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:	S494
P-Site Sequence:	LSLGDFASDKAGSPV
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	S494	LSLGDFASDKAGSPV	100 / 9 AA	63
Phosphosite 1:	ZBED4	O75132	S17	KEDGDFVSDKIKFKI	85 / 7 AA	130
Phosphosite 2:	SMCHD1	A6NHR9	S213	TRQGDFESDHSGYVR	66 / 9 AA	226
Phosphosite 3:	MYH10	P35580	S1129	ELQEDFESEKASRNK	62 / 8 AA	229
Phosphosite 4:	TUBGCP6	Q96RT7	S1041	LPTGDYASEIAPTRP	62 / 8 AA	200
Phosphosite 5:	HIVEP2	P31629	S1320	VLQEDFASANAGSLQ	75 / 8 AA	269
Phosphosite 6:	MN1	Q10571	S1046	PNVGEFASDEVSTSY	55 / 9 AA	136
Phosphosite 7:	FREM3	P0C091	S197	RRVLDFASLKSGATA	75 / 8 AA	238
Phosphosite 8:	ADARB2	Q9NS39	T213	PGPGTDFTSDQADFP	71 / 7 AA	81
Phosphosite 9:	ADARB1	P78563	S167	SVNTDFTSDQADFPD	71 / 7 AA	81
Phosphosite 10:	ATF4	P18848	S51	FKPHGFSSDKAKAGS	83 / 6 AA	39
Phosphosite 11:	GLDC	P23378	S745	CRPGDFGSDVSHLNL	83 / 6 AA	113
Phosphosite 12:	TUBGCP6	Q96RT7	Y1039	GGLPTGDYASEIAPT	66 / 6 AA	200
Phosphosite 13:	CASC1	Q6TDU7	S685	HMVKDFASEEAMEKV	71 / 7 AA	83
Phosphosite 14:	WDYHV1	Q96HA8	S144	SYLKNFASDRSHMKD	57 / 7 AA	24
Phosphosite 15:	FAM46D	Q8NEK8	Y187	LDPMLDFYSDKNAKL	83 / 6 AA	45
Phosphosite 16:	AGC1	P16112	S1895	YFSGDFASTTNVSGE	100 / 5 AA	250
Phosphosite 17:	FBXO24	O75426	S189	RGAKDFASDPRCDTV	100 / 5 AA	65
Phosphosite 18:	YEATS2	Q9ULM3	S151	SQHNDFLSDKDNNSN	71 / 7 AA	151
Phosphosite 19:	ELYS	Q8WYP5	S1610	VEPGDFASSDVLPKA	100 / 5 AA	252