Biological Assembly 1  

 3D View: Structure | Electron Density

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Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A 

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

Macromolecule Content

• Total Structure Weight: 9158.45 
• Atom Count: 663 
• Residue Count: 79 
• Unique protein chains: 2

4LN2

The second SH3 domain from CAP/Ponsin in complex with proline rich peptide from Vinculin

• DOI: 10.2210/pdb4LN2/pdb

• Classification: SIGNALING PROTEIN
• Organism(s): Homo sapiens
• Expression System: Escherichia coli


• Deposited: 2013-07-11 Released: 2014-05-28 
• Deposition Author(s): Zhao, D., Li, F., Wu, J., Shi, Y., Zhang, Z., Gong, Q.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1 Å
• R-Value Free: 0.152 
• R-Value Work: 0.139 

Literature

Structural investigation of the interaction between the tandem SH3 domains of c-Cbl-associated protein and vinculin

Zhao, D., Wang, X., Peng, J., Wang, C., Li, F., Sun, Q., Zhang, Y., Zhang, J., Cai, G., Zuo, X., Wu, J., Shi, Y., Zhang, Z., Gong, Q.

(2014) J.Struct.Biol. 187: 194-205

• PubMed: 24878663 
• DOI: 10.1016/j.jsb.2014.05.009
• Primary Citation of Related Structures:  
  4LNP, 2MOX


• PubMed Abstract: 
  

c-Cbl-associated protein (CAP) is an important cytoskeletal adaptor protein involved in the regulation of adhesion turnover. The interaction between CAP and vinculin is critical for the recruitment of CAP to focal adhesions. The tandem SH3 domains (herein termed SH3a and SH3b) of CAP are responsible for its interaction with vinculin. However, the structural mechanism underlying the interaction between CAP and vinculin is poorly understood. In this manuscript, we report the solution structure of the tandem SH3 domains of CAP. Our NMR and ITC data indicate that the SH3a and SH3b domains of CAP simultaneously bind to a long proline-rich region of vinculin with different binding specificities. Furthermore, the crystal structures of the individual SH3a and SH3b domains complexed with their substrate peptides indicate that Q807(SH3a) and D881(SH3b) are the critical residues determining the different binding specificities of the SH3 domains. Based on the obtained structural information, a model of the SH3ab-vinculin complex was generated using MD simulation and SAXS data.

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Organizational Affiliation: 

Hefei National Laboratory for Physical Sciences at Microscale and School of Life Sciences, University of Science and Technology of China, Hefei, Anhui 230026, People's Republic of China.

Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details
Sorbin and SH3 domain-containing protein 1	A	68	Homo sapiens	Mutation(s): 0  Gene Names: SORBS1 (KIAA0894, KIAA1296, SH3D5)
Find proteins for Q9BX66 (Homo sapiens) Go to Gene View: SORBS1 Go to UniProtKB:  Q9BX66

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details
proline rich peptide	B	11	Homo sapiens	Mutation(s): 0  Gene Names: VCL
Find proteins for P18206 (Homo sapiens) Go to Gene View: VCL Go to UniProtKB:  P18206

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1 Å
• R-Value Free: 0.152 
• R-Value Work: 0.139 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length (Å)	Angle (°)
a = 28.870	α = 90.00
b = 45.850	β = 90.00
c = 52.860	γ = 90.00

Software Package:

Software Name	Purpose
MOSFLM	data reduction
SCALA	data scaling
PHASES	phasing
REFMAC	refinement

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2013-07-11 
• Released Date: 2014-05-28 
• Deposition Author(s): Zhao, D., Li, F., Wu, J., Shi, Y., Zhang, Z., Gong, Q.

Revision History 

• Version 1.0: 2014-05-28
  Type: Initial release
• Version 1.1: 2014-06-04
  Type: Derived calculations
• Version 1.2: 2014-12-10
  Type: Database references