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:	USP8
Human P-Site:	S557
P-Site Sequence:	GVKRQSKSEHETSDA
UniProt:	P40818
Intern. Prot. ID:	IPI00030915

Protein Phosphosite Match	Human Protein Short Name	Human UniProt. ID	Phosphosite Number	Sequence	% Identity / # AA	Target Size kDa
Phosphosite 0:	USP8	P40818	S557	GVKRQSKSEHETSDA	100 / 9 AA	128
Phosphosite 1:	USP8	P40818	S555	ITGVKRQSKSEHETS	100 / 7 AA	128
Phosphosite 2:	SIPA1L2	Q9P2F8	S300	RKLRTVKSEHETFKF	77 / 9 AA	190
Phosphosite 3:	POLR3E	Q9NVU0	S218	YGLRDSRSEHERQYL	75 / 8 AA	80
Phosphosite 4:	IQSEC1	Q6DN90	S461	SANRQSKSESDYSDG	75 / 8 AA	108
Phosphosite 5:	ARPP-21	Q9UBL0	S349	SGSRQSSSENELKWS	75 / 8 AA	89
Phosphosite 6:	ARPP-21	Q9UBL0	S348	TSGSRQSSSENELKW	75 / 8 AA	89
Phosphosite 7:	IQSEC1	Q6DN90	S459	NGSANRQSKSESDYS	100 / 6 AA	108
Phosphosite 8:	C18orf25	Q96B23	S145	RKSRRSRSESETSTM	66 / 9 AA	43
Phosphosite 9:	KLF12	Q9Y4X4	S238	LSPRQSKSDSDDDDL	62 / 8 AA	44
Phosphosite 10:	VPS72	Q15906	T137	RKSMRQSTAEHTRQT	71 / 7 AA	41
Phosphosite 11:	FHDC1	Q9C0D6	S201	EDIHQGKSEHYGSET	71 / 7 AA	125
Phosphosite 12:	TXNDC13	Q9H1E5	S342	DSLRQRKSQHADKGL	62 / 8 AA	39
Phosphosite 13:	VPS72	Q15906	S136	SRKSMRQSTAEHTRQ	71 / 7 AA	41
Phosphosite 14:	KLF12	Q9Y4X4	S236	RGLSPRQSKSDSDDD	83 / 6 AA	44
Phosphosite 15:	Wnk3	Q9BYP7	S391	GCIRQNKSERLSIRD	71 / 7 AA	192
Phosphosite 16:	MESP1	Q9BRJ9	S88	SGQRQSASEREKLRM	75 / 8 AA	29
Phosphosite 17:	MESP2	Q0VG99	S87	GGQRQSASEREKLRM	75 / 8 AA	42
Phosphosite 18:	DNAI2	Q9GZS0	S58	IQCSISMSEHEANSE	71 / 7 AA	69
Phosphosite 19:	P2RY1	P47900	S354	EANLQSKSEDMTLNI	75 / 8 AA	42
Phosphosite 20:	SYBU	Q9NX95	S7	_MGPLRESKKEHRVQ	71 / 7 AA	72