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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 
 
 
 
 

The Wiskott-Aldrich syndrome protein-interacting protein (WIP) binds to the adaptor protein Nck.

Nck is a ubiquitous adaptor molecule composed of three Src homology 3 (SH3) domains followed by a single SH2 domain. Nck links, via its SH2 domain, tyrosine-phosphorylated receptors to effector proteins that contain SH3-binding proline-rich sequences. In this report, we demonstrate that recombinant Nck precipitates endogenous WIP, a novel proline-rich protein that interacts with the Wiskott-Aldrich syndrome protein (WASP), from BJAB cell lysates. Nck binds through its second SH3 domain to WIP, and Nck binds to WIP at a site (amino acids 321-415) that differs from the WASP-binding site (amino acids 416-488). WIP has been shown to associate with the actin polymerization regulatory protein profilin and to induce actin polymerization and cytoskeletal reorganization in lymphoid cells. We demonstrate the presence of profilin in Nck precipitates suggesting that Nck may couple extracellular signals to the cytoskeleton via its interaction with WIP and profilin.[1]

References

  1. The Wiskott-Aldrich syndrome protein-interacting protein (WIP) binds to the adaptor protein Nck. Antón, I.M., Lu, W., Mayer, B.J., Ramesh, N., Geha, R.S. J. Biol. Chem. (1998) [Pubmed]
 
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