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: https://doi.org/10.1083/jcb.201907210
  • Primary Citation of Related Structures:  
    6SOF, 7QID

  • 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. While biochemistry predicts two distinct insulin binding sites, 1 and 2, recent structural analyses have resolved only site 1 ...

    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
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Insulin receptor
A, C
719Homo sapiensMutation(s): 0 
Gene Names: INSR
EC: 2.7.10.1
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Find proteins for P06213 (Homo sapiens)
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Go to UniProtKB:  P06213
PHAROS:  P06213
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UniProt GroupP06213
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Insulin receptor
B, D
162Homo sapiensMutation(s): 0 
Gene Names: INSR
EC: 2.7.10.1
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Find proteins for P06213 (Homo sapiens)
Explore P06213 
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PHAROS:  P06213
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
InsulinE [auth G],
G [auth E],
I [auth K],
K [auth I]		21Homo sapiensMutation(s): 0 
Gene Names: INS
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Find proteins for P01308 (Homo sapiens)
Explore P01308 
Go to UniProtKB:  P01308
PHAROS:  P01308
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UniProt GroupP01308
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Entity ID: 4
MoleculeChainsSequence LengthOrganismDetailsImage
InsulinF [auth H],
H [auth F],
J [auth L],
L [auth J]		30Homo sapiensMutation(s): 0 
Gene Names: INS
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Find proteins for P01308 (Homo sapiens)
Explore P01308 
Go to UniProtKB:  P01308
PHAROS:  P01308
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Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 4.30 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 
EM Software:
TaskSoftware PackageVersion
RECONSTRUCTIONRELION3.0
MODEL REFINEMENTPHENIX

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  (Full details and data files)

  • 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