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:	USP4
Human P-Site:	S231
P-Site Sequence:	WPRQTLQSKSSTAPS
UniProt:	Q13107
Intern. Prot. ID:	IPI00011836

Protein Phosphosite Match	Human Protein Short Name	Human UniProt. ID	Phosphosite Number	Sequence	% Identity / # AA	Target Size kDa
Phosphosite 0:	USP4	Q13107	S231	WPRQTLQSKSSTAPS	100 / 9 AA	109
Phosphosite 1:	USP4	Q13107	S233	RQTLQSKSSTAPSRN	100 / 7 AA	109
Phosphosite 2:	GKAP1	Q5VSY0	S47	GKSQTLGSKSTTNEK	77 / 9 AA	42
Phosphosite 3:	ZBTB44	Q8NCP5	S355	EGLPTLQSTSSTNAP	77 / 9 AA	64
Phosphosite 4:	USP4	Q13107	T228	DGTWPRQTLQSKSST	100 / 6 AA	109
Phosphosite 5:	RREB1	Q92766	S565	SNAHLLQSKSGTQPH	66 / 9 AA	181
Phosphosite 6:	RREB1	Q92766	S567	AHLLQSKSGTQPHAA	85 / 7 AA	181
Phosphosite 7:	GIT2	Q14161	S470	KKLQTLQSENSNLRK	66 / 9 AA	85
Phosphosite 8:	SYNJ1	O43426	S511	VSEQTLQSASSKVLK	87 / 8 AA	173
Phosphosite 9:	ACBD5	Q5T8D3	S480	LTALQAKSSTSTLQT	85 / 7 AA	60
Phosphosite 10:	INTS7	Q9NVH2	S860	NVSSTLQSKSGQDYK	85 / 7 AA	107
Phosphosite 11:	UBTF	P17480	S673	SSRTTLQSKSESEED	100 / 6 AA	89
Phosphosite 12:	DDX43	Q9NXZ2	S483	HMQTFLQSMSSTDKV	85 / 7 AA	73
Phosphosite 13:	UBR4	Q5T4S7	S3363	SGQATTQSKSSTKKS	87 / 8 AA	574
Phosphosite 14:	SMCR7L	Q9NQG6	T100	RSLQTLPTDSSTFDT	66 / 9 AA	51
Phosphosite 15:	CLOCK	O15516	S630	IQQQTLQSTSTQSQQ	75 / 8 AA	95
Phosphosite 16:	FILIP1L	Q4L180	S410	LERETLQSKDFKLEV	83 / 6 AA	130
Phosphosite 17:	KIF15	Q9NS87	T1296	DEVERTQTLESKAFQ	83 / 6 AA	160
Phosphosite 18:	SPTBN4	Q9H254	T2541	RWGQTLPTTSSTDEG	66 / 9 AA	289
Phosphosite 19:	GCC2	Q8IWJ2	S1283	SELQTLQSEHDTLLE	66 / 9 AA	185
Phosphosite 20:	SHANK2	Q9UPX8	S370	TTALTLRSKSMTSEL	75 / 8 AA	159