Macromolecule Content

• Total Structure Weight: 20375.51 
• Atom Count: 1430 
• Residue Count: 183 
• Unique protein chains: 3

1JU5

Ternary complex of an Crk SH2 domain, Crk-derived phophopeptide, and Abl SH3 domain by NMR spectroscopy

• DOI: 10.2210/pdb1JU5/pdb

• Classification: PROTEIN BINDING/TRANSFERASE
• Organism(s): Homo sapiens, Mus musculus
• Expression System: Escherichia coli BL21
• Mutation(s): 1 


• Deposited: 2001-08-23 Released: 2002-11-06 
• Deposition Author(s): Donaldson, L.W., Pawson, T., Kay, L.E., Forman-Kay, J.D.

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Experimental Data Snapshot

• Method: SOLUTION NMR
• Conformers Calculated: 40 
• Conformers Submitted: 1 
• Selection Criteria: structures with the lowest energy 

Literature

Structure of a regulatory complex involving the Abl SH3 domain, the Crk SH2 domain, and a Crk-derived phosphopeptide

Donaldson, L.W., Gish, G., Pawson, T., Kay, L.E., Forman-Kay, J.D.

(2002) Proc.Natl.Acad.Sci.USA 99: 14053-14058

• PubMed: 12384576 
• DOI: 10.1073/pnas.212518799


• PubMed Abstract: 
  

On phosphorylation of Y221 by Abelson (Abl) kinase, the Crk-II adapter protein undergoes an intramolecular reorganization initiated by the binding of its own Src homology 2 (SH2) domain to the pY221 site. Conformational changes induced by phosphotyrosine recognition promote the binding of the Src homology 3 (SH3) domain of the Abl tyrosine kinase to a proline-rich loop located between the betaD and betaE strands of the SH2 domain (DE loop). We have determined the NMR solution structure of the ternary complex of the Abl SH3 domain with the Crk SH2 domain bound to a Crk pY221 phosphopeptide. The SH2 domain bridges two ligands that bind at distinct sites. The interaction between the Abl SH3 domain and the Crk SH2 domain is localized to a canonical eight-residue site within the DE loop. From (15)N relaxation experiments, the DE loop of the SH2 domain in the complex displays a significant degree of conformational freedom. The structural and dynamic data therefore indicate that these SH2 and SH3 domains do not assume a unique orientation with respect to one another; rather, they appear to be only tethered via the DE loop. Thus, SH2 domain-SH3 domain interactions do not require additional tertiary contacts or restriction of domain orientation when a recognition motif is presented in a mobile loop. This complex between the Abl SH3 domain, Crk SH2 domain, and Crk phosphopeptide is an example of the extremely modular nature of regulatory proteins that provides a rich repertoire of mechanisms for control of biological function.

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Organizational Affiliation: 

Department of Molecular and Medical Genetics, University of Toronto, Toronto, ON, Canada M5S 1A8.

Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details
Crk	A	109	Homo sapiens	Mutation(s): 0  Gene Names: CRK
Find proteins for P46108 (Homo sapiens) Go to Gene View: CRK Go to UniProtKB:  P46108

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details
Crk	B	13	Mus musculus	Mutation(s): 0  Gene Names: Crk (Crko)
Find proteins for Q64010 (Mus musculus) Go to UniProtKB:  Q64010

Entity ID: 3
Molecule	Chains	Sequence Length	Organism	Details
Abl	C	61	Homo sapiens	Mutation(s): 1  Gene Names: ABL1 (ABL, JTK7) EC: 2.7.10.2
Find proteins for P00519 (Homo sapiens) Go to Gene View: ABL1 Go to UniProtKB:  P00519

Small Molecules

Modified Residues  1 Unique
ID	Chains	Type	Formula	2D Diagram	Parent
PTR	B	L-PEPTIDE LINKING	C9 H12 N O6 P		TYR

Experimental Data & Validation

Experimental Data

• Method: SOLUTION NMR
• Conformers Calculated: 40 
• Conformers Submitted: 1 
• Selection Criteria: structures with the lowest energy 

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2001-08-23 
• Released Date: 2002-11-06 
• Deposition Author(s): Donaldson, L.W., Pawson, T., Kay, L.E., Forman-Kay, J.D.

Revision History 

• Version 1.0: 2002-11-06
  Type: Initial release
• Version 1.1: 2008-04-27
  Type: Version format compliance
• Version 1.2: 2011-07-13
  Type: Version format compliance