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:	Y502
P-Site Sequence:	DKAGSPVYQLYALCN
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	Y502	DKAGSPVYQLYALCN	100 / 9 AA	63
Phosphosite 1:	ACF	Q9NQ94	Y465	NNWGQPVYQLHSAIG	66 / 9 AA	65
Phosphosite 2:	PDE4DIP	Q5VU43	S1830	GDLSSGSSVYQLNSK	85 / 7 AA	130
Phosphosite 3:	USP21	Q9UK80	S499	FASDKAGSPVYQLYA	100 / 6 AA	63
Phosphosite 4:	USP21	Q9UK80	Y505	GSPVYQLYALCNHSG	100 / 6 AA	63
Phosphosite 5:	PRKDC	P78527	Y959	GQGAPPMYQLYKRTF	62 / 8 AA	469
Phosphosite 6:	ANK3	Q12955	Y2759	QESKLPVYQVFAREK	71 / 7 AA	480
Phosphosite 7:	CDH23	Q9H251	Y2732	PPKGSPQYQLLTVPE	85 / 7 AA	370
Phosphosite 8:	DPY19L3	Q6ZPD9	Y612	RERTRAVYQIYAKRA	62 / 8 AA	83
Phosphosite 9:	PBRM1	Q86U86	Y387	MDVSNPFYQLYDTVR	55 / 9 AA	193
Phosphosite 10:	BTG3	Q14201	Y172	TAAASPVYQISELIF	71 / 7 AA	29
Phosphosite 11:	Sos1	Q07889	Y884	AMNSSPVYRLDHTFE	71 / 7 AA	152
Phosphosite 12:	AML1	Q01196	S375	PFQASSPSYHLYYGA	62 / 8 AA	49
Phosphosite 13:	GJD4	Q96KN9	Y45	VLAGRPVYQDEQERF	83 / 6 AA	40
Phosphosite 14:	ANGPTL6	Q8NI99	Y335	WLGLEPVYQLTSRGD	100 / 5 AA	52
Phosphosite 15:	BTG3	Q14201	S169	SSVTAAASPVYQISE	83 / 6 AA	29
Phosphosite 16:	CMYA1	Q702N8	Y484	QGIGSPVYAMQDSKG	71 / 7 AA	199
Phosphosite 17:	AML1	Q01196	Y376	FQASSPSYHLYYGAS	62 / 8 AA	49
Phosphosite 18:	UBOX5	O94941	Y500	YFKKEPVYQLPCGHL	100 / 5 AA	59
Phosphosite 19:	TMEM184B	Q9Y519	Y361	IHNFSPAYQQYTQQS	62 / 8 AA	46
Phosphosite 20:	LDB3	O75112	Y246	VDSASPVYQAVIKSQ	83 / 6 AA	77