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- PDB-9rkd: Insulin receptor ectodomain in apo-conformation -

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Basic information

Entry
Database: PDB / ID: 9rkd
TitleInsulin receptor ectodomain in apo-conformation
Components
  • Insulin receptor
  • Isoform Short of Insulin receptor
KeywordsMEMBRANE PROTEIN / complex / IR / apo-form
Function / homology
Function and homology information


regulation of female gonad development / positive regulation of meiotic cell cycle / insulin-like growth factor II binding / positive regulation of developmental growth / male sex determination / insulin receptor complex / insulin-like growth factor I binding / insulin receptor activity / positive regulation of protein-containing complex disassembly / exocrine pancreas development ...regulation of female gonad development / positive regulation of meiotic cell cycle / insulin-like growth factor II binding / positive regulation of developmental growth / male sex determination / insulin receptor complex / insulin-like growth factor I binding / insulin receptor activity / positive regulation of protein-containing complex disassembly / exocrine pancreas development / dendritic spine maintenance / adrenal gland development / insulin binding / cargo receptor activity / PTB domain binding / Signaling by Insulin receptor / IRS activation / neuronal cell body membrane / positive regulation of respiratory burst / amyloid-beta clearance / regulation of embryonic development / insulin receptor substrate binding / positive regulation of receptor internalization / epidermis development / positive regulation of glycogen biosynthetic process / Signal attenuation / protein kinase activator activity / transport across blood-brain barrier / phosphatidylinositol 3-kinase binding / heart morphogenesis / Insulin receptor recycling / insulin-like growth factor receptor binding / neuron projection maintenance / positive regulation of mitotic nuclear division / Insulin receptor signalling cascade / receptor-mediated endocytosis / dendrite membrane / positive regulation of glycolytic process / positive regulation of D-glucose import across plasma membrane / learning / receptor protein-tyrosine kinase / caveola / receptor internalization / cellular response to growth factor stimulus / male gonad development / cellular response to insulin stimulus / memory / positive regulation of nitric oxide biosynthetic process / insulin receptor signaling pathway / protein autophosphorylation / late endosome / glucose homeostasis / amyloid-beta binding / PI5P, PP2A and IER3 Regulate PI3K/AKT Signaling / protein tyrosine kinase activity / positive regulation of MAPK cascade / positive regulation of canonical NF-kappaB signal transduction / positive regulation of phosphatidylinositol 3-kinase/protein kinase B signal transduction / lysosome / signaling receptor complex / endosome membrane / positive regulation of cell migration / G protein-coupled receptor signaling pathway / external side of plasma membrane / protein domain specific binding / axon / positive regulation of cell population proliferation / symbiont entry into host cell / regulation of DNA-templated transcription / positive regulation of DNA-templated transcription / GTP binding / protein-containing complex binding / extracellular exosome / ATP binding / membrane / identical protein binding / plasma membrane
Similarity search - Function
Insulin receptor, trans-membrane domain / Insulin receptor trans-membrane segment / Tyrosine-protein kinase, insulin-like receptor / Tyrosine-protein kinase, receptor class II, conserved site / Receptor tyrosine kinase class II signature. / Receptor L-domain / Furin-like cysteine-rich domain / Receptor L-domain superfamily / Furin-like cysteine rich region / Receptor L domain ...Insulin receptor, trans-membrane domain / Insulin receptor trans-membrane segment / Tyrosine-protein kinase, insulin-like receptor / Tyrosine-protein kinase, receptor class II, conserved site / Receptor tyrosine kinase class II signature. / Receptor L-domain / Furin-like cysteine-rich domain / Receptor L-domain superfamily / Furin-like cysteine rich region / Receptor L domain / Furin-like repeat / Furin-like repeats / Growth factor receptor cysteine-rich domain superfamily / : / Fibronectin type 3 domain / Fibronectin type-III domain profile. / Fibronectin type III / Fibronectin type III superfamily / Tyrosine-protein kinase, catalytic domain / Tyrosine kinase, catalytic domain / Tyrosine protein kinases specific active-site signature. / Tyrosine-protein kinase, active site / Protein tyrosine and serine/threonine kinase / Serine-threonine/tyrosine-protein kinase, catalytic domain / Protein kinase, ATP binding site / Protein kinases ATP-binding region signature. / Immunoglobulin-like fold / Protein kinase domain profile. / Protein kinase domain / Protein kinase-like domain superfamily
Similarity search - Domain/homology
Biological speciesHomo sapiens (human)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 6 Å
AuthorsPolak, M. / Novacek, J. / Jiracek, J.
Funding support Czech Republic, 2items
OrganizationGrant numberCountry
Ministry of Education, Youth and Sports of the Czech RepublicLM2023042 Czech Republic
Ministry of Education, Youth and Sports of the Czech RepublicLX22NPO5104 Czech Republic
CitationJournal: To Be Published
Title: Antagonistic insulin mimetics lock the insulin receptor in an alternative apo-state
Authors: Polak, M. / Pinkas, M. / Hernandez, M.S.G. / Fabre, B. / Lubos, M. / Zakova, L. / Grzybek, M. / Schaefer, I.B. / Coskun, U. / Jiracek, J. / Novacek, J.
History
DepositionJun 13, 2025Deposition site: PDBE / Processing site: PDBE
Revision 1.0Jun 24, 2026Provider: repository / Type: Initial release
Revision 1.0Jun 24, 2026Data content type: EM metadata / Data content type: EM metadata / Provider: repository / Type: Initial release
Revision 1.0Jun 24, 2026Data content type: Half map / Part number: 1 / Data content type: Half map / Provider: repository / Type: Initial release
Revision 1.0Jun 24, 2026Data content type: Half map / Part number: 2 / Data content type: Half map / Provider: repository / Type: Initial release
Revision 1.0Jun 24, 2026Data content type: Image / Data content type: Image / Provider: repository / Type: Initial release
Revision 1.0Jun 24, 2026Data content type: Primary map / Data content type: Primary map / Provider: repository / Type: Initial release

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

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Assembly

Deposited unit
A: Isoform Short of Insulin receptor
B: Insulin receptor
C: Isoform Short of Insulin receptor
D: Insulin receptor


Theoretical massNumber of molelcules
Total (without water)201,9574
Polymers201,9574
Non-polymers00
Water00
1


  • Idetical with deposited unit
  • defined by author&software
  • Evidence: electron microscopy, not applicable
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1

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Components

#1: Protein Isoform Short of Insulin receptor / IR


Mass: 82464.664 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: INSR / Production host: Homo sapiens (human)
References: UniProt: P06213, receptor protein-tyrosine kinase
#2: Protein Insulin receptor / IR


Mass: 18513.900 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: INSR / Production host: Homo sapiens (human)
References: UniProt: P06213, receptor protein-tyrosine kinase
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: Insulin receptor ecto-domain in inverted-V apo-conformation
Type: COMPLEX / Entity ID: all / Source: RECOMBINANT
Molecular weightValue: 0.2 MDa / Experimental value: NO
Source (natural)Organism: Homo sapiens (human)
Source (recombinant)Organism: Homo sapiens (human)
Buffer solutionpH: 7.5
SpecimenEmbedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
VitrificationInstrument: FEI VITROBOT MARK IV / Cryogen name: ETHANE / Humidity: 90 % / Chamber temperature: 278 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: 2400 nm / Nominal defocus min: 1200 nm / Cs: 2.7 mm / C2 aperture diameter: 30 µm / Alignment procedure: COMA FREE
Specimen holderCryogen: NITROGEN / Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER / Temperature (max): 80 K / Temperature (min): 80 K
Image recordingElectron dose: 43.2 e/Å2 / Film or detector model: GATAN K3 BIOQUANTUM (6k x 4k)

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Processing

EM software
IDNameVersionCategory
1cryoSPARCparticle selection
13RELION53D reconstruction
CTF correctionType: PHASE FLIPPING ONLY
3D reconstructionResolution: 6 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 34347 / Symmetry type: POINT
Atomic model buildingB value: 480 / Protocol: FLEXIBLE FIT / Space: REAL / Target criteria: cryoss-correlation coefficient

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