Fig. 2.
The BG loop forms part of the interface with the pTyr738 peptide. The surface of the cSH2 domain (center panel) is colored to highlight the BG loop and phosphotyrosine-binding pocket (pink) as well as intervening residues (wheat) that interact with the peptide. Side panels detail interactions between the peptide and the cSH2 domain; dashed lines represent hydrogen bonds.