2ci9
From Proteopedia
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NCK1 SH2-DOMAIN IN COMPLEX WITH A DODECAPHOSPHOPEPTIDE FROM EPEC PROTEIN TIR
Contents |
Overview
Nck proteins are essential Src homology (SH) 2 and SH3 domain-bearing, adapters that modulate actin cytoskeleton dynamics by linking proline-rich, effector molecules to tyrosine kinases or phosphorylated signaling, intermediates. Two mammalian pathogens, enteropathogenic Escherichia coli, and vaccinia virus, exploit Nck as part of their infection strategy., Conflicting data indicate potential differences in the recognition, specificities of the SH2 domains of the isoproteins Nck1 (Nckalpha) and, Nck2 (Nckbeta and Grb4). We have characterized the binding specificities, of both SH2 domains and find them to be essentially indistinguishable., Crystal structures of both domains in complex with phosphopeptides derived, from the enteropathogenic E. coli protein Tir concur in identifying highly, conserved, specific recognition of the phosphopeptide. Differential, peptide recognition can therefore not account for the preference of either, Nck in particular signaling pathways. Binding studies using sequentially, mutated, high affinity phosphopeptides establish the sequence variability, tolerated in peptide recognition. Based on this binding motif, we identify, potential new binding partners of Nck1 and Nck2 and confirm this, experimentally for the Arf-GAP GIT1.
Disease
Known disease associated with this structure: Pigmentation of skin, variation in OMIM:[609802]
About this Structure
2CI9 is a Protein complex structure of sequences from Homo sapiens. Full crystallographic information is available from OCA.
Reference
The phosphotyrosine peptide binding specificity of Nck1 and Nck2 Src homology 2 domains., Frese S, Schubert WD, Findeis AC, Marquardt T, Roske YS, Stradal TE, Heinz DW, J Biol Chem. 2006 Jun 30;281(26):18236-45. Epub 2006 Apr 24. PMID:16636066
Page seeded by OCA on Mon Nov 12 21:15:41 2007
