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:	USP53
Human P-Site:	S419
P-Site Sequence:	NISSSNRSHSHTGVG
UniProt:	Q70EK8
Intern. Prot. ID:

Protein Phosphosite Match	Human Protein Short Name	Human UniProt. ID	Phosphosite Number	Sequence	% Identity / # AA	Target Size kDa
Phosphosite 0:	USP53	Q70EK8	S419	NISSSNRSHSHTGVG	100 / 9 AA	121
Phosphosite 1:	USP53	Q70EK8	S421	SSSNRSHSHTGVGKG	100 / 7 AA	121
Phosphosite 2:	STOX2	Q9P2F5	S472	SKVHRSHSHTQDRRS	85 / 7 AA	103
Phosphosite 3:	RPAP1	Q9BWH6	S264	SLVAFLRSHSHTQEQ	100 / 6 AA	153
Phosphosite 4:	RPAP1	Q9BWH6	S266	VAFLRSHSHTQEQTG	100 / 6 AA	153
Phosphosite 5:	HRC	P23327	S157	HHLPSHRSHSHQDED	75 / 8 AA	80
Phosphosite 6:	SRRM2	Q9UQ35	S474	AKRDKSHSHTPSRRM	71 / 7 AA	300
Phosphosite 7:	SRRM2	Q9UQ35	S472	GRAKRDKSHSHTPSR	71 / 7 AA	300
Phosphosite 8:	PARP8	Q8N3A8	S650	WVISSNRSHIVKLPV	100 / 6 AA	96
Phosphosite 9:	PPRC1	Q5VV67	S1523	RRYSSYRSHDHYQRQ	75 / 8 AA	178
Phosphosite 10:	CCDC39	Q9UFE4	S881	GSRQSSRSPSHTSLS	75 / 8 AA	110
Phosphosite 11:	FLJ23588	Q5THR3	S13	IIPDWLRSHPHTRKF	83 / 6 AA	173
Phosphosite 12:	USP53	Q70EK8	S416	PTDNISSSNRSHSHT	100 / 6 AA	121
Phosphosite 13:	TTMA	A6NKL6	S113	SSGSKNRSRSHPRAP	75 / 8 AA	64
Phosphosite 14:	NAV1	Q8NEY1	S964	ETKERRHSHTIGGLP	71 / 7 AA	202
Phosphosite 15:	GPATCH8	Q9UKJ3	S946	CSQSRSRSRSHTRER	66 / 9 AA	164
Phosphosite 16:	PLCL4	O75038	S1342	VRRSSSRSHSRVRAI	66 / 9 AA	68
Phosphosite 17:	Cdc20	Q12834	S49	PMRAANRSHSAGRTP	71 / 7 AA	55
Phosphosite 18:	CdGAP	Q2M1Z3	S415	EGGFDVSSDRSHLQG	83 / 6 AA	157
Phosphosite 19:	PARD6B	Q9BYG5	S4	____MNRSHRHGAGS	83 / 6 AA	41
Phosphosite 20:	PRSS16	Q9NQE7	S323	LGGGGNRSHSTPYCG	71 / 7 AA	55