Hasenoehrl / Polina ...Authors: Johannes Popow / William Farnaby / Andreas Gollner / Christiane Kofink / Gerhard Fischer / Melanie Wurm / David Zollman / Andre Wijaya / Nikolai Mischerikow / Carina Hasenoehrl / Polina Prokofeva / Heribert Arnhof / Silvia Arce-Solano / Sammy Bell / Georg Boeck / Emelyne Diers / Aileen B Frost / Jake Goodwin-Tindall / Jale Karolyi-Oezguer / Shakil Khan / Theresa Klawatsch / Manfred Koegl / Roland Kousek / Barbara Kratochvil / Katrin Kropatsch / Arnel A Lauber / Ross McLennan / Sabine Olt / Daniel Peter / Oliver Petermann / Vanessa Roessler / Peggy Stolt-Bergner / Patrick Strack / Eva Strauss / Nicole Trainor / Vesna Vetma / Claire Whitworth / Siying Zhong / Jens Quant / Harald Weinstabl / Bernhard Kuster / Peter Ettmayer / Alessio Ciulli / ![]() ![]() ![]() ![]() Abstract: Mutations in the Kirsten rat sarcoma viral oncogene homolog (KRAS) protein are highly prevalent in cancer. However, small-molecule concepts that address oncogenic KRAS alleles remain elusive beyond ...Mutations in the Kirsten rat sarcoma viral oncogene homolog (KRAS) protein are highly prevalent in cancer. However, small-molecule concepts that address oncogenic KRAS alleles remain elusive beyond replacing glycine at position 12 with cysteine (G12C), which is clinically drugged through covalent inhibitors. Guided by biophysical and structural studies of ternary complexes, we designed a heterobifunctional small molecule that potently degrades 13 out of 17 of the most prevalent oncogenic KRAS alleles. Compared with inhibition, KRAS degradation results in more profound and sustained pathway modulation across a broad range of KRAS mutant cell lines, killing cancer cells while sparing models without genetic KRAS aberrations. Pharmacological degradation of oncogenic KRAS was tolerated and led to tumor regression in vivo. Together, these findings unveil a new path toward addressing KRAS-driven cancers with small-molecule degraders. #1: ![]() Title: Targeting cancer with small molecule pan-KRAS degraders Authors: Popow, J. / Farnaby, W. / Gollner, A. / Kofink, C. / Fischer, G. / Wurm, M. / Zollman, D. / Wijaya, A. / Mischerikow, N. / Hasenoehrl, C. / Prokofeva, P. / Arnhof, H. / Arce-Solano, S. / ...Authors: Popow, J. / Farnaby, W. / Gollner, A. / Kofink, C. / Fischer, G. / Wurm, M. / Zollman, D. / Wijaya, A. / Mischerikow, N. / Hasenoehrl, C. / Prokofeva, P. / Arnhof, H. / Arce-Solano, S. / Bell, S. / Boeck, G. / Diers, E. / Frost, A. / Goodwin-Tindall, J. / Karolyi-Oezguer, J. / Khan, S. / Klawatsch, T. / Koegl, M. / Kousek, R. / Kratochvil, B. / Kropatsch, K. / Lauber, A. / McLennan, R. / Olt, S. / Peter, D. / Petermann, O. / Roessler, V. / Stolt-Bergner, P. / Strack, P. / Strauss, E. / Trainor, N. / Vetma, V. / Whitworth, C. / Zhong, S. / Quant, J. / Weinstabl, H. / Kuster, B. / Ettmayer, P. / Ciulli, A. | ||||||
History |
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Structure visualization
Structure viewer | Molecule: ![]() ![]() |
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Downloads & links
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Download
PDBx/mmCIF format | ![]() | 258.5 KB | Display | ![]() |
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PDB format | ![]() | 201.3 KB | Display | ![]() |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
Others | ![]() |
-Validation report
Summary document | ![]() | 785.9 KB | Display | ![]() |
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Full document | ![]() | 787.7 KB | Display | |
Data in XML | ![]() | 40 KB | Display | |
Data in CIF | ![]() | 56 KB | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 18657MC M: map data used to model this data C: citing same article ( |
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Similar structure data | Similarity search - Function & homology ![]() |
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Links
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Assembly
Deposited unit | ![]()
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Components
-Protein , 6 types, 6 molecules ABCDEF
#1: Protein | Mass: 24049.545 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() |
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#2: Protein | Mass: 13016.586 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() |
#3: Protein | Mass: 12353.939 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() |
#4: Protein | Mass: 86967.734 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() |
#5: Protein | Mass: 12158.780 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() |
#6: Protein | Mass: 19354.824 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() |
-Non-polymers , 3 types, 4 molecules 




#7: Chemical | #8: Chemical | ChemComp-GDP / | #9: Chemical | ChemComp-WYL / ( | |
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-Details
Has ligand of interest | Y |
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-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: KRAS/ACBI3/VHL/EloB/EloC/Cul2/Rbx1 / Type: COMPLEX Details: PROTAC-mediated complex of KRAS with VHL/Elongin-B/Elongin-C/Cullin-2/Rbx1 Entity ID: #1-#6 / Source: RECOMBINANT | ||||||||||||||||||||
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Molecular weight | Value: 0.168 MDa / Experimental value: NO | ||||||||||||||||||||
Source (natural) | Organism: ![]() | ||||||||||||||||||||
Source (recombinant) | Organism: ![]() ![]() | ||||||||||||||||||||
Buffer solution | pH: 7.5 | ||||||||||||||||||||
Buffer component |
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Specimen | Conc.: 0.916 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES | ||||||||||||||||||||
Specimen support | Grid material: COPPER / Grid mesh size: 200 divisions/in. / Grid type: Quantifoil R1.2/1.3 | ||||||||||||||||||||
Vitrification | Instrument: FEI VITROBOT MARK IV / Cryogen name: ETHANE / Humidity: 95 % / Chamber temperature: 4 K |
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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: ![]() |
Electron lens | Mode: BRIGHT FIELD / Nominal magnification: 165000 X / Nominal defocus max: 2000 nm / Nominal defocus min: 800 nm / Cs: 2.7 mm |
Specimen holder | Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER |
Image recording | Electron dose: 40 e/Å2 / Film or detector model: FEI FALCON IV (4k x 4k) / Num. of grids imaged: 1 / Num. of real images: 7634 |
EM imaging optics | Energyfilter name: TFS Selectris / Energyfilter slit width: 10 eV |
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Processing
EM software |
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CTF correction | Type: NONE | ||||||||||||||||||||||||||||||||||||||||||||||||||
Particle selection | Num. of particles selected: 2414442 / Details: before 2D classification | ||||||||||||||||||||||||||||||||||||||||||||||||||
3D reconstruction | Resolution: 3.5 Å / Resolution method: OTHER / Num. of particles: 217000 / Details: cryoSPARC 3Dflex reconstruction / Symmetry type: POINT | ||||||||||||||||||||||||||||||||||||||||||||||||||
Atomic model building | PDB-ID: 5n4w Accession code: 5n4w / Details: KRAS-structure / Source name: PDB / Type: experimental model | ||||||||||||||||||||||||||||||||||||||||||||||||||
Refinement | Highest resolution: 3.5 Å |