calcineurin , originally identified as a calmodulin-dependent phosphoprotein phosphatase ( stewart , a.a. et al . ( 1982 ) febs lett . 137 , 80-84 ) also uses p-nitrophenyl phosphate and phosphotyrosine as substrates ( pallen , c.j . and wang , j.h . ( 1983 ) j. biol . chem . 258 , 8550-8553 ) .
C0054450
calcineurin
C0031686
phosphoprotein