Biological Assembly 1  

 3D View: Structure | Electron Density | Ligand Interaction

Global Symmetry: Cyclic - C2  (3D View)
Global Stoichiometry: Homo 2-mer - A2 

Biological assembly 1 assigned by authors and generated by PISA (software)

Biological Assembly 2  

 3D View: Structure | Electron Density | Ligand Interaction

Global Symmetry: Cyclic - C2  (3D View)
Global Stoichiometry: Homo 4-mer - A4 

Biological assembly 2 generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 26.07 kDa 
• Atom Count: 1400 
• Residue Count: 168 
• Unique protein chains: 1

1RPY

CRYSTAL STRUCTURE OF THE DIMERIC SH2 DOMAIN OF APS

• DOI: 10.2210/pdb1RPY/pdb

• Classification: SIGNALING PROTEIN
• Organism(s): Rattus norvegicus
• Expression System: Escherichia coli
• Mutation(s): Yes 


• Deposited: 2003-12-03 Released: 2003-12-23 
• Deposition Author(s): Hu, J., Liu, J., Ghirlando, R., Saltiel, A.R., Hubbard, S.R.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.30 Å
• R-Value Free: 0.270 
• R-Value Work: 0.228 
• R-Value Observed: 0.228 

Literature

Structural basis for recruitment of the adaptor protein APS to the activated insulin receptor.

Hu, J., Liu, J., Ghirlando, R., Saltiel, A.R., Hubbard, S.R.

(2003) Mol Cell 12: 1379-1389

• PubMed: 14690593 
• DOI: 10.1016/s1097-2765(03)00487-8
• Primary Citation of Related Structures:  
  1RPY, 1RQQ


• PubMed Abstract: 
  

The adaptor protein APS is a substrate of the insulin receptor and couples receptor activation with phosphorylation of Cbl to facilitate glucose uptake. The interaction with the activated insulin receptor is mediated by the Src homology 2 (SH2) domain of APS. Here, we present the crystal structure of the APS SH2 domain in complex with the phosphorylated tyrosine kinase domain of the insulin receptor. The structure reveals a novel dimeric configuration of the APS SH2 domain, wherein the C-terminal half of each protomer is structurally divergent from conventional, monomeric SH2 domains. The APS SH2 dimer engages two kinase molecules, with pTyr-1158 of the kinase activation loop bound in the canonical phosphotyrosine binding pocket of the SH2 domain and a second phosphotyrosine, pTyr-1162, coordinated by two lysine residues in beta strand D. This structure provides a molecular visualization of one of the initial downstream recruitment events following insulin activation of its dimeric receptor.

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Organizational Affiliation: 

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

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
adaptor protein APS	A, B	114	Rattus norvegicus	Mutation(s): 1  Gene Names: Sh2b2, Aps
Find proteins for Q9Z200 (Rattus norvegicus) Explore Q9Z200  Go to UniProtKB:  Q9Z200

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
SO4	A, B	SULFATE ION O4 S QAOWNCQODCNURD-UHFFFAOYSA-L

Modified Residues  1 Unique
ID	Chains	Type	Formula	2D Diagram	Parent
MSE	A,B	L-PEPTIDE LINKING	C5 H11 N O2 Se		MET

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.30 Å
• R-Value Free: 0.270 
• R-Value Work: 0.228 
• R-Value Observed: 0.228 
• Space Group: P 3₁ 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 78.378	α = 90
b = 78.378	β = 90
c = 67.33	γ = 120

Software Package:

Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
SOLVE	phasing
RESOLVE	model building
CNS	refinement
RESOLVE	phasing

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2003-12-03 
• Released Date: 2003-12-23 
Deposition Author(s): Hu, J., Liu, J., Ghirlando, R., Saltiel, A.R., Hubbard, S.R.

Revision History 

• Version 1.0: 2003-12-23
  Type: Initial release
  
• Version 1.1: 2008-04-29
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance