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:	Y505
P-Site Sequence:	GSPVYQLYALCNHSG
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	Y505	GSPVYQLYALCNHSG	100 / 9 AA	63
Phosphosite 1:	USP31	Q70CQ4	Y710	EDYIYDLYAVCNHHG	66 / 9 AA	147
Phosphosite 2:	USP2	O75604	Y544	NHAVYNLYAVSNHSG	66 / 9 AA	68
Phosphosite 3:	USP21	Q9UK80	Y502	DKAGSPVYQLYALCN	100 / 6 AA	63
Phosphosite 4:	ZBTB40	Q9NUA8	T16	QLLQQLYTLCKEQQF	71 / 7 AA	138
Phosphosite 5:	ZBTB40	Q9NUA8	Y15	RQLLQQLYTLCKEQQ	71 / 7 AA	138
Phosphosite 6:	CNNM4	Q6P4Q7	Y148	RSESMKLYALCTRAQ	71 / 7 AA	87
Phosphosite 7:	ANKRD6	Q9Y2G4	Y394	EFRAYQLYTLYRGKD	62 / 8 AA	80
Phosphosite 8:	ANKRD6	Q9Y2G4	T395	FRAYQLYTLYRGKDG	71 / 7 AA	80
Phosphosite 9:	PIP5KG	O60331	S158	RPDDYLYSLCNEPLI	83 / 6 AA	73
Phosphosite 10:	PIP5KG	O60331	Y157	IRPDDYLYSLCNEPL	83 / 6 AA	73
Phosphosite 11:	DPY19L3	Q6ZPD9	Y612	RERTRAVYQIYAKRA	83 / 6 AA	83
Phosphosite 12:	GNAT3	A8MTJ3	Y108	AEDQRQLYAMANTLE	71 / 7 AA	40
Phosphosite 13:	RP1	P56715	Y1911	ADSLDKLYALCGQHC	71 / 7 AA	241
Phosphosite 14:	TMEM39A	Q9NV64	S438	VVFYQLYSLLRSEKW	83 / 6 AA	56
Phosphosite 15:	NSUN5	Q96P11	Y37	FQNVKQLYALVCETQ	85 / 7 AA	47
Phosphosite 16:	ZW10	O43264	S684	EDGDRLYSLCKTVMD	57 / 7 AA	89
Phosphosite 17:	ZW10	O43264	Y683	TEDGDRLYSLCKTVM	57 / 7 AA	89
Phosphosite 18:	LRRC9	Q6ZRR7	Y738	LDDVYHLYNLEYLDA	71 / 7 AA	128
Phosphosite 19:	TMEM39A	Q9NV64	Y437	SVVFYQLYSLLRSEK	83 / 6 AA	56
Phosphosite 20:	TAF5L	O75529	Y210	KRTDYQLYASGSSSR	100 / 5 AA	66