5KQV

Insulin receptor ectodomain construct comprising domains L1,CR,L2, FnIII-1 and alphaCT peptide in complex with bovine insulin and FAB 83-14 (REVISED STRUCTURE)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 4.40 Å
  • R-Value Free: 0.266 
  • R-Value Work: 0.229 
  • R-Value Observed: 0.231 

wwPDB Validation   3D Report Full Report


This is version 2.1 of the entry. See complete history


Literature

How insulin engages its primary binding site on the insulin receptor.

Menting, J.G.Whittaker, J.Margetts, M.B.Whittaker, L.J.Kong, G.K.Smith, B.J.Watson, C.J.Zakova, L.Kletvikova, E.Jiracek, J.Chan, S.J.Steiner, D.F.Dodson, G.G.Brzozowski, A.M.Weiss, M.A.Ward, C.W.Lawrence, M.C.

(2013) Nature 493: 241-245

  • DOI: https://doi.org/10.1038/nature11781
  • Primary Citation of Related Structures:  
    3W11, 3W12, 3W13, 5KQV

  • PubMed Abstract: 

    Insulin receptor signalling has a central role in mammalian biology, regulating cellular metabolism, growth, division, differentiation and survival. Insulin resistance contributes to the pathogenesis of type 2 diabetes mellitus and the onset of Alzheimer's disease; aberrant signalling occurs in diverse cancers, exacerbated by cross-talk with the homologous type 1 insulin-like growth factor receptor (IGF1R). Despite more than three decades of investigation, the three-dimensional structure of the insulin-insulin receptor complex has proved elusive, confounded by the complexity of producing the receptor protein. Here we present the first view, to our knowledge, of the interaction of insulin with its primary binding site on the insulin receptor, on the basis of four crystal structures of insulin bound to truncated insulin receptor constructs. The direct interaction of insulin with the first leucine-rich-repeat domain (L1) of insulin receptor is seen to be sparse, the hormone instead engaging the insulin receptor carboxy-terminal α-chain (αCT) segment, which is itself remodelled on the face of L1 upon insulin binding. Contact between insulin and L1 is restricted to insulin B-chain residues. The αCT segment displaces the B-chain C-terminal β-strand away from the hormone core, revealing the mechanism of a long-proposed conformational switch in insulin upon receptor engagement. This mode of hormone-receptor recognition is novel within the broader family of receptor tyrosine kinases. We support these findings by photo-crosslinking data that place the suggested interactions into the context of the holoreceptor and by isothermal titration calorimetry data that dissect the hormone-insulin receptor interface. Together, our findings provide an explanation for a wealth of biochemical data from the insulin receptor and IGF1R systems relevant to the design of therapeutic insulin analogues.


  • Organizational Affiliation

    Walter and Eliza Hall Institute of Medical Research, 1G Royal Parade, Parkville, Victoria 3052, Australia.


Macromolecules

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Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
InsulinA,
G [auth I]
21Bos taurusMutation(s): 0 
UniProt
Find proteins for P01317 (Bos taurus)
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Go to UniProtKB:  P01317
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UniProt GroupP01317
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Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
InsulinB,
H [auth J]
30Bos taurusMutation(s): 0 
UniProt
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Entity ID: 3
MoleculeChains Sequence LengthOrganismDetailsImage
MONOCLONAL ANTIBODY FAB 83-14 - HEAVY CHAINC,
I [auth P]
220Mus musculusMutation(s): 0 
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Entity ID: 4
MoleculeChains Sequence LengthOrganismDetailsImage
MONOCLONAL ANTIBODY FAB 83-14 - LIGHT CHAIND,
J [auth Q]
214Mus musculusMutation(s): 0 
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Entity ID: 5
MoleculeChains Sequence LengthOrganismDetailsImage
Insulin receptor,Insulin receptor
E, F
609Homo sapiensMutation(s): 1 
Gene Names: INSR
EC: 2.7.10.1
UniProt & NIH Common Fund Data Resources
Find proteins for P06213 (Homo sapiens)
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Go to UniProtKB:  P06213
PHAROS:  P06213
GTEx:  ENSG00000171105 
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Oligosaccharides

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Entity ID: 6
MoleculeChains Length2D Diagram Glycosylation3D Interactions
alpha-L-fucopyranose-(1-6)-2-acetamido-2-deoxy-beta-D-glucopyranoseK [auth G],
L [auth H]
2N-Glycosylation
Glycosylation Resources
GlyTouCan:  G86851RC
GlyCosmos:  G86851RC
GlyGen:  G86851RC
Entity ID: 7
MoleculeChains Length2D Diagram Glycosylation3D Interactions
2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-[alpha-L-fucopyranose-(1-6)]2-acetamido-2-deoxy-beta-D-glucopyranoseM [auth K]3N-Glycosylation
Glycosylation Resources
GlyTouCan:  G21290RB
GlyCosmos:  G21290RB
GlyGen:  G21290RB
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 4.40 Å
  • R-Value Free: 0.266 
  • R-Value Work: 0.229 
  • R-Value Observed: 0.231 
  • Space Group: I 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 118.15α = 90
b = 140.1β = 95.04
c = 190.022γ = 90
Software Package:
Software NamePurpose
BUSTERrefinement
XDSdata reduction
XSCALEdata scaling
PHASERphasing

Structure Validation

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Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Health and Medical Research Council (NHMRC, Australia)Australia1005896

Revision History  (Full details and data files)

  • Version 1.0: 2017-07-19
    Type: Initial release
  • Version 1.1: 2017-09-06
    Changes: Author supporting evidence
  • Version 1.2: 2020-01-08
    Changes: Author supporting evidence, Data collection
  • Version 2.0: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Atomic model, Data collection, Derived calculations, Structure summary
  • Version 2.1: 2023-10-04
    Changes: Data collection, Database references, Derived calculations, Refinement description, Structure summary