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:	S116
P-Site Sequence:	ARSKSVSSGDLRPMG
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	S116	ARSKSVSSGDLRPMG	100 / 9 AA	63
Phosphosite 1:	USP21	Q9UK80	S115	LARSKSVSSGDLRPM	100 / 8 AA	63
Phosphosite 2:	C13orf33	Q5VYS4	S19	PSLTSISSGELRSLW	66 / 9 AA	34
Phosphosite 3:	CDK5RAP2	Q96SN8	S256	CPDENVSSGELRGLC	75 / 8 AA	215
Phosphosite 4:	C16orf81	Q8N9R0	S126	GPVSSHSSGDLRLWT	87 / 8 AA	16
Phosphosite 5:	KATNAL1	Q9BW62	S473	KKIAKSVSAADLEKY	75 / 8 AA	55
Phosphosite 6:	PHLDB1	Q86UU1	S564	CVQRKLSSGDLRVPV	66 / 9 AA	151
Phosphosite 7:	TBC1D22A	Q8WUA7	S135	AEPPSPPSGDLRLVK	75 / 8 AA	59
Phosphosite 8:	DLG1	Q12959	S517	DRIISVNSVDLRAAS	75 / 8 AA	100
Phosphosite 9:	DACT2	Q5SW24	S218	TFWPRPVSTGDLDRA	62 / 8 AA	83
Phosphosite 10:	NALCN	Q8IZF0	S1685	PISHSVSSVNLRFGG	75 / 8 AA	200
Phosphosite 11:	PTPN14	Q15678	S760	PGPRKSVSNGALRQD	75 / 8 AA	135
Phosphosite 12:	ITPR3	Q14573	S1702	LQNRKSTSRGDLPDP	75 / 8 AA	304
Phosphosite 13:	RFC5	P40937	S210	KALVTLSSGDMRRAL	62 / 8 AA	38
Phosphosite 14:	AK3	Q9UIJ7	S38	FELKHLSSGDLLRDN	75 / 8 AA	26
Phosphosite 15:	AK3	Q9UIJ7	S37	HFELKHLSSGDLLRD	75 / 8 AA	26
Phosphosite 16:	B4GALT1	P15291	S74	AAAIGQSSGELRTGG	83 / 6 AA	44
Phosphosite 17:	DCHS2	Q6V1P9	S416	EPIFYRISSGDLGGK	83 / 6 AA	322
Phosphosite 18:	SENP1	Q9P0U3	S84	SSDSFLGSGDLRTFG	71 / 7 AA	73
Phosphosite 19:	KREMEN1	Q96MU8	S425	KSHRVPASGDLRDCH	83 / 6 AA	52
Phosphosite 20:	CREB3L3	Q68CJ9	S189	DLLLSGSSGDLQQHH	75 / 8 AA	49