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- PDB-7stk: Full-length insulin receptor bound with unsaturated insulin WT (2... -
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Basic information
Entry | Database: PDB / ID: 7stk | ||||||
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Title | Full-length insulin receptor bound with unsaturated insulin WT (2 insulins bound) asymmetric conformation (Conformation 2) | ||||||
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![]() | SIGNALING PROTEIN / insulin receptor / site 1 binding deficient mutant insulin | ||||||
Function / homology | ![]() 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 / insulin receptor complex / male sex determination / insulin-like growth factor I binding / exocrine pancreas development / nuclear lumen / insulin binding / negative regulation of NAD(P)H oxidase activity / adrenal gland development / negative regulation of glycogen catabolic process / PTB domain binding / negative regulation of feeding behavior / positive regulation of nitric oxide mediated signal transduction / negative regulation of fatty acid metabolic process / Signaling by Insulin receptor / IRS activation / Insulin processing / regulation of protein secretion / positive regulation of peptide hormone secretion / positive regulation of protein autophosphorylation / Regulation of gene expression in beta cells / positive regulation of respiratory burst / negative regulation of acute inflammatory response / regulation of embryonic development / alpha-beta T cell activation / positive regulation of receptor internalization / insulin receptor substrate binding / protein kinase activator activity / positive regulation of dendritic spine maintenance / Synthesis, secretion, and deacylation of Ghrelin / negative regulation of respiratory burst involved in inflammatory response / positive regulation of insulin receptor signaling pathway / epidermis development / negative regulation of protein secretion / activation of protein kinase B activity / negative regulation of gluconeogenesis / positive regulation of glycogen biosynthetic process / fatty acid homeostasis / Signal attenuation / FOXO-mediated transcription of oxidative stress, metabolic and neuronal genes / negative regulation of lipid catabolic process / positive regulation of lipid biosynthetic process / regulation of protein localization to plasma membrane / heart morphogenesis / negative regulation of oxidative stress-induced intrinsic apoptotic signaling pathway / phosphatidylinositol 3-kinase binding / transport vesicle / nitric oxide-cGMP-mediated signaling / COPI-mediated anterograde transport / positive regulation of nitric-oxide synthase activity / Insulin receptor recycling / negative regulation of reactive oxygen species biosynthetic process / 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 mitotic nuclear division / Insulin receptor signalling cascade / insulin receptor activity / regulation of transmembrane transporter activity / positive regulation of glycolytic process / positive regulation of cytokine production / animal organ morphogenesis / positive regulation of long-term synaptic potentiation / endosome lumen / acute-phase response / positive regulation of protein secretion / positive regulation of D-glucose import / insulin receptor binding / positive regulation of cell differentiation / Regulation of insulin secretion / wound healing / receptor protein-tyrosine kinase / negative regulation of protein catabolic process / hormone activity / regulation of synaptic plasticity / positive regulation of neuron projection development / cellular response to growth factor stimulus / receptor internalization / caveola / positive regulation of protein localization to nucleus / Golgi lumen / cognition / recycling endosome membrane / glucose metabolic process / male gonad development / positive regulation of nitric oxide biosynthetic process / vasodilation / late endosome / insulin receptor signaling pathway Similarity search - Function | ||||||
Biological species | ![]() ![]() ![]() | ||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 4 Å | ||||||
![]() | Bai, X.C. / Choi, E. | ||||||
Funding support | ![]()
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![]() | ![]() Title: Synergistic activation of the insulin receptor via two distinct sites. Authors: Jie Li / Junhee Park / John P Mayer / Kristofor J Webb / Emiko Uchikawa / Jiayi Wu / Shun Liu / Xuewu Zhang / Michael H B Stowell / Eunhee Choi / Xiao-Chen Bai / ![]() Abstract: Insulin receptor (IR) signaling controls multiple facets of animal physiology. Maximally four insulins bind to IR at two distinct sites, termed site-1 and site-2. However, the precise functional ...Insulin receptor (IR) signaling controls multiple facets of animal physiology. Maximally four insulins bind to IR at two distinct sites, termed site-1 and site-2. However, the precise functional roles of each binding event during IR activation remain unresolved. Here, we showed that IR incompletely saturated with insulin predominantly forms an asymmetric conformation and exhibits partial activation. IR with one insulin bound adopts a Γ-shaped conformation. IR with two insulins bound assumes a Ƭ-shaped conformation. One insulin binds at site-1 and another simultaneously contacts both site-1 and site-2 in the Ƭ-shaped IR dimer. We further show that concurrent binding of four insulins to sites-1 and -2 prevents the formation of asymmetric IR and promotes the T-shaped symmetric, fully active state. Collectively, our results demonstrate how the synergistic binding of multiple insulins promotes optimal IR activation. | ||||||
History |
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Structure visualization
Structure viewer | Molecule: ![]() ![]() |
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Downloads & links
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Download
PDBx/mmCIF format | ![]() | 371 KB | Display | ![]() |
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PDB format | ![]() | 283.9 KB | Display | ![]() |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
Others | ![]() |
-Validation report
Summary document | ![]() | 730.4 KB | Display | ![]() |
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Full document | ![]() | 764.1 KB | Display | |
Data in XML | ![]() | 51.2 KB | Display | |
Data in CIF | ![]() | 78 KB | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 25431MC ![]() 7sl1C ![]() 7sl2C ![]() 7sl3C ![]() 7sl4C ![]() 7sl6C ![]() 7sl7C ![]() 7sthC ![]() 7stiC ![]() 7stjC C: citing same article ( M: map data used to model this data |
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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 | Mass: 155790.516 Da / Num. of mol.: 2 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() References: UniProt: P15208, receptor protein-tyrosine kinase #2: Protein | Mass: 11989.862 Da / Num. of mol.: 2 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() Has protein modification | Y | |
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-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: Full-length insulin receptor bound with unsaturated insulin WT (2 insulins bound) asymmetric conformation (Conformation 2) Type: COMPLEX / Entity ID: all / Source: RECOMBINANT |
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Molecular weight | Experimental value: NO |
Source (natural) | Organism: ![]() ![]() |
Source (recombinant) | Organism: ![]() |
Buffer solution | pH: 8 |
Specimen | Conc.: 6 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES |
Vitrification | Instrument: FEI VITROBOT MARK IV / Cryogen name: ETHANE / Humidity: 100 % |
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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: 2600 nm / Nominal defocus min: 1600 nm |
Image recording | Electron dose: 60 e/Å2 / Film or detector model: GATAN K3 BIOQUANTUM (6k x 4k) |
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Processing
EM software |
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CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||||||||||||||||||
Particle selection | Num. of particles selected: 2030596 | ||||||||||||||||||||||||||||||||||||||||
3D reconstruction | Resolution: 4 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 46052 / Symmetry type: POINT |