Table 1. Bead Probe Small Molecule and the Number of PKs Identified on Data Combined from 90 and 180 min LC–MS/MS Analyses of the Bead Pull-Down of a HeLa Lysate.

bead	number of PKs identifieda	number of PKs overlapping with blank beads
blocked beads (control)	23	NA
BIMX (S1)	40	20
CZC8004 (S2)	61	19
purvalanol B (S6)	65	17
sunitinib (S7)	20	11
dasatinib (S8)	64	19
CTx-0294885 (S9)	105	21
KC19 (S10)	100	22

^aAnalyses were conducted as duplicates, using 90 and 180 min runs.