the phosphorylation of mek-2 increased in the presence of 10 ( -4 ) m dibutyryl cyclic amp ( twofold ) , 1 mm methylisobutylxanthine ( 2.5-fold ) , 10 ( -5 ) m isoproterenol ( fivefold ) , and 10 ( -9 ) m cholera toxin ( sevenfold ) .
C0031715
phosphorylation
C1434641
mek-2