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- PDB-8dtl: Cryo-EM structure of insulin receptor (IR) bound with S597 peptide -

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Basic information

Entry
Database: PDB / ID: 8dtl
TitleCryo-EM structure of insulin receptor (IR) bound with S597 peptide
Components
  • Insulin mimetic peptide S597
  • Insulin receptor
KeywordsSIGNALING PROTEIN / Insulin receptor / S597
Function / homology
Function and homology information


Signaling by Insulin receptor / IRS activation / Insulin receptor signalling cascade / Signal attenuation / Insulin receptor recycling / PI5P, PP2A and IER3 Regulate PI3K/AKT Signaling / regulation of female gonad development / positive regulation of meiotic cell cycle / insulin-like growth factor II binding / positive regulation of developmental growth ...Signaling by Insulin receptor / IRS activation / Insulin receptor signalling cascade / Signal attenuation / Insulin receptor recycling / PI5P, PP2A and IER3 Regulate PI3K/AKT Signaling / 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 / exocrine pancreas development / nuclear lumen / insulin binding / adrenal gland development / PTB domain binding / positive regulation of respiratory burst / regulation of embryonic development / insulin receptor substrate binding / positive regulation of receptor internalization / epidermis development / protein kinase activator activity / positive regulation of glycogen biosynthetic process / heart morphogenesis / phosphatidylinositol 3-kinase binding / insulin-like growth factor receptor binding / positive regulation of mitotic nuclear division / positive regulation of glycolytic process / animal organ morphogenesis / positive regulation of D-glucose import across plasma membrane / receptor protein-tyrosine kinase / caveola / receptor internalization / cellular response to growth factor stimulus / male gonad development / recycling endosome membrane / positive regulation of nitric oxide biosynthetic process / insulin receptor signaling pathway / nuclear envelope / late endosome / glucose homeostasis / amyloid-beta binding / protein autophosphorylation / protein tyrosine kinase activity / lysosome / positive regulation of canonical NF-kappaB signal transduction / positive regulation of phosphatidylinositol 3-kinase/protein kinase B signal transduction / receptor complex / positive regulation of MAPK cascade / positive regulation of cell migration / G protein-coupled receptor signaling pathway / positive regulation of cell population proliferation / symbiont entry into host cell / positive regulation of DNA-templated transcription / GTP binding / protein-containing complex binding / ATP binding / membrane / 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 / Fibronectin type III domain / 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 / Serine-threonine/tyrosine-protein kinase, catalytic domain / Protein tyrosine and serine/threonine kinase / 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 speciesMus musculus (house mouse)
synthetic construct (others)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 5.4 Å
AuthorsPark, J. / Li, J. / Mayer, J.P. / Ball, K.A. / Wu, J.Y. / Hall, C. / Accili, D. / Stowell, M.H.B. / Bai, X.C. / Choi, E.
Funding support United States, 1items
OrganizationGrant numberCountry
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)R01GM136976 United States
CitationJournal: Nat Commun / Year: 2022
Title: Activation of the insulin receptor by an insulin mimetic peptide.
Authors: Junhee Park / Jie Li / John P Mayer / Kerri A Ball / Jiayi Wu / Catherine Hall / Domenico Accili / Michael H B Stowell / Xiao-Chen Bai / Eunhee Choi /
Abstract: Insulin receptor (IR) signaling defects cause a variety of metabolic diseases including diabetes. Moreover, inherited mutations of the IR cause severe insulin resistance, leading to early morbidity ...Insulin receptor (IR) signaling defects cause a variety of metabolic diseases including diabetes. Moreover, inherited mutations of the IR cause severe insulin resistance, leading to early morbidity and mortality with limited therapeutic options. A previously reported selective IR agonist without sequence homology to insulin, S597, activates IR and mimics insulin's action on glycemic control. To elucidate the mechanism of IR activation by S597, we determine cryo-EM structures of the mouse IR/S597 complex. Unlike the compact T-shaped active IR resulting from the binding of four insulins to two distinct sites, two S597 molecules induce and stabilize an extended T-shaped IR through the simultaneous binding to both the L1 domain of one protomer and the FnIII-1 domain of another. Importantly, S597 fully activates IR mutants that disrupt insulin binding or destabilize the insulin-induced compact T-shape, thus eliciting insulin-like signaling. S597 also selectively activates IR signaling among different tissues and triggers IR endocytosis in the liver. Overall, our structural and functional studies guide future efforts to develop insulin mimetics targeting insulin resistance caused by defects in insulin binding and stabilization of insulin-activated state of IR, demonstrating the potential of structure-based drug design for insulin-resistant diseases.
History
DepositionJul 25, 2022Deposition site: RCSB / Processing site: RCSB
Revision 1.0Sep 7, 2022Provider: repository / Type: Initial release
Revision 1.1Oct 12, 2022Group: Database references / Category: citation / citation_author
Item: _citation.country / _citation.journal_abbrev ..._citation.country / _citation.journal_abbrev / _citation.journal_id_CSD / _citation.journal_id_ISSN / _citation.journal_volume / _citation.page_first / _citation.page_last / _citation.pdbx_database_id_DOI / _citation.pdbx_database_id_PubMed / _citation.title / _citation.year / _citation_author.identifier_ORCID / _citation_author.name
Revision 1.2Oct 23, 2024Group: Data collection / Structure summary
Category: chem_comp_atom / chem_comp_bond ...chem_comp_atom / chem_comp_bond / em_admin / pdbx_entry_details / pdbx_modification_feature
Item: _em_admin.last_update

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
C: Insulin mimetic peptide S597
A: Insulin receptor
B: Insulin receptor
D: Insulin mimetic peptide S597


Theoretical massNumber of molelcules
Total (without water)314,0434
Polymers314,0434
Non-polymers00
Water00
1


  • Idetical with deposited unit
  • defined by author
  • Evidence: gel filtration
TypeNameSymmetry operationNumber
identity operation1_5551

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Components

#1: Protein/peptide Insulin mimetic peptide S597


Mass: 3789.079 Da / Num. of mol.: 2 / Source method: obtained synthetically / Source: (synth.) synthetic construct (others)
#2: Protein Insulin receptor / IR


Mass: 153232.578 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Mus musculus (house mouse) / Gene: Insr / Production host: Homo sapiens (human)
References: UniProt: P15208, 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 bound with S597 peptide / Type: COMPLEX / Entity ID: all / Source: MULTIPLE SOURCES
Molecular weightExperimental value: NO
Source (natural)Organism: Mus musculus (house mouse)
Source (recombinant)Organism: Homo sapiens (human)
Buffer solutionpH: 7.4
SpecimenConc.: 6 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
Specimen supportGrid material: GOLD / Grid mesh size: 300 divisions/in. / Grid type: Quantifoil R1.2/1.3
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: 2600 nm / Nominal defocus min: 1600 nm
Image recordingElectron dose: 60 e/Å2 / Film or detector model: GATAN K3 BIOQUANTUM (6k x 4k)
EM imaging opticsEnergyfilter name: GIF Bioquantum / Energyfilter slit width: 20 eV

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Processing

EM software
IDNameCategory
1RELIONparticle selection
2SerialEMimage acquisition
4GctfCTF correction
7UCSF Chimeramodel fitting
10RELIONfinal Euler assignment
11RELIONclassification
12RELION3D reconstruction
13PHENIXmodel refinement
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
Particle selectionNum. of particles selected: 1282550
SymmetryPoint symmetry: C2 (2 fold cyclic)
3D reconstructionResolution: 5.4 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 152565 / Symmetry type: POINT
Atomic model buildingProtocol: RIGID BODY FIT

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