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:	USP21
Human P-Site:	S368
P-Site Sequence:	RYLEREDSKIVDLFV
UniProt:	Q9UK80
Intern. Prot. ID:	IPI00007262

Protein Phosphosite Match	Human Protein Short Name	Human UniProt. ID	Phosphosite Number	Sequence	% Identity / # AA	Target Size kDa
Phosphosite 0:	USP21	Q9UK80	S368	RYLEREDSKIVDLFV	100 / 9 AA	63
Phosphosite 1:	USP2	O75604	S409	KYLEREDSRIGDLFV	77 / 9 AA	68
Phosphosite 2:	PCM1	Q15154	S815	SVFEPEDSSIVDNEL	77 / 9 AA	228
Phosphosite 3:	GOLGB1	Q14789	S317	VETEREESKILLEKM	75 / 8 AA	376
Phosphosite 4:	LMO7	Q8WWI1	S1272	QEAERENSKYLDEEL	66 / 9 AA	193
Phosphosite 5:	Nav3	Q8IVL0	S80	KAKEKEDSKIYTDWA	85 / 7 AA	256
Phosphosite 6:	DNTTIP2	Q5QJE6	S219	AQTEKKDSKIVPGNE	75 / 8 AA	84
Phosphosite 7:	PCM1	Q15154	S816	VFEPEDSSIVDNELW	75 / 8 AA	228
Phosphosite 8:	MYH15	Q9Y2K3	S1568	GALERNESKILHFQL	55 / 9 AA	225
Phosphosite 9:	RIOK3	O14730	S280	MEDEKEDSKVIPTEC	62 / 8 AA	59
Phosphosite 10:	LCN12	Q6JVE5	T119	PGADREETRVVDSDY	44 / 9 AA	22
Phosphosite 11:	TAF11	Q15544	S74	TTVEREDSSLLNPAA	55 / 9 AA	23
Phosphosite 12:	NPC1L1	Q9UHC9	S314	VAPARDKSKMVDPKK	55 / 9 AA	149
Phosphosite 13:	GTF3C4	Q9UKN8	S604	WKPTHEDSKILLVDS	71 / 7 AA	92
Phosphosite 14:	ABCC5	O15440	S36	THRDREDSKFRRTRP	71 / 7 AA	161
Phosphosite 15:	UHRF1BP1L	A0JNW5	S1017	ILNYREDSNILSFDS	71 / 7 AA	164
Phosphosite 16:	USP4	Q13107	S445	NHRLRNDSVIVDTFH	75 / 8 AA	109
Phosphosite 17:	FRG1	Q14331	S228	LKISKEDSKILKKAR	71 / 7 AA	29
Phosphosite 18:	C1orf92	Q8N4P6	S137	VELEQEDSKSVKEIY	75 / 8 AA	62
Phosphosite 19:	USP11	P51784	S452	NHKRRNDSVIVDTFH	75 / 8 AA	110
Phosphosite 20:	C9orf164	Q92854	S833	VPTDREDSQRIDDLS	55 / 9 AA	14