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:	S115
P-Site Sequence:	LARSKSVSSGDLRPM
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	S115	LARSKSVSSGDLRPM	100 / 9 AA	63
Phosphosite 1:	USP21	Q9UK80	S116	ARSKSVSSGDLRPMG	100 / 8 AA	63
Phosphosite 2:	DACT2	Q5SW24	S218	TFWPRPVSTGDLDRA	55 / 9 AA	83
Phosphosite 3:	KATNAL1	Q9BW62	S473	KKIAKSVSAADLEKY	66 / 9 AA	55
Phosphosite 4:	KATNA1	O75449	S474	KKVSKSVSAADIERY	66 / 9 AA	56
Phosphosite 5:	GCM1	Q9NP62	S275	LSSSRTYSSGDLLPP	66 / 9 AA	49
Phosphosite 6:	ITPR3	Q14573	S1702	LQNRKSTSRGDLPDP	75 / 8 AA	304
Phosphosite 7:	ALMS1	Q8TCU4	S2311	EPSSTGVSNGDLLHR	66 / 9 AA	461
Phosphosite 8:	PTPN14	Q15678	S760	PGPRKSVSNGALRQD	75 / 8 AA	135
Phosphosite 9:	USP21	Q9UK80	S113	TNLARSKSVSSGDLR	100 / 7 AA	63
Phosphosite 10:	LPIN3	Q9BQK8	S333	TEESKTQSSGDMGLP	66 / 9 AA	94
Phosphosite 11:	AK3	Q9UIJ7	S38	FELKHLSSGDLLRDN	75 / 8 AA	26
Phosphosite 12:	AK3	Q9UIJ7	S37	HFELKHLSSGDLLRD	75 / 8 AA	26
Phosphosite 13:	XRN1	Q8IZH2	S1205	HSSSSSVSSGHLGAL	77 / 9 AA	194
Phosphosite 14:	SBNO1	A3KN83	S754	YESSKNMSSGDDDDF	75 / 8 AA	154
Phosphosite 15:	CCDC68	Q9H2F9	S315	TKVSKAVSTSELKTE	55 / 9 AA	39
Phosphosite 16:	CNGB3	Q9NQW8	S78	DKLSKKNSSGDLTTN	77 / 9 AA	92
Phosphosite 17:	LIPE	Q05469	S9	EPGSKSVSRSDWQPE	66 / 9 AA	117
Phosphosite 18:	BLM	P54132	S464	HLPSNSVSPGDCLLT	75 / 8 AA	159
Phosphosite 19:	Ig kappa chain V-III region WOL	P01623	S30	CRASQSVSSGYLGWY	77 / 9 AA	12
Phosphosite 20:	CDK5RAP2	Q96SN8	S256	CPDENVSSGELRGLC	71 / 7 AA	215