6SOF

human insulin receptor ectodomain bound by 4 insulin


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 4.30 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Cryo-EM structure of the complete and ligand-saturated insulin receptor ectodomain.

Gutmann, T.Schafer, I.B.Poojari, C.Brankatschk, B.Vattulainen, I.Strauss, M.Coskun, U.

(2020) J Cell Biol 219

  • DOI: 10.1083/jcb.201907210
  • Primary Citation of Related Structures:  
    6SOF

  • PubMed Abstract: 
  • Glucose homeostasis and growth essentially depend on the hormone insulin engaging its receptor. Despite biochemical and structural advances, a fundamental contradiction has persisted in the current understanding of insulin ligand-receptor interactions. W ...

    Glucose homeostasis and growth essentially depend on the hormone insulin engaging its receptor. Despite biochemical and structural advances, a fundamental contradiction has persisted in the current understanding of insulin ligand-receptor interactions. While biochemistry predicts two distinct insulin binding sites, 1 and 2, recent structural analyses have resolved only site 1. Using a combined approach of cryo-EM and atomistic molecular dynamics simulation, we present the structure of the entire dimeric insulin receptor ectodomain saturated with four insulin molecules. Complementing the previously described insulin-site 1 interaction, we present the first view of insulin bound to the discrete insulin receptor site 2. Insulin binding stabilizes the receptor ectodomain in a T-shaped conformation wherein the membrane-proximal domains converge and contact each other. These findings expand the current models of insulin binding to its receptor and of its regulation. In summary, we provide the structural basis for a comprehensive description of ligand-receptor interactions that ultimately will inform new approaches to structure-based drug design.


    Related Citations: 
    • Cryo-EM structure of the complete and ligand-saturated insulin receptor ectodomain
      Gutmann, T., Schafer, I.B., Poojari, C., Brankatschk, B., Vattulainen, I., Strauss, M., Coskun, U.
      (2019) Biorxiv --: --

    Organizational Affiliation

    German Center for Diabetes Research, Neuherberg, Germany.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Insulin receptor AC719Homo sapiensMutation(s): 0 
Gene Names: INSR
EC: 2.7.10.1
Find proteins for P06213 (Homo sapiens)
Explore P06213 
Go to UniProtKB:  P06213
NIH Common Fund Data Resources
PHAROS:  P06213
Protein Feature View
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  • Reference Sequence
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Insulin receptor BD162Homo sapiensMutation(s): 0 
Gene Names: INSR
EC: 2.7.10.1
Find proteins for P06213 (Homo sapiens)
Explore P06213 
Go to UniProtKB:  P06213
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PHAROS:  P06213
Protein Feature View
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  • Reference Sequence
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
Insulin EGIK21Homo sapiensMutation(s): 0 
Gene Names: INS
Find proteins for P01308 (Homo sapiens)
Explore P01308 
Go to UniProtKB:  P01308
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PHAROS:  P01308
Protein Feature View
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  • Reference Sequence
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Entity ID: 4
MoleculeChainsSequence LengthOrganismDetailsImage
Insulin FHJL30Homo sapiensMutation(s): 0 
Gene Names: INS
Find proteins for P01308 (Homo sapiens)
Explore P01308 
Go to UniProtKB:  P01308
NIH Common Fund Data Resources
PHAROS:  P01308
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 4.30 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

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Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
German Research FoundationGermany251981924TRR83
German Research FoundationGermany347368302 FOR2682
European Research CouncilFinlandCROWDED-PRO-LIPIDS
Academy of FinlandFinland--

Revision History 

  • Version 1.0: 2019-11-13
    Type: Initial release
  • Version 1.1: 2019-11-20
    Changes: Database references, Structure summary
  • Version 1.2: 2020-05-27
    Changes: Database references