Table 1

Effect of SB-431542 on the activities of protein kinases in vitro

Protein KinaseActivity
% control
ALK21-a 120
ALK41-a 12
ALK61-a 50
AMPK97
Chk1100
CK293
GSK3β116
JNK199
lck104
MAPK298
MAPKAP-K1β113
MAPKAP-K295
MKK1104
MSK1109
p70 S6K100
PDK192
Phos. kinase101
PKA111
PKBα89
PKCα99
PRAK80
ROKα98
p38 MAPKα51
p38 MAPKβ90
p38 MAPKγ110
p38 MAPKδ99
SGK92

Protein kinases were assayed with 10 μM SB-431542 in the presence of 0.1 mM ATP. Activities are given as the mean of duplicate determinations relative to control incubations with DMSO vehicle.

    • 1-a  For ALK2, ALK4, and ALK6, purified kinase domains minus the GS regions were used.