Download MendeleyHigh-resolution crystal structures of tyrosine kinase SH3 domains complexed with proline-rich peptides.
Musacchio, A., Saraste, M., Wilmanns, M.(1994) Nat Struct Biol 1: 546-551
- PubMed: 7664083
- DOI: https://doi.org/10.1038/nsb0894-546
- Primary Citation of Related Structures:
1ABO, 1ABQ, 1FYN - PubMed Abstract:
Src-homology 3 (SH3) domains bind to proline-rich motifs in target proteins. We have determined high-resolution crystal structures of the complexes between the SH3 domains of Abl and Fyn tyrosine kinases, and two ten-residue proline-rich peptides derived from the SH3-binding proteins 3BP-1 and 3BP-2. The X-ray data show that the basic mode of binding of both proline-rich peptides is the same. Peptides are bound over their entire length and interact with three major sites on the SH3 molecules by both hydrogen-bonding and van der Waals contacts. Residues 4-10 of the peptide adopt the conformation of a left-handed polyproline helix type II. Binding of the proline at position 2 requires a kink at the non-proline position 3.
Organizational Affiliation:
European Molecular Biology Laboratory, Heidelberg, Germany.
