2IUG

Crystal structure of the PI3-kinase p85 N-terminal SH2 domain


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.89 Å
  • R-Value Free: 0.289 
  • R-Value Work: 0.192 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Crystal Structure of the Pi 3-Kinase P85 Amino-Terminal Sh2 Domain and its Phosphopeptide Complexes

Nolte, R.T.Eck, M.J.Schlessinger, J.Shoelson, S.E.Harrison, S.C.

(1996) Nat.Struct.Mol.Biol. 3: 364

  • Primary Citation of Related Structures:  2IUH, 2IUI

  • PubMed Abstract: 
  • Crystal structures of the amino-terminal SH2 domain of the p85alpha subunit of phosphatidylinositol (PI) 3-kinase, alone and in complex with phosphopeptides bearing pTyr-Met/Val-Xaa-Met motifs, show that phosphopeptides bind in the two-pronged manner ...

    Crystal structures of the amino-terminal SH2 domain of the p85alpha subunit of phosphatidylinositol (PI) 3-kinase, alone and in complex with phosphopeptides bearing pTyr-Met/Val-Xaa-Met motifs, show that phosphopeptides bind in the two-pronged manner seen in high-affinity Lck and Src SH2 complexes, with conserved interactions between the domain and the peptide segment from phosphotyrosine to Met+3. Peptide binding requires the rearrangement of a tyrosyl side chain in the BG loop to create the hydrophobic Met+3 binding pocket. The structures suggest a mechanism for the biological specificity exhibited by PI 3-kinase in its interactions with phosphoprotein partners.


    Organizational Affiliation

    Howard Hughes Medical Institute and Laboratory of Molecular Medicine, Children's Hospital, Boston, Massachusetts 02115, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
PHOSPHATIDYLINOSITOL 3-KINASE REGULATORY ALPHA SUBUNIT
A
120Homo sapiensGene Names: PIK3R1 (GRB1)
Find proteins for P27986 (Homo sapiens)
Go to Gene View: PIK3R1
Go to UniProtKB:  P27986
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.89 Å
  • R-Value Free: 0.289 
  • R-Value Work: 0.192 
  • Space Group: P 41 21 2
Unit Cell:
Length (Å)Angle (°)
a = 57.120α = 90.00
b = 57.120β = 90.00
c = 112.100γ = 90.00
Software Package:
Software NamePurpose
X-PLORrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2006-06-06
    Type: Initial release
  • Version 1.1: 2011-05-08
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance