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- PDB-9ogf: Cryo-EM structure of human exportin-1 conjugated with KPT-UTSW1 a... -

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Basic information

Entry
Database: PDB / ID: 9ogf
TitleCryo-EM structure of human exportin-1 conjugated with KPT-UTSW1 and bound to human ASB8-ELOB/C
Components
  • Ankyrin repeat and SOCS box protein 8
  • Elongin-B
  • Elongin-C
  • Exportin-1
KeywordsPROTEIN TRANSPORT / nuclear export / inhibitor / protein degradation
Function / homology
Function and homology information


cellular response to triglyceride / cellular response to salt / HuR (ELAVL1) binds and stabilizes mRNA / annulate lamellae / regulation of proteasomal ubiquitin-dependent protein catabolic process / nuclear export signal receptor activity / regulation of centrosome duplication / regulation of protein export from nucleus / target-directed miRNA degradation / elongin complex ...cellular response to triglyceride / cellular response to salt / HuR (ELAVL1) binds and stabilizes mRNA / annulate lamellae / regulation of proteasomal ubiquitin-dependent protein catabolic process / nuclear export signal receptor activity / regulation of centrosome duplication / regulation of protein export from nucleus / target-directed miRNA degradation / elongin complex / Rev-mediated nuclear export of HIV RNA / NEP/NS2 Interacts with the Cellular Export Machinery / VCB complex / Cul5-RING ubiquitin ligase complex / nucleocytoplasmic transport / Cul2-RING ubiquitin ligase complex / Maturation of hRSV A proteins / Pausing and recovery of Tat-mediated HIV elongation / Tat-mediated HIV elongation arrest and recovery / HIV elongation arrest and recovery / Pausing and recovery of HIV elongation / ribosomal large subunit export from nucleus / Estrogen-dependent nuclear events downstream of ESR-membrane signaling / protein localization to nucleus / Tat-mediated elongation of the HIV-1 transcript / mRNA export from nucleus / Formation of HIV-1 elongation complex containing HIV-1 Tat / Cajal body / Formation of HIV elongation complex in the absence of HIV Tat / ribosomal subunit export from nucleus / Cyclin A/B1/B2 associated events during G2/M transition / RNA Polymerase II Transcription Elongation / Formation of RNA Pol II elongation complex / ribosomal small subunit export from nucleus / Amplification of signal from unattached kinetochores via a MAD2 inhibitory signal / NPAS4 regulates expression of target genes / RNA Polymerase II Pre-transcription Events / Mitotic Prometaphase / Transcriptional and post-translational regulation of MITF-M expression and activity / EML4 and NUDC in mitotic spindle formation / protein export from nucleus / Resolution of Sister Chromatid Cohesion / Downregulation of TGF-beta receptor signaling / transcription corepressor binding / TP53 Regulates Transcription of DNA Repair Genes / Deactivation of the beta-catenin transactivating complex / transcription initiation at RNA polymerase II promoter / transcription elongation by RNA polymerase II / Heme signaling / RHO GTPases Activate Formins / Vif-mediated degradation of APOBEC3G / MAPK6/MAPK4 signaling / Inactivation of CSF3 (G-CSF) signaling / Oxygen-dependent proline hydroxylation of Hypoxia-inducible Factor Alpha / Evasion by RSV of host interferon responses / kinetochore / small GTPase binding / Regulation of expression of SLITs and ROBOs / Separation of Sister Chromatids / nuclear envelope / Antigen processing: Ubiquitination & Proteasome degradation / positive regulation of proteasomal ubiquitin-dependent protein catabolic process / ribosome biogenesis / Neddylation / protein-containing complex assembly / ubiquitin-dependent protein catabolic process / nuclear membrane / protein-macromolecule adaptor activity / DNA-binding transcription factor binding / intracellular signal transduction / protein ubiquitination / response to xenobiotic stimulus / ribonucleoprotein complex / protein domain specific binding / intracellular membrane-bounded organelle / ubiquitin protein ligase binding / regulation of transcription by RNA polymerase II / nucleolus / negative regulation of transcription by RNA polymerase II / protein-containing complex / RNA binding / nucleoplasm / nucleus / membrane / cytosol / cytoplasm
Similarity search - Function
Ankyrin repeat and SOCS box protein 8, SOCS box domain / SOCS box / SOCS box-like domain superfamily / SOCS box domain / SOCS box domain profile. / SOCS_box / Exportin-1, repeat 3 / Chromosome region maintenance repeat / Exportin-1, repeat 2 / Chromosome region maintenance or exportin repeat ...Ankyrin repeat and SOCS box protein 8, SOCS box domain / SOCS box / SOCS box-like domain superfamily / SOCS box domain / SOCS box domain profile. / SOCS_box / Exportin-1, repeat 3 / Chromosome region maintenance repeat / Exportin-1, repeat 2 / Chromosome region maintenance or exportin repeat / CRM1 / Exportin repeat 2 / CRM1 / Exportin repeat 3 / CRM1 C terminal / Exportin-1, C-terminal / CRM1 C terminal / Exportin-1/5 / Exportin-1/Importin-beta-like / Exportin 1-like protein / Importin-beta N-terminal domain / Importin-beta N-terminal domain / Importin-beta N-terminal domain profile. / Importin-beta, N-terminal domain / Ankyrin repeats (many copies) / Elongin-C / Elongin B / S-phase kinase-associated protein 1-like / SKP1 component, POZ domain / Skp1 family, tetramerisation domain / Found in Skp1 protein family / SKP1/BTB/POZ domain superfamily / Ankyrin repeats (3 copies) / Ankyrin repeat profile. / Ankyrin repeat region circular profile. / ankyrin repeats / Ankyrin repeat / Ankyrin repeat-containing domain superfamily / Armadillo-like helical / Ubiquitin family / Ubiquitin homologues / Ubiquitin domain profile. / Ubiquitin-like domain / Armadillo-type fold / Ubiquitin-like domain superfamily
Similarity search - Domain/homology
: / Exportin-1 / Elongin-C / Elongin-B / Ankyrin repeat and SOCS box protein 8
Similarity search - Component
Biological speciesHomo sapiens (human)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 4.21 Å
AuthorsWing, C.E. / Fung, H.Y.J. / Chook, Y.M.
Funding support United States, 7items
OrganizationGrant numberCountry
Cancer Prevention and Research Institute of Texas (CPRIT)RP220582 United States
Cancer Prevention and Research Institute of Texas (CPRIT)RP180410 United States
Cancer Prevention and Research Institute of Texas (CPRIT)150053 United States
Cancer Prevention and Research Institute of Texas (CPRIT)RP170170 United States
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)R35GM144137 United States
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)T32GM131963 United States
Welch FoundationI-1532 United States
CitationJournal: To Be Published
Title: SINE compounds activate exportin-1 degradation via an allosteric mechanism
Authors: Wing, C.E. / Fung, H.Y.J. / Kwanten, B. / Cagatay, T. / Niesman, A.B. / Jacquelyn, M. / Gharghabi, M. / Permentier, B. / Shakya, B. / Ready, J.M. / Kashyap, T. / Shacham, S. / Landesman, Y. ...Authors: Wing, C.E. / Fung, H.Y.J. / Kwanten, B. / Cagatay, T. / Niesman, A.B. / Jacquelyn, M. / Gharghabi, M. / Permentier, B. / Shakya, B. / Ready, J.M. / Kashyap, T. / Shacham, S. / Landesman, Y. / Lapalombella, R. / Daelemans, D. / Chook, Y.M.
History
DepositionApr 30, 2025Deposition site: RCSB / Processing site: RCSB
Revision 1.0Nov 26, 2025Provider: repository / Type: Initial release
Revision 1.0Nov 26, 2025Data content type: EM metadata / Data content type: EM metadata / Provider: repository / Type: Initial release
Revision 1.0Nov 26, 2025Data content type: FSC / Data content type: FSC / Provider: repository / Type: Initial release
Revision 1.0Nov 26, 2025Data content type: Half map / Part number: 1 / Data content type: Half map / Provider: repository / Type: Initial release
Revision 1.0Nov 26, 2025Data content type: Half map / Part number: 2 / Data content type: Half map / Provider: repository / Type: Initial release
Revision 1.0Nov 26, 2025Data content type: Image / Data content type: Image / Provider: repository / Type: Initial release
Revision 1.0Nov 26, 2025Data content type: Primary map / Data content type: Primary map / Provider: repository / Type: Initial release

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: Exportin-1
B: Ankyrin repeat and SOCS box protein 8
E: Elongin-C
F: Elongin-B
hetero molecules


Theoretical massNumber of molelcules
Total (without water)177,9135
Polymers177,6544
Non-polymers2591
Water00
1


  • Idetical with deposited unit
  • defined by author
  • Evidence: electron microscopy, not applicable
TypeNameSymmetry operationNumber
identity operation1_5551

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Components

#1: Protein Exportin-1 / Exp1 / Chromosome region maintenance 1 protein homolog


Mass: 123662.484 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Details: GS remaining after TEV cleavage / Source: (gene. exp.) Homo sapiens (human) / Gene: XPO1, CRM1 / Production host: Escherichia coli BL21(DE3) (bacteria) / References: UniProt: O14980
#2: Protein Ankyrin repeat and SOCS box protein 8 / ASB-8


Mass: 29869.162 Da / Num. of mol.: 1 / Fragment: residues 17-288
Source method: isolated from a genetically manipulated source
Details: GS remaining after TEV cleavage / Source: (gene. exp.) Homo sapiens (human) / Gene: ASB8, PP14212 / Production host: Escherichia coli BL21(DE3) (bacteria) / References: UniProt: Q9H765
#3: Protein Elongin-C / EloC / Elongin 15 kDa subunit / RNA polymerase II transcription factor SIII subunit C / SIII p15 / ...EloC / Elongin 15 kDa subunit / RNA polymerase II transcription factor SIII subunit C / SIII p15 / Transcription elongation factor B polypeptide 1


Mass: 10974.616 Da / Num. of mol.: 1 / Fragment: residues 17-112
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: ELOC, TCEB1 / Production host: Escherichia coli BL21(DE3) (bacteria) / References: UniProt: Q15369
#4: Protein Elongin-B / EloB / Elongin 18 kDa subunit / RNA polymerase II transcription factor SIII subunit B / SIII p18 / ...EloB / Elongin 18 kDa subunit / RNA polymerase II transcription factor SIII subunit B / SIII p18 / Transcription elongation factor B polypeptide 2


Mass: 13147.781 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Details: full-length, wildtype / Source: (gene. exp.) Homo sapiens (human) / Gene: ELOB, TCEB2 / Production host: Escherichia coli BL21(DE3) (bacteria) / References: UniProt: Q15370
#5: Chemical ChemComp-A1CBB / propan-2-yl 3-(3-phenyl-1H-1,2,4-triazol-1-yl)propanoate


Mass: 259.304 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C14H17N3O2 / Feature type: SUBJECT OF INVESTIGATION
Has ligand of interestY
Has protein modificationY

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Experimental details

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Experiment

ExperimentMethod: ELECTRON MICROSCOPY
EM experimentAggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction

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Sample preparation

ComponentName: Ternary complex of full-length human XPO1 conjugated to KPT-UTSW1 and bound to ASB8-ELOB/C
Type: COMPLEX / Entity ID: #1-#4 / Source: RECOMBINANT
Molecular weightValue: 0.178 MDa / Experimental value: NO
Source (natural)Organism: Homo sapiens (human)
Source (recombinant)Organism: Escherichia coli (E. coli) / Strain: BL21(DE3)
Buffer solutionpH: 7.4
Details: 20 mM HEPES pH 7.4, 110 mM KOAc, 2 mM Mg(OAc)2, 2 mM TCEP
SpecimenConc.: 0.8 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
Specimen supportGrid material: COPPER / Grid mesh size: 300 divisions/in. / Grid type: C-flat-1.2/1.3
VitrificationInstrument: FEI VITROBOT MARK IV / Cryogen name: ETHANE / Humidity: 95 % / Chamber temperature: 277 K

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Electron microscopy imaging

Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company
MicroscopyModel: TFS KRIOS
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM
Electron lensMode: BRIGHT FIELD / Nominal magnification: 105000 X / Nominal defocus max: 2200 nm / Nominal defocus min: 900 nm
Specimen holderSpecimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER
Image recordingElectron dose: 60 e/Å2 / Film or detector model: FEI FALCON IV (4k x 4k) / Num. of grids imaged: 2 / Num. of real images: 11172
EM imaging opticsEnergyfilter name: GIF Bioquantum / Energyfilter slit width: 10 eV

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Processing

EM software
IDNameCategory
1cryoSPARCparticle selection
2Topazparticle selection
3SerialEMimage acquisition
5cryoSPARCCTF correction
8UCSF ChimeraXmodel fitting
9ISOLDEmodel fitting
10Cootmodel fitting
12cryoSPARCinitial Euler assignment
13cryoSPARCfinal Euler assignment
14cryoSPARCclassification
15cryoSPARC3D reconstruction
16PHENIXmodel refinement
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
Particle selectionNum. of particles selected: 2081808 / Details: template picking followed by Topaz picking
3D reconstructionResolution: 4.21 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 215025 / Symmetry type: POINT
Atomic model buildingB value: 102.26 / Protocol: OTHER / Space: REAL
Details: Initial models were docked into maps using UCSF ChimeraX then manually built using Isolde and Coot and refined in PHENIX
Atomic model building
ID 3D fitting-IDChain-IDDetailsSource nameType
11Astarting model for XPO1 from final model of selinexor-XPO1-ASB8(R197A)-ELOB/C in this studyOtherexperimental model
21Bstarting model for ASB8 from final model of selinexor-XPO1-ASB8(R197A)-ELOB/C in this studyOtherexperimental model
31Estarting model for ELOC from final model of selinexor-XPO1-ASB8(R197A)-ELOB/C in this studyOtherexperimental model
41Fstarting model for ELOB from final model of selinexor-XPO1-ASB8(R197A)-ELOB/C in this studyOtherexperimental model
Refine LS restraints
Refine-IDTypeDev idealNumber
ELECTRON MICROSCOPYf_bond_d0.0028057
ELECTRON MICROSCOPYf_angle_d0.50910893
ELECTRON MICROSCOPYf_dihedral_angle_d12.4722978
ELECTRON MICROSCOPYf_chiral_restr0.0341265
ELECTRON MICROSCOPYf_plane_restr0.0041373

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