Table 1.

Motif-X analysis of unique phosphopeptides

Motif	Motif score	Foreground matches	Foreground size	Background matches	Background size	Fold increase
[sP]	16	1214	6054	3860	40638	2.11
[LxRxxs]	27.45	106	4840	228	36778	3.53
[Rxxs]	16	557	4734	2671	36550	1.61
[sF]	14	176	4177	760	33879	1.88
[sxS]	8.37	733	4001	4958	33119	1.22
[tP]	16	138	524	511	5036	2.6

Lower case “s” and “t” indicate phosphoserine and phosphothreonine respectively. “x” represents any amino acid