Macromolecule Content

• Total Structure Weight: 8.42 kDa 
• Atom Count: 545 
• Modelled Residue Count: 68 
• Deposited Residue Count: 76 
• Unique protein chains: 2

1QWF

C-SRC SH3 DOMAIN COMPLEXED WITH LIGAND VSL12

• DOI: 10.2210/pdb1QWF/pdb

• Classification: COMPLEX (SIGNAL TRANSDUCTION/PEPTIDE)
• Organism(s): Avian sarcoma virus
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 1995-11-09 Released: 1996-03-08 
• Deposition Author(s): Feng, S., Chiyoshi, K., Rickles, R.J., Schreiber, S.L.

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Experimental Data Snapshot

• Method: SOLUTION NMR
• Conformers Submitted: 1 

Literature

Specific interactions outside the proline-rich core of two classes of Src homology 3 ligands.

Feng, S., Kasahara, C., Rickles, R.J., Schreiber, S.L.

(1995) Proc Natl Acad Sci U S A 92: 12408-12415

• PubMed: 8618911 
• DOI: 10.1073/pnas.92.26.12408
• Primary Citation of Related Structures:  
  1QWF, 1QWE


• PubMed Abstract: 
  

Two dodecapeptides belonging to distinct classes of Src homology 3 (SH3) ligands and selected from biased phage display libraries were used to investigate interactions between a specificity pocket in the Src SH3 domain and ligant residues flanking the proline-rich core. The solution structures of c-Src SH3 complexed with these peptides were solved by NMR. In addition to proline-rich, polyproline type II helix-forming core, the class I and II ligands each possesses a flanking sequence that occupies a large pocket between the RT and n-Src loops of the SH3 domain. Structural and mutational analyses illustrate how the two classes of SH3 ligands exploit a specificity pocket on the receptor differently to increase binding affinity and specificity.

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Related Citations: 

• Structural Basis for the Binding of Proline-Rich Peptides to SH3 Domains
  Yu, H., Chen, J.K., Feng, S., Dalgarno, D.C., Brauer, A.W., Schreiber, S.L.
  (1994) Cell 76: 933

• Two Binding Orientations for Peptides to the Src SH3 Domain: Development of a General Model for SH3-Ligand Interactions
  Feng, S., Chen, J.K., Yu, H., Simon, J.A., Schreiber, S.L.
  (1994) Science 266: 1241

• Solution Structure of the SH3 Domain of Src and Identification of its Ligand-Binding Site
  Yu, H., Rosen, M.K., Shin, T.B., Seidel-Dugan, C., Brugge, J.S., Schreiber, S.L.
  (1992) Science 258: 1665

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Organizational Affiliation: 

Howard Hughes Medical Institute, Department of Chemistry, Harvard University, Cambridge, MA 02138, USA.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
TYROSINE-PROTEIN KINASE TRANSFORMING PROTEIN SRC	A	64	Avian sarcoma virus	Mutation(s): 0  Gene Names: CHICKEN EC: 2.7.1.112 (PDB Primary Data), 2.7.10.2 (UniProt)
UniProt
Find proteins for P00525 (Avian sarcoma virus (strain rASV1441)) Explore P00525  Go to UniProtKB:  P00525

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
VAL-SER-LEU-ALA-ARG-ARG-PRO-LEU-PRO-PRO-LEU-PRO	B	12	N/A	Mutation(s): 0

Experimental Data & Validation

Experimental Data

• Method: SOLUTION NMR
• Conformers Submitted: 1 
• OLDERADO: 1QWF Olderado

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 1995-11-09 
• Released Date: 1996-03-08 
Deposition Author(s): Feng, S., Chiyoshi, K., Rickles, R.J., Schreiber, S.L.

Revision History  

• Version 1.0: 1996-03-08
  Type: Initial release
  
• Version 1.1: 2008-03-24
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance