Note - Blast analyses are based on comparisons of the phosphosites and the bordering four amino acids on each side of these phosphosites.

Phosphosite
Human Protein:	USP4
Human P-Site:	S903
P-Site Sequence:	YFDDSNVSLASEDQI
UniProt:	Q13107
Intern. Prot. ID:	IPI00011836

Protein Phosphosite Match	Human Protein Short Name	Human UniProt. ID	Phosphosite Number	Sequence	% Identity / # AA	Target Size kDa
Phosphosite 0:	USP4	Q13107	S903	YFDDSNVSLASEDQI	100 / 9 AA	109
Phosphosite 1:	ARHGAP27	Q6ZUM4	S300	ASVDSHVSLETEWGQ	66 / 9 AA	98
Phosphosite 2:	ZNF434	Q9NX65	S37	QRKDSHVSLATGVPW	75 / 8 AA	55
Phosphosite 3:	COL16A1	Q07092	T329	GARDSNVTLAPSGPK	75 / 8 AA	158
Phosphosite 4:	CHGB	P05060	S317	ESEESNVSMASLGEK	75 / 8 AA	78
Phosphosite 5:	FBN1	P35555	S2752	SETEANVSLASWDVE	75 / 8 AA	312
Phosphosite 6:	PRPF4B	Q13523	S562	LAEDSNMSVPSEPSS	66 / 9 AA	117
Phosphosite 7:	USP3	Q9Y6I4	S217	SQGDNNVSLVEEFRK	66 / 9 AA	59
Phosphosite 8:	MYST3	Q92794	S396	GLDFCRDSNVSLKFN	100 / 6 AA	225
Phosphosite 9:	KIAA1199	Q8WUJ3	S314	HGEYFNVSLSSEWVQ	85 / 7 AA	153
Phosphosite 10:	MYST3	Q92794	S399	FCRDSNVSLKFNKKT	100 / 6 AA	225
Phosphosite 11:	USP4	Q13107	S900	KWYYFDDSNVSLASE	100 / 6 AA	109
Phosphosite 12:	KIAA1199	Q8WUJ3	S316	EYFNVSLSSEWVQDV	85 / 7 AA	153
Phosphosite 13:	SMG5	Q9UPR3	S334	LPSSPNLSLASEDEE	75 / 8 AA	114
Phosphosite 14:	MAGI2	Q86UL8	S592	PVHDDNVSMASSGAT	75 / 8 AA	159
Phosphosite 15:	MADD	Q8WXG6	S1166	ISADSGVSLTSSSQR	75 / 8 AA	183
Phosphosite 16:	LENG4	Q96N66	S117	LKLVSLASEVQDLHL	100 / 6 AA	53
Phosphosite 17:	SGOL2	Q562F6	S34	KTTKLNVSLASKIKT	85 / 7 AA	145
Phosphosite 18:	NAP5	O14513	S605	EKSPSDVSLAADTDK	62 / 8 AA	209
Phosphosite 19:	RIBC2	Q9H4K1	S276	ALDSSNLSLAKEQHL	75 / 8 AA	37
Phosphosite 20:	DEPDC4	Q8N2C3	S156	EFEDSNISLYRFLGN	83 / 6 AA	34