5U1M

Structure of the IRS-1 PTB Domain Bound to the Juxtamembrane Region of the Insulin Receptor

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.80 Å

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Literature

Domain-dependent effects of insulin and IGF-1 receptors on signalling and gene expression.

Cai, W., Sakaguchi, M., Kleinridders, A., Gonzalez-Del Pino, G., Dreyfuss, J.M., O'Neill, B.T., Ramirez, A.K., Pan, H., Winnay, J.N., Boucher, J., Eck, M.J., Kahn, C.R.

(2017) Nat Commun 8: 14892-14892

  • DOI: 10.1038/ncomms14892
  • Primary Citation of Related Structures:  
    5U1M

  • PubMed Abstract: 

    • Despite a high degree of homology, insulin receptor (IR) and IGF-1 receptor (IGF1R) mediate distinct cellular and physiological functions. Here, we demonstrate how domain differences between IR and IGF1R contribute to the distinct functions of these ...

    Despite a high degree of homology, insulin receptor (IR) and IGF-1 receptor (IGF1R) mediate distinct cellular and physiological functions. Here, we demonstrate how domain differences between IR and IGF1R contribute to the distinct functions of these receptors using chimeric and site-mutated receptors. Receptors with the intracellular domain of IGF1R show increased activation of Shc and Gab-1 and more potent regulation of genes involved in proliferation, corresponding to their higher mitogenic activity. Conversely, receptors with the intracellular domain of IR display higher IRS-1 phosphorylation, stronger regulation of genes in metabolic pathways and more dramatic glycolytic responses to hormonal stimulation. Strikingly, replacement of leucine 973 in the juxtamembrane region of IR to phenylalanine, which is present in IGF1R, mimics many of these signalling and gene expression responses. Overall, we show that the distinct activities of the closely related IR and IGF1R are mediated by their intracellular juxtamembrane region and substrate binding to this region.

    Organizational Affiliation: 

    Department of Medicine, Harvard Medical School, Boston, Massachusetts 02215, USA.



Macromolecules
Find similar proteins by: 
(by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Insulin receptor substrate 1A105Homo sapiensMutation(s): 0 
Gene Names: IRS1
Find proteins for P35568 (Homo sapiens)
Explore P35568 
Go to UniProtKB:  P35568
NIH Common Fund Data Resources
PHAROS  P35568
GTEx  ENSG00000169047
Protein Feature View
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  • Reference Sequence
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Insulin receptorB10Homo sapiensMutation(s): 1 
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
GTEx  ENSG00000171105
Protein Feature View
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  • Reference Sequence
Small Molecules
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
PTR
Query on PTR		BL-PEPTIDE LINKINGC9 H12 N O6 PTYR
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.80 Å
  • Space Group: P 4 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 68.37α = 90
b = 68.37β = 90
c = 57.52γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
PDB_EXTRACTdata extraction
XDSdata reduction
XSCALEdata scaling
MLPHAREphasing

Structure Validation

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Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2017-09-13
    Type: Initial release