. . . . . . . . "experimental"@en . . . . . "21820-51-9"@en . . . . "An amino acid that occurs in endogenous proteins. Tyrosine phosphorylation and dephosphorylation plays a role in cellular signal transduction and possibly in cell growth control and carcinogenesis. [PubChem]"@en . . "Phosphonotyrosine"@en . . . . . . . . . . . . . . . . . . . . . .