8GUY

human insulin receptor bound with two insulin molecules


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 4.18 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Functional selectivity of insulin receptor revealed by aptamer-trapped receptor structures.

Kim, J.Yunn, N.O.Park, M.Kim, J.Park, S.Kim, Y.Noh, J.Ryu, S.H.Cho, Y.

(2022) Nat Commun 13: 6500-6500

  • DOI: https://doi.org/10.1038/s41467-022-34292-8
  • Primary Citation of Related Structures:  
    7YQ3, 7YQ4, 7YQ5, 7YQ6, 8GUY

  • PubMed 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 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.


  • Organizational Affiliation

    Department of Life Sciences, Pohang University of Science and Technology (POSTECH), Pohang, 37673, Republic of Korea.


Macromolecules
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Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Isoform Short of Insulin receptorA [auth E],
F
907Homo sapiensMutation(s): 3 
Gene Names: INSR
EC: 2.7.10.1
Membrane Entity: Yes 
UniProt & NIH Common Fund Data Resources
Find proteins for P06213 (Homo sapiens)
Explore P06213 
Go to UniProtKB:  P06213
PHAROS:  P06213
GTEx:  ENSG00000171105 
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UniProt GroupP06213
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  • Reference Sequence

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Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
Insulin A chainB [auth A],
D [auth C]
21Homo sapiensMutation(s): 0 
Gene Names: INS
Membrane Entity: Yes 
UniProt & NIH Common Fund Data Resources
Find proteins for P01308 (Homo sapiens)
Explore P01308 
Go to UniProtKB:  P01308
PHAROS:  P01308
GTEx:  ENSG00000254647 
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UniProt GroupP01308
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  • Reference Sequence

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Entity ID: 3
MoleculeChains Sequence LengthOrganismDetailsImage
Insulin, isoform 2C [auth B],
E [auth D]
25Homo sapiensMutation(s): 0 
Gene Names: INS-IGF2
UniProt & NIH Common Fund Data Resources
Find proteins for F8WCM5 (Homo sapiens)
Explore F8WCM5 
Go to UniProtKB:  F8WCM5
PHAROS:  F8WCM5
GTEx:  ENSG00000129965 
Entity Groups  
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UniProt GroupF8WCM5
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 4.18 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

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Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Research Foundation (NRF, Korea)Korea, Republic Of2017M3A9F6029736

Revision History  (Full details and data files)

  • Version 1.0: 2022-11-09
    Type: Initial release
  • Version 1.1: 2024-05-08
    Changes: Data collection, Database references