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- PDB-7u6d: Head region of insulin receptor ectodomain (A-isoform) bound to t... -
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Basic information
Entry | Database: PDB / ID: 7u6d | |||||||||||||||||||||
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Title | Head region of insulin receptor ectodomain (A-isoform) bound to the non-insulin agonist IM459 | |||||||||||||||||||||
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![]() | SIGNALING PROTEIN/AGONIST / insulin receptor / insulin-mimic peptide / insulin receptor agonist / SIGNALING PROTEIN-AGONIST complex | |||||||||||||||||||||
Function / homology | ![]() 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 / positive regulation of protein-containing complex disassembly / insulin receptor activity / 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 / positive regulation of protein-containing complex disassembly / insulin receptor activity / exocrine pancreas development / dendritic spine maintenance / cargo receptor activity / insulin binding / adrenal gland development / neuronal cell body membrane / PTB domain binding / Signaling by Insulin receptor / IRS activation / positive regulation of respiratory burst / amyloid-beta clearance / regulation of embryonic development / positive regulation of receptor internalization / insulin receptor substrate binding / protein kinase activator activity / epidermis development / positive regulation of glycogen biosynthetic process / Signal attenuation / heart morphogenesis / transport across blood-brain barrier / phosphatidylinositol 3-kinase binding / Insulin receptor recycling / insulin-like growth factor receptor binding / dendrite membrane / neuron projection maintenance / positive regulation of mitotic nuclear division / Insulin receptor signalling cascade / receptor-mediated endocytosis / positive regulation of glycolytic process / positive regulation of D-glucose import / learning / receptor protein-tyrosine kinase / caveola / cellular response to growth factor stimulus / receptor internalization / memory / male gonad development / cellular response to insulin stimulus / positive regulation of nitric oxide biosynthetic process / late endosome / insulin receptor signaling pathway / glucose homeostasis / amyloid-beta binding / protein autophosphorylation / PI5P, PP2A and IER3 Regulate PI3K/AKT Signaling / protein tyrosine kinase activity / endosome membrane / lysosome / receptor complex / 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 / axon / protein domain specific binding / external side of plasma membrane / positive regulation of cell population proliferation / symbiont entry into host cell / regulation of DNA-templated transcription / GTP binding / positive regulation of DNA-templated transcription / protein-containing complex binding / extracellular exosome / ATP binding / identical protein binding / membrane / plasma membrane Similarity search - Function | |||||||||||||||||||||
Biological species | ![]() synthetic construct (others) | |||||||||||||||||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 5.03 Å | |||||||||||||||||||||
![]() | Kirk, N.S. / Lawrence, M.C. | |||||||||||||||||||||
Funding support | ![]()
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![]() | ![]() Title: Activation of the human insulin receptor by non-insulin-related peptides. Authors: Nicholas S Kirk / Qi Chen / Yingzhe Ginger Wu / Anastasia L Asante / Haitao Hu / Juan F Espinosa / Francisco Martínez-Olid / Mai B Margetts / Faiz A Mohammed / Vladislav V Kiselyov / David ...Authors: Nicholas S Kirk / Qi Chen / Yingzhe Ginger Wu / Anastasia L Asante / Haitao Hu / Juan F Espinosa / Francisco Martínez-Olid / Mai B Margetts / Faiz A Mohammed / Vladislav V Kiselyov / David G Barrett / Michael C Lawrence / ![]() ![]() ![]() Abstract: The human insulin receptor signalling system plays a critical role in glucose homeostasis. Insulin binding brings about extensive conformational change in the receptor extracellular region that in ...The human insulin receptor signalling system plays a critical role in glucose homeostasis. Insulin binding brings about extensive conformational change in the receptor extracellular region that in turn effects trans-activation of the intracellular tyrosine kinase domains and downstream signalling. Of particular therapeutic interest is whether insulin receptor signalling can be replicated by molecules other than insulin. Here, we present single-particle cryoEM structures that show how a 33-mer polypeptide unrelated to insulin can cross-link two sites on the receptor surface and direct the receptor into a signalling-active conformation. The 33-mer polypeptide engages the receptor by two helical binding motifs that are each potentially mimicable by small molecules. The resultant conformation of the receptor is distinct from-but related to-those in extant three-dimensional structures of the insulin-complexed receptor. Our findings thus illuminate unexplored pathways for controlling the signalling of the insulin receptor as well as opportunities for development of insulin mimetics. | |||||||||||||||||||||
History |
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Structure visualization
Structure viewer | Molecule: ![]() ![]() |
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Downloads & links
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Download
PDBx/mmCIF format | ![]() | 202.5 KB | Display | ![]() |
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PDB format | ![]() | 146.1 KB | Display | ![]() |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
Others | ![]() |
-Validation report
Summary document | ![]() | 1.5 MB | Display | ![]() |
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Full document | ![]() | 1.5 MB | Display | |
Data in XML | ![]() | 39.4 KB | Display | |
Data in CIF | ![]() | 55.1 KB | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 26363MC ![]() 7u6eC ![]() 8di2C 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
#1: Protein/peptide | Mass: 4000.595 Da / Num. of mol.: 1 / Source method: obtained synthetically / Source: (synth.) synthetic construct (others) | ||||
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#2: Protein | Mass: 104607.664 Da / Num. of mol.: 2 / Fragment: ectodomain (UNP residues 28-943) Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() References: UniProt: P06213, receptor protein-tyrosine kinase Has ligand of interest | N | Has protein modification | Y | |
-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: Complex of non-insulin insulin receptor agonist IM459 bound to the insulin receptor ectodomain (A-isoform) construct IR-A(ecto) Type: COMPLEX / Entity ID: all / Source: MULTIPLE SOURCES |
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Source (natural) | Organism: ![]() |
Source (recombinant) | Organism: ![]() ![]() |
Buffer solution | pH: 8 |
Specimen | Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES |
Vitrification | Cryogen name: ETHANE |
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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 defocus max: 4000 nm / Nominal defocus min: 500 nm |
Image recording | Electron dose: 69.5 e/Å2 / Film or detector model: GATAN K2 SUMMIT (4k x 4k) |
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Processing
Software | Name: PHENIX / Version: 1.19.2_4158: / Classification: refinement | ||||||||||||||||||||||||
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EM software | Name: PHENIX / Category: model refinement | ||||||||||||||||||||||||
CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||
3D reconstruction | Resolution: 5.03 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 184000 / Symmetry type: POINT | ||||||||||||||||||||||||
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