2AUG

Crystal structure of the Grb14 SH2 domain

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.30 Å
  • R-Value Free: 0.248 
  • R-Value Work: 0.199 

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This is version 1.2 of the entry. See complete history. 


Literature

Structural basis for inhibition of the insulin receptor by the adaptor protein grb14.

Depetris, R.S., Hu, J., Gimpelevich, I., Holt, L.J., Daly, R.J., Hubbard, S.R.

(2005) Mol Cell 20: 325-333

  • DOI: 10.1016/j.molcel.2005.09.001
  • Primary Citation of Related Structures:  
    2AUH, 2AUG

  • PubMed Abstract: 

    • Grb14, a member of the Grb7 adaptor protein family, possesses a pleckstrin homology (PH) domain, a C-terminal Src homology-2 (SH2) domain, and an intervening stretch of approximately 45 residues known as the BPS region, which is unique to this adaptor fa ...

    Grb14, a member of the Grb7 adaptor protein family, possesses a pleckstrin homology (PH) domain, a C-terminal Src homology-2 (SH2) domain, and an intervening stretch of approximately 45 residues known as the BPS region, which is unique to this adaptor family. Previous studies have demonstrated that Grb14 is a tissue-specific negative regulator of insulin receptor signaling and that inhibition is mediated by the BPS region. We have determined the crystal structure of the Grb14 BPS region in complex with the tyrosine kinase domain of the insulin receptor. The structure reveals that the N-terminal portion of the BPS region binds as a pseudosubstrate inhibitor in the substrate peptide binding groove of the kinase. Together with the crystal structure of the SH2 domain, we present a model for the interaction of Grb14 with the insulin receptor, which indicates how Grb14 functions as a selective protein inhibitor of insulin signaling.

    Organizational Affiliation: 

    Structural Biology Program, Skirball Institute of Biomolecular Medicine and Department of Pharmacology, New York University School of Medicine, New York, New York 10016, USA.



Macromolecules
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(by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Growth factor receptor-bound protein 14 A, B126Homo sapiensMutation(s): 0 
Gene Names: GRB14
Find proteins for Q14449 (Homo sapiens)
Explore Q14449 
Go to UniProtKB:  Q14449
NIH Common Fund Data Resources
PHAROS:  Q14449
GTEx:  ENSG00000115290
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.30 Å
  • R-Value Free: 0.248 
  • R-Value Work: 0.199 
  • Space Group: P 31 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 49.118α = 90
b = 49.118β = 90
c = 184.087γ = 120
Software Package:
Software NamePurpose
CNSrefinement
DENZOdata reduction
SCALEPACKdata scaling
AMoREphasing

Structure Validation

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Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2005-11-01
    Type: Initial release
  • Version 1.1: 2008-05-01
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance