. "Reviewed: Gotoh, N, 2011-08-26"^^ . "Authored: Rothfels, K, 2011-08-15"^^ . "The N terminal TKB domain of CBL binds to the phospho-tyrosine 55 of SPRY2, targeting SPRY2 for degradation by the 26S proteasome. Y55 is also a binding site for PP2A, which dephosphorylates numerous serine and threonine residues on SPRY2, allowing a conformational change that may promote a SPRY2:GRB2 interaction and limit the extent of MAPK activation following FGF stimulation."^^ . . . . . . . . "SPRY2 binds CBL"^^ . . . . .