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:	S191
P-Site Sequence:	HMISARSSEPFYSDD
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	S191	HMISARSSEPFYSDD	100 / 9 AA	63
Phosphosite 1:	USP21	Q9UK80	S190	FHMISARSSEPFYSD	100 / 8 AA	63
Phosphosite 2:	FAK	Q05397	S726	GYPSPRSSEGFYPSP	77 / 9 AA	120
Phosphosite 3:	GCM1	Q9NP62	S334	FSPSQNSSEPFYQQL	77 / 9 AA	49
Phosphosite 4:	TBC1D9	Q6ZT07	S228	IKVSTRSSEHFFSVF	66 / 9 AA	143
Phosphosite 5:	TPH1	P17752	S260	TQYVRHSSDPFYTPE	71 / 7 AA	51
Phosphosite 6:	BUB1	O43683	S159	LPAQARTSEPLHNVQ	62 / 8 AA	122
Phosphosite 7:	SLC19A2	O60779	S49	FFASLRPSEPFLTPY	66 / 9 AA	55
Phosphosite 8:	IHH	Q14623	S75	EGKIARSSERFKELT	85 / 7 AA	45
Phosphosite 9:	IHH	Q14623	S74	YEGKIARSSERFKEL	85 / 7 AA	45
Phosphosite 10:	ZO3	O95049	S860	APALARSSEPVQADE	100 / 6 AA	103
Phosphosite 11:	USP21	Q9UK80	Y195	ARSSEPFYSDDKMAH	100 / 5 AA	63
Phosphosite 12:	GCM1	Q9NP62	Y338	QNSSEPFYQQLPLEP	100 / 5 AA	49
Phosphosite 13:	USP34	Q70CQ2	S143	EEESSKSSDPFSLWS	62 / 8 AA	404
Phosphosite 14:	USP34	Q70CQ2	S142	TEEESSKSSDPFSLW	62 / 8 AA	404
Phosphosite 15:	RPE65	Q16518	Y58	EVGSEPFYHLFDGQA	100 / 5 AA	61
Phosphosite 16:	PRKDC	P78527	Y3036	KIWSEPFYQETYLPY	100 / 5 AA	469
Phosphosite 17:	NBR1	Q14596	S267	RRPVVGSSEPFCHSK	83 / 6 AA	107
Phosphosite 18:	BSN	Q9UPA5	S1939	APPGQSSSPFYGPRD	62 / 8 AA	416
Phosphosite 19:	RBM11	P57052	S92	RFGSSRSSEPANQSF	85 / 7 AA	32
Phosphosite 20:	KATNB1	Q9BVA0	S400	SRTPPRRSEPFPAPP	62 / 8 AA	72