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:	Y751
P-Site Sequence:	SETRRLYYDEQESEA
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	Y751	SETRRLYYDEQESEA	100 / 9 AA	109
Phosphosite 1:	USP4	Q13107	Y750	DSETRRLYYDEQESE	100 / 8 AA	109
Phosphosite 2:	GNAS	Q5JWF2	Y565	SRGRRVYYDEGVASS	85 / 7 AA	111
Phosphosite 3:	GNAS	Q5JWF2	Y564	SSRGRRVYYDEGVAS	85 / 7 AA	111
Phosphosite 4:	UBQLN1	Q9UMX0	T277	NALRRMYTDIQEPML	66 / 9 AA	63
Phosphosite 5:	ubiquilin 2	Q9UHD9	T273	NALRRMYTDIQEPML	66 / 9 AA	66
Phosphosite 6:	UBQLN4	Q9NRR5	T287	NALRRMYTDIQEPMF	66 / 9 AA	64
Phosphosite 7:	HGS	O14964	Y467	LDERRLYYEGLQDKL	55 / 9 AA	86
Phosphosite 8:	UCMA	Q8WVF2	Y89	VDELRREYYEEQRNE	75 / 8 AA	17
Phosphosite 9:	UCMA	Q8WVF2	Y90	DELRREYYEEQRNEF	75 / 8 AA	17
Phosphosite 10:	CAD	P27708	Y990	YDMCDRLYFDEISFE	83 / 6 AA	243
Phosphosite 11:	HGS	O14964	Y466	QLDERRLYYEGLQDK	83 / 6 AA	86
Phosphosite 12:	FAM150A	Q6UXT8	Y99	KHFHRLYYNTRECST	55 / 9 AA	14
Phosphosite 13:	BRMS1L	Q5PSV4	Y263	SEEGRLYYDGEWYIR	71 / 7 AA	38
Phosphosite 14:	BRMS1L	Q5PSV4	Y262	RSEEGRLYYDGEWYI	71 / 7 AA	38
Phosphosite 15:	Cx45	P36383	Y45	VGGESIYYDEQSKFV	71 / 7 AA	45
Phosphosite 16:	Cx45	P36383	Y44	AVGGESIYYDEQSKF	71 / 7 AA	45
Phosphosite 17:	C8A	P07357	Y199	STCERLYYGDDEKYF	62 / 8 AA	65
Phosphosite 18:	ATP6V1C2	Q8NEY4	Y252	FTVREFYYDEKEIER	66 / 9 AA	49
Phosphosite 19:	ZNF425	Q6IV72	S19	DDVALYFSEQEWEIL	71 / 7 AA	88
Phosphosite 20:	CHN1	P15882	Y98	QTRNFRLYYDGKHFV	71 / 7 AA	53