1SPS

BINDING OF A HIGH AFFINITY PHOSPHOTYROSYL PEPTIDE TO THE SRC SH2 DOMAIN: CRYSTAL STRUCTURES OF THE COMPLEXED AND PEPTIDE-FREE FORMS


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.70 Å
  • R-Value Work: 0.180 
  • R-Value Observed: 0.180 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Binding of a high affinity phosphotyrosyl peptide to the Src SH2 domain: crystal structures of the complexed and peptide-free forms.

Waksman, G.Shoelson, S.E.Pant, N.Cowburn, D.Kuriyan, J.

(1993) Cell 72: 779-790

  • DOI: 10.1016/0092-8674(93)90405-f
  • Primary Citation of Related Structures:  
    1SPS, 1SPR

  • PubMed Abstract: 
  • The crystal structure of the Src SH2 domain complexed with a high affinity 11-residue phosphopeptide has been determined at 2.7 A resolution by X-ray diffraction. The peptide binds in an extended conformation and makes primary interactions with the SH2 domain at six central residues: PQ(pY)EEI ...

    The crystal structure of the Src SH2 domain complexed with a high affinity 11-residue phosphopeptide has been determined at 2.7 A resolution by X-ray diffraction. The peptide binds in an extended conformation and makes primary interactions with the SH2 domain at six central residues: PQ(pY)EEI. The phosphotyrosine and the isoleucine are tightly bound by two well-defined pockets on the protein surface, resulting in a complex that resembles a two-pronged plug engaging a two-holed socket. The glutamate residues are in solvent-exposed environments in the vicinity of basic side chains of the SH2 domain, and the two N-terminal residues cap the phosphotyrosine-binding site. The crystal structure of Src SH2 in the absence of peptide has been determined at 2.5 A resolution, and comparison with the structure of the high affinity complex reveals only localized and relatively small changes.


    Organizational Affiliation

    Rockefeller University, New York, New York 10021.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
SRC SH2 DOMAINA, C [auth B], E [auth C]104Rous sarcoma virusMutation(s): 0 
EC: 2.7.10.2
UniProt
Find proteins for P00524 (Avian leukosis virus RSA)
Explore P00524 
Go to UniProtKB:  P00524
Protein Feature View
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  • Reference Sequence
  • Find similar proteins by:  Sequence   |   Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
PEPTIDE YEEIB [auth D], D [auth E], F11Mesocricetus auratus polyomavirus 1Mutation(s): 0 
UniProt
Find proteins for P03079 (Hamster polyomavirus)
Explore P03079 
Go to UniProtKB:  P03079
Protein Feature View
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  • Reference Sequence
Small Molecules
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
PTR
Query on PTR
B [auth D], D [auth E], FL-PEPTIDE LINKINGC9 H12 N O6 PTYR
Binding Affinity Annotations 
IDSourceBinding Affinity
PTR BindingDB:  1SPS -TΔS: -1.81e+1 (kJ/mol) from 1 assay(s)
ΔG: -2.14e+1 (kJ/mol) from 1 assay(s)
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.70 Å
  • R-Value Work: 0.180 
  • R-Value Observed: 0.180 
  • Space Group: P 41
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 93.3α = 90
b = 93.3β = 90
c = 55γ = 90
Software Package:
Software NamePurpose
X-PLORmodel building
X-PLORrefinement
X-PLORphasing

Structure Validation

View Full Validation Report




Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 1994-05-31
    Type: Initial release
  • Version 1.1: 2008-03-27
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance