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- PDB-7mqo: The insulin receptor ectodomain in complex with a venom hybrid in... -

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Basic information

Entry
Database: PDB / ID: 7mqo
TitleThe insulin receptor ectodomain in complex with a venom hybrid insulin analog - "head" region
Components
  • Insulin A chain
  • Insulin B chain
  • Isoform Short of Insulin receptor
KeywordsHORMONE / TOXIN / insulin / receptor / venom / cone snail
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 / insulin binding / adrenal gland development / cargo receptor activity / negative regulation of glycogen catabolic process / PTB domain binding / 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 / neuronal cell body membrane / positive regulation of respiratory burst / negative regulation of acute inflammatory response / Regulation of gene expression in beta cells / alpha-beta T cell activation / amyloid-beta clearance / insulin receptor substrate binding / regulation of embryonic development / positive regulation of receptor internalization / Synthesis, secretion, and deacylation of Ghrelin / positive regulation of dendritic spine maintenance / epidermis development / negative regulation of protein secretion / negative regulation of gluconeogenesis / positive regulation of glycogen biosynthetic process / fatty acid homeostasis / protein kinase activator activity / positive regulation of insulin receptor signaling pathway / Signal attenuation / FOXO-mediated transcription of oxidative stress, metabolic and neuronal genes / negative regulation of respiratory burst involved in inflammatory response / negative regulation of lipid catabolic process / positive regulation of lipid biosynthetic process / negative regulation of oxidative stress-induced intrinsic apoptotic signaling pathway / transport across blood-brain barrier / heart morphogenesis / regulation of protein localization to plasma membrane / nitric oxide-cGMP-mediated signaling / phosphatidylinositol 3-kinase binding / transport vesicle / positive regulation of nitric-oxide synthase activity / Insulin receptor recycling / COPI-mediated anterograde transport / negative regulation of reactive oxygen species biosynthetic process / positive regulation of brown fat cell differentiation / insulin-like growth factor receptor binding / 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 / dendrite membrane / receptor-mediated endocytosis / positive regulation of glycolytic process / endosome lumen / acute-phase response / positive regulation of cytokine production / positive regulation of long-term synaptic potentiation / positive regulation of D-glucose import across plasma membrane / positive regulation of protein secretion / insulin receptor binding / learning / positive regulation of cell differentiation / Regulation of insulin secretion / wound healing / hormone activity / receptor protein-tyrosine kinase / positive regulation of neuron projection development / negative regulation of protein catabolic process / regulation of synaptic plasticity / receptor internalization / caveola / positive regulation of protein localization to nucleus / Golgi lumen / cellular response to growth factor stimulus / male gonad development / vasodilation / cognition / glucose metabolic process / cellular response to insulin stimulus / memory / positive regulation of nitric oxide biosynthetic process / insulin receptor signaling pathway / late endosome / protein autophosphorylation / cell-cell signaling
Similarity search - Function
Hormone Receptor, Insulin-like Growth Factor Receptor 1; Chain A domain 2 / Hormone Receptor, Insulin-like Growth Factor Receptor 1; Chain A, domain 2 / 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. / Insulin / Insulin family / Insulin-like ...Hormone Receptor, Insulin-like Growth Factor Receptor 1; Chain A domain 2 / Hormone Receptor, Insulin-like Growth Factor Receptor 1; Chain A, domain 2 / 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. / 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 / 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 / Ribbon / 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 / Mainly Beta
Similarity search - Domain/homology
Insulin / Insulin receptor
Similarity search - Component
Biological speciesHomo sapiens (human)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.4 Å
AuthorsBlakely, A.D. / Xiong, X. / Kim, J.H. / Menting, J. / Schafer, I.B. / Schubert, H.L. / Agrawal, R. / Gutmann, T. / Delaine, C. / Zhang, Y. ...Blakely, A.D. / Xiong, X. / Kim, J.H. / Menting, J. / Schafer, I.B. / Schubert, H.L. / Agrawal, R. / Gutmann, T. / Delaine, C. / Zhang, Y. / Artik, G.O. / Merriman, A. / Eckert, D. / Lawrence, M.C. / Coskun, U. / Fisher, S.J. / Forbes, B.E. / Safavi-Hemami, H. / Hill, C.P. / Chou, D.H.C.
Funding support1items
OrganizationGrant numberCountry
Not funded
CitationJournal: Nat Chem Biol / Year: 2022
Title: Symmetric and asymmetric receptor conformation continuum induced by a new insulin.
Authors: Xiaochun Xiong / Alan Blakely / Jin Hwan Kim / John G Menting / Ingmar B Schäfer / Heidi L Schubert / Rahul Agrawal / Theresia Gutmann / Carlie Delaine / Yi Wolf Zhang / Gizem Olay Artik / ...Authors: Xiaochun Xiong / Alan Blakely / Jin Hwan Kim / John G Menting / Ingmar B Schäfer / Heidi L Schubert / Rahul Agrawal / Theresia Gutmann / Carlie Delaine / Yi Wolf Zhang / Gizem Olay Artik / Allanah Merriman / Debbie Eckert / Michael C Lawrence / Ünal Coskun / Simon J Fisher / Briony E Forbes / Helena Safavi-Hemami / Christopher P Hill / Danny Hung-Chieh Chou /
Abstract: Cone snail venoms contain a wide variety of bioactive peptides, including insulin-like molecules with distinct structural features, binding modes and biochemical properties. Here, we report an active ...Cone snail venoms contain a wide variety of bioactive peptides, including insulin-like molecules with distinct structural features, binding modes and biochemical properties. Here, we report an active humanized cone snail venom insulin with an elongated A chain and a truncated B chain, and use cryo-electron microscopy (cryo-EM) and protein engineering to elucidate its interactions with the human insulin receptor (IR) ectodomain. We reveal how an extended A chain can compensate for deletion of B-chain residues, which are essential for activity of human insulin but also compromise therapeutic utility by delaying dissolution from the site of subcutaneous injection. This finding suggests approaches to developing improved therapeutic insulins. Curiously, the receptor displays a continuum of conformations from the symmetric state to a highly asymmetric low-abundance structure that displays coordination of a single humanized venom insulin using elements from both of the previously characterized site 1 and site 2 interactions.
History
DepositionMay 6, 2021Deposition site: RCSB / Processing site: RCSB
Revision 1.0Mar 16, 2022Provider: repository / Type: Initial release
Revision 1.1Mar 29, 2023Group: 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 1.2Nov 13, 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 / _pdbx_entry_details.has_protein_modification

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Structure visualization

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  • Deposited structure unit
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  • EMDB-23949
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Structure viewerMolecule:
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Assembly

Deposited unit
A: Insulin A chain
B: Insulin B chain
F: Isoform Short of Insulin receptor
E: Isoform Short of Insulin receptor
C: Insulin A chain
D: Insulin B chain
hetero molecules


Theoretical massNumber of molelcules
Total (without water)223,57520
Polymers220,0726
Non-polymers3,50314
Water00
1


  • Idetical with deposited unit
  • defined by author
TypeNameSymmetry operationNumber
identity operation1_5551
Noncrystallographic symmetry (NCS)NCS domain:
IDEns-IDDetails
d_1ens_1chain "C"
d_2ens_1chain "A"
d_1ens_2chain "B"
d_2ens_2chain "D"
d_1ens_3chain "E"
d_2ens_3chain "F"

NCS domain segments:
Dom-IDComponent-IDEns-IDBeg label comp-IDEnd label comp-IDLabel asym-IDLabel seq-ID
d_11ens_1GLYGLNL1 - 24
d_21ens_1GLYGLNA1 - 24
d_11ens_2ASNLEUB1 - 18
d_21ens_2ASNLEUM1 - 18
d_11ens_3HISPRON1 - 602
d_12ens_3NAGNAGO
d_13ens_3NAGNAGP
d_14ens_3NAGNAGQ
d_15ens_3NAGNAGR
d_16ens_3NAGNAGS
d_17ens_3NAGNAGT
d_18ens_3NAGNAGL
d_19ens_3NAGNAGM
d_21ens_3HISPROC1 - 602
d_22ens_3NAGNAGD
d_23ens_3NAGNAGE
d_24ens_3NAGNAGF
d_25ens_3NAGNAGG
d_26ens_3NAGNAGH
d_27ens_3NAGNAGI
d_28ens_3NAGNAGJ
d_29ens_3NAGNAGK

NCS ensembles :
ID
ens_1
ens_2
ens_3

NCS oper:
IDCodeMatrixVector
1given(-0.997583535614, 0.00445283027458, 0.0693344198338), (-0.0059423594723, -0.999755642977, -0.0212918458332), (0.0692226685057, -0.0216524048925, 0.99736622939)337.14502552, 353.758234664, -7.67321881745
2given(-0.99792011568, -0.0202672460347, 0.0611938024643), (0.0196923076712, -0.9997562372, -0.0099839470703), (0.0613812328033, -0.00875813442963, 0.998075968722)343.091604385, 347.596943578, -8.83770725337
3given(-0.999999364521, -0.00110340647425, 0.00023119639214), (0.00110301306376, -0.999997955332, -0.00169490246522), (0.000233066085774, -0.00169464637551, 0.999998536926)349.595269374, 349.504675231, 0.182626577763

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Components

#1: Protein/peptide Insulin A chain


Mass: 2736.106 Da / Num. of mol.: 2 / Mutation: N21H / Source method: obtained synthetically / Source: (synth.) Homo sapiens (human) / References: UniProt: P01308
#2: Protein/peptide Insulin B chain


Mass: 2537.951 Da / Num. of mol.: 2 / Mutation: H10E, G20L / Source method: obtained synthetically / Source: (synth.) Homo sapiens (human) / References: UniProt: P01308
#3: Protein Isoform Short of Insulin receptor / IR


Mass: 104761.875 Da / Num. of mol.: 2 / Fragment: Ectodomain, UNP residues 28-944
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
#4: Polysaccharide 2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose


Type: oligosaccharide / Mass: 424.401 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
DescriptorTypeProgram
DGlcpNAcb1-4DGlcpNAcb1-ROHGlycam Condensed SequenceGMML 1.0
WURCS=2.0/1,2,1/[a2122h-1b_1-5_2*NCC/3=O]/1-1/a4-b1WURCSPDB2Glycan 1.1.0
[][D-1-deoxy-GlcpNAc]{[(4+1)][b-D-GlcpNAc]{}}LINUCSPDB-CARE
#5: Sugar
ChemComp-NAG / 2-acetamido-2-deoxy-beta-D-glucopyranose / N-acetyl-beta-D-glucosamine / 2-acetamido-2-deoxy-beta-D-glucose / 2-acetamido-2-deoxy-D-glucose / 2-acetamido-2-deoxy-glucose / N-ACETYL-D-GLUCOSAMINE


Type: D-saccharide, beta linking / Mass: 221.208 Da / Num. of mol.: 12 / Source method: obtained synthetically / Formula: C8H15NO6
IdentifierTypeProgram
DGlcpNAcbCONDENSED IUPAC CARBOHYDRATE SYMBOLGMML 1.0
N-acetyl-b-D-glucopyranosamineCOMMON NAMEGMML 1.0
b-D-GlcpNAcIUPAC CARBOHYDRATE SYMBOLPDB-CARE 1.0
GlcNAcSNFG CARBOHYDRATE SYMBOLGMML 1.0
Has ligand of interestN
Has protein modificationY
Sequence detailsElongated Insulin chain A was modified to contain three additional C-terminal residues (SQL)

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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 ectodomain in complex with insulin analog Vh-Ins-HSLQ - focused refinement.
Type: COMPLEX / Entity ID: #1-#3 / Source: MULTIPLE SOURCES
Molecular weightValue: 0.209 MDa / Experimental value: NO
Source (natural)Organism: Homo sapiens (human)
Buffer solutionpH: 8
Details: Equal parts HBS( 50 mM HEPES pH 7.5, 150 mM NaCl ) and TBS (25 mM Tris pH 8.5, 150 mM NaCl)
Buffer component
IDNameBuffer-ID
1HEPES1
2Tris1
SpecimenEmbedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
Specimen supportGrid type: Quantifoil R1.2/1.3
VitrificationInstrument: FEI VITROBOT MARK II / Cryogen name: ETHANE / Humidity: 80 % / Chamber temperature: 277 K

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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
Image recordingElectron dose: 40 e/Å2 / Detector mode: COUNTING / Film or detector model: GATAN K2 SUMMIT (4k x 4k)

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Processing

SoftwareName: PHENIX / Version: 1.19.1_4122: / Classification: refinement
EM software
IDNameVersionCategoryDetails
4cryoSPARC2.15CTF correction
7Cootmodel fitting
9PHENIXmodel refinement
10cryoSPARC3.2initial Euler assignment
11cryoSPARC3.2final Euler assignmentNon-uniform refinement
13cryoSPARC3.23D reconstructionNon-uniform refinement
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
SymmetryPoint symmetry: C2 (2 fold cyclic)
3D reconstructionResolution: 3.4 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 163114 / Symmetry type: POINT
RefinementCross valid method: NONE
Stereochemistry target values: GeoStd + Monomer Library + CDL v1.2
Displacement parametersBiso mean: 26.56 Å2
Refine LS restraints
Refine-IDTypeDev idealNumber
ELECTRON MICROSCOPYf_bond_d0.00410884
ELECTRON MICROSCOPYf_angle_d0.65114742
ELECTRON MICROSCOPYf_dihedral_angle_d5.7221496
ELECTRON MICROSCOPYf_chiral_restr0.0481662
ELECTRON MICROSCOPYf_plane_restr0.0051874
Refine LS restraints NCS
Ens-IDDom-IDAuth asym-IDRefine-IDTypeRms dev position (Å)
ens_1d_2AELECTRON MICROSCOPYNCS constraints0.000708787151027
ens_2d_2BELECTRON MICROSCOPYNCS constraints0.000715555249684
ens_3d_2CELECTRON MICROSCOPYNCS constraints0.000704645307887

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