6HN5

Leucine-zippered human insulin receptor ectodomain with single bound insulin - "upper" membrane-distal part


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.20 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation   3D Report Full Report



Literature

The signalling conformation of the insulin receptor ectodomain.

Weis, F.Menting, J.G.Margetts, M.B.Chan, S.J.Xu, Y.Tennagels, N.Wohlfart, P.Langer, T.Muller, C.W.Dreyer, M.K.Lawrence, M.C.

(2018) Nat Commun 9: 4420-4420

  • DOI: 10.1038/s41467-018-06826-6
  • Primary Citation of Related Structures:  
    6HN5, 6HN4

  • PubMed Abstract: 
  • Understanding the structural biology of the insulin receptor and how it signals is of key importance in the development of insulin analogs to treat diabetes. We report here a cryo-electron microscopy structure of a single insulin bound to a physiological ...

    Understanding the structural biology of the insulin receptor and how it signals is of key importance in the development of insulin analogs to treat diabetes. We report here a cryo-electron microscopy structure of a single insulin bound to a physiologically relevant, high-affinity version of the receptor ectodomain, the latter generated through attachment of C-terminal leucine zipper elements to overcome the conformational flexibility associated with ectodomain truncation. The resolution of the cryo-electron microscopy maps is 3.2 Å in the insulin-binding region and 4.2 Å in the membrane-proximal region. The structure reveals how the membrane proximal domains of the receptor come together to effect signalling and how insulin's negative cooperativity of binding likely arises. Our structure further provides insight into the high affinity of certain super-mitogenic insulins. Together, these findings provide a new platform for insulin analog investigation and design.


    Organizational Affiliation

    Department of Medical Biology, University of Melbourne, Royal Parade, Parkville, Victoria, 3050, Australia. lawrence@wehi.edu.au.



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Insulin A21Homo 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
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Insulin B30Homo 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: 3
MoleculeChainsSequence LengthOrganismDetailsImage
Insulin receptor,General control protein GCN4 EF930Homo sapiensSaccharomyces cerevisiae S288CMutation(s): 7 
Gene Names: INSRGCN4AAS3ARG9YEL009C
EC: 2.7.10.1
Find proteins for P03069 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Explore P03069 
Go to UniProtKB:  P03069
Find proteins for P06213 (Homo sapiens)
Explore P06213 
Go to UniProtKB:  P06213
NIH Common Fund Data Resources
PHAROS:  P06213
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  • Reference Sequence
Oligosaccharides

Help

Entity ID: 4
MoleculeChainsChain Length2D Diagram Glycosylation3D Interactions
2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose
C
2 N-Glycosylation Oligosaccharides Interaction
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.20 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

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Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Health and Medical Research Council (Australia)AustraliaAPP1099595
National Health and Medical Research Council (Australia)AustraliaAPP1128553
National Institutes of Health/National Institute of Diabetes and Digestive and Kidney DiseaseUnited StatesDK013914
National Institutes of Health/National Institute of Diabetes and Digestive and Kidney DiseaseUnited StatesUC DRTC DK020595

Revision History 

  • Version 1.0: 2018-11-21
    Type: Initial release
  • Version 1.1: 2019-11-06
    Changes: Data collection, Refinement description
  • Version 1.2: 2019-12-11
    Changes: Other
  • Version 2.0: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Atomic model, Data collection, Derived calculations, Structure summary