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- PDB-7yq5: human insulin receptor bound with A62 DNA aptamer and insulin -

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Basic information

Entry
Database: PDB / ID: 7yq5
Titlehuman insulin receptor bound with A62 DNA aptamer and insulin
Components
  • IR-A62 aptamer
  • Insulin A chain
  • Insulin, isoform 2
  • Isoform Short of Insulin receptor
KeywordsSTRUCTURAL PROTEIN / receptor-ligand complex_B_overall
Function / homology
Function and homology information


negative regulation of NAD(P)H oxidase activity / negative regulation of glycogen catabolic process / positive regulation of nitric oxide mediated signal transduction / negative regulation of fatty acid metabolic process / Signaling by Insulin receptor / negative regulation of feeding behavior / IRS activation / Insulin processing / regulation of protein secretion / positive regulation of peptide hormone secretion ...negative regulation of NAD(P)H oxidase activity / negative regulation of glycogen catabolic process / positive regulation of nitric oxide mediated signal transduction / negative regulation of fatty acid metabolic process / Signaling by Insulin receptor / negative regulation of feeding behavior / IRS activation / Insulin processing / regulation of protein secretion / positive regulation of peptide hormone secretion / positive regulation of respiratory burst / Regulation of gene expression in beta cells / negative regulation of acute inflammatory response / positive regulation of protein autophosphorylation / alpha-beta T cell activation / positive regulation of dendritic spine maintenance / Synthesis, secretion, and deacylation of Ghrelin / negative regulation of respiratory burst involved in inflammatory response / negative regulation of protein secretion / positive regulation of glycogen biosynthetic process / negative regulation of gluconeogenesis / Signal attenuation / fatty acid homeostasis / FOXO-mediated transcription of oxidative stress, metabolic and neuronal genes / positive regulation of insulin receptor signaling pathway / negative regulation of lipid catabolic process / regulation of protein localization to plasma membrane / positive regulation of lipid biosynthetic process / negative regulation of oxidative stress-induced intrinsic apoptotic signaling pathway / activation of protein kinase B activity / COPI-mediated anterograde transport / transport vesicle / nitric oxide-cGMP-mediated signaling / negative regulation of reactive oxygen species biosynthetic process / Insulin receptor recycling / insulin-like growth factor receptor binding / positive regulation of brown fat cell differentiation / NPAS4 regulates expression of target genes / neuron projection maintenance / endoplasmic reticulum-Golgi intermediate compartment membrane / positive regulation of nitric-oxide synthase activity / positive regulation of mitotic nuclear division / Insulin receptor signalling cascade / regulation of transmembrane transporter activity / positive regulation of glycolytic process / positive regulation of long-term synaptic potentiation / endosome lumen / positive regulation of cytokine production / acute-phase response / positive regulation of D-glucose import / positive regulation of protein secretion / positive regulation of cell differentiation / Regulation of insulin secretion / insulin receptor binding / wound healing / receptor protein-tyrosine kinase / negative regulation of protein catabolic process / hormone activity / regulation of synaptic plasticity / positive regulation of neuron projection development / positive regulation of protein localization to nucleus / Golgi lumen / cognition / glucose metabolic process / vasodilation / insulin receptor signaling pathway / glucose homeostasis / cell-cell signaling / regulation of protein localization / PI5P, PP2A and IER3 Regulate PI3K/AKT Signaling / protease binding / positive regulation of cell growth / secretory granule lumen / positive regulation of canonical NF-kappaB signal transduction / positive regulation of phosphatidylinositol 3-kinase/protein kinase B signal transduction / positive regulation of MAPK cascade / positive regulation of cell migration / G protein-coupled receptor signaling pathway / Amyloid fiber formation / endoplasmic reticulum lumen / Golgi membrane / negative regulation of gene expression / positive regulation of cell population proliferation / positive regulation of gene expression / regulation of DNA-templated transcription / extracellular space / extracellular region / identical protein binding
Similarity search - Function
Insulin / Insulin family / Insulin-like / Insulin/IGF/Relaxin family / Insulin / insulin-like growth factor / relaxin family. / Insulin, conserved site / Insulin family signature. / Insulin-like superfamily
Similarity search - Domain/homology
DNA / DNA (> 10) / Insulin, isoform 2 / Insulin / Isoform Short of Insulin receptor
Similarity search - Component
Biological speciesHomo sapiens (human)
synthetic construct (others)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 4.27 Å
AuthorsKim, J. / Yunn, N. / Ryu, S. / Cho, Y.
Funding support Korea, Republic Of, 1items
OrganizationGrant numberCountry
National Research Foundation (NRF, Korea)2017M3A9F6029736 Korea, Republic Of
CitationJournal: Nat Commun / Year: 2022
Title: Functional selectivity of insulin receptor revealed by aptamer-trapped receptor structures.
Authors: Junhong Kim / Na-Oh Yunn / Mangeun Park / Jihan Kim / Seongeun Park / Yoojoong Kim / Jeongeun Noh / Sung Ho Ryu / Yunje Cho /
Abstract: Activation of insulin receptor (IR) initiates a cascade of conformational changes and autophosphorylation events. Herein, we determined three structures of IR trapped by aptamers using cryo-electron ...Activation of insulin receptor (IR) initiates a cascade of conformational changes and autophosphorylation events. Herein, we determined three structures of IR trapped by aptamers using cryo-electron microscopy. The A62 agonist aptamer selectively activates metabolic signaling. In the absence of insulin, the two A62 aptamer agonists of IR adopt an insulin-accessible arrowhead conformation by mimicking site-1/site-2' insulin coordination. Insulin binding at one site triggers conformational changes in one protomer, but this movement is blocked in the other protomer by A62 at the opposite site. A62 binding captures two unique conformations of IR with a similar stalk arrangement, which underlie Tyr1150 mono-phosphorylation (m-pY1150) and selective activation for metabolic signaling. The A43 aptamer, a positive allosteric modulator, binds at the opposite side of the insulin-binding module, and stabilizes the single insulin-bound IR structure that brings two FnIII-3 regions into closer proximity for full activation. Our results suggest that spatial proximity of the two FnIII-3 ends is important for m-pY1150, but multi-phosphorylation of IR requires additional conformational rearrangement of intracellular domains mediated by coordination between extracellular and transmembrane domains.
History
DepositionAug 5, 2022Deposition site: PDBJ / Processing site: PDBJ
Revision 1.0Nov 9, 2022Provider: repository / Type: Initial release
Revision 1.0Nov 9, 2022Data content type: EM metadata / Data content type: EM metadata / Provider: repository / Type: Initial release
Revision 1.0Nov 9, 2022Data content type: Half map / Part number: 1 / Data content type: Half map / Provider: repository / Type: Initial release
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Revision 1.0Nov 9, 2022Data content type: Image / Data content type: Image / Provider: repository / Type: Initial release
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Revision 1.0Nov 9, 2022Data content type: Primary map / Data content type: Primary map / Provider: repository / Type: Initial release
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Revision 1.0Nov 9, 2022Data content type: Primary map / Data content type: Primary map / Provider: repository / Type: Initial release
Revision 1.1May 8, 2024Group: Data collection / Database references / Category: chem_comp_atom / chem_comp_bond / citation
Item: _citation.page_last / _citation.pdbx_database_id_PubMed / _citation.title
Revision 1.2Nov 6, 2024Group: Data collection / Structure summary
Category: em_admin / pdbx_entry_details / pdbx_modification_feature
Item: _em_admin.last_update / _pdbx_entry_details.has_protein_modification
Revision 1.3Jun 25, 2025Group: Data collection / Category: em_admin / em_software / Item: _em_admin.last_update / _em_software.name
Revision 1.1Jun 25, 2025Data content type: EM metadata / Data content type: EM metadata / EM metadata / Group: Data processing / Experimental summary / Data content type: EM metadata / EM metadata / Category: em_admin / em_software / Data content type: EM metadata / EM metadata / Item: _em_admin.last_update / _em_software.name

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: Insulin A chain
B: Insulin, isoform 2
G: IR-A62 aptamer
F: Isoform Short of Insulin receptor
E: Isoform Short of Insulin receptor


Theoretical massNumber of molelcules
Total (without water)221,0185
Polymers221,0185
Non-polymers00
Water00
1


  • Idetical with deposited unit
  • defined by author
  • Evidence: assay for oligomerization
TypeNameSymmetry operationNumber
identity operation1_5551

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Components

#1: Protein/peptide Insulin A chain / Small chain


Mass: 2383.698 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: INS / Cell line (production host): HEK293F / Production host: Homo sapiens (human) / References: UniProt: P01308
#2: Protein/peptide Insulin, isoform 2 / INS-IGF2 readthrough transcript protein


Mass: 2860.250 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: INS-IGF2 / Cell line (production host): HEK293F / Production host: Homo sapiens (human) / References: UniProt: F8WCM5
#3: DNA chain IR-A62 aptamer


Mass: 8526.799 Da / Num. of mol.: 1 / Source method: obtained synthetically / Source: (synth.) synthetic construct (others)
#4: Protein Isoform Short of Insulin receptor / IR


Mass: 103623.578 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: INSR / Cell line (production host): HEK293F / Production host: Homo sapiens (human)
References: UniProt: P06213-2, receptor protein-tyrosine kinase
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

Component
IDNameTypeEntity IDParent-IDSource
1receptor-ligand-complex_B_overallCOMPLEXall0MULTIPLE SOURCES
2Insulin, Insulin receptorCOMPLEX#1-#2, #41RECOMBINANT
3DNACOMPLEX#31SYNTHETIC
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
VitrificationCryogen name: ETHANE

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Electron microscopy imaging

Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company
MicroscopyModel: FEI TITAN KRIOS
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM
Electron lensMode: BRIGHT FIELD / Nominal defocus max: 2250 nm / Nominal defocus min: 500 nm
Image recordingElectron dose: 50 e/Å2 / Film or detector model: GATAN K3 (6k x 4k)

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Processing

SoftwareName: PHENIX / Version: 1.14_3260: / Classification: refinement
EM softwareName: PHENIX / Category: model refinement
CTF correctionType: NONE
3D reconstructionResolution: 4.27 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 163150 / Symmetry type: POINT

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