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:	S182
P-Site Sequence:	EPPASHGSFHMISAR
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	S182	EPPASHGSFHMISAR	100 / 9 AA	63
Phosphosite 1:	PLCXD2	Q0VAA5	S259	SERASRGSFHVSQAI	75 / 8 AA	35
Phosphosite 2:	ZNF521	Q96K83	T1040	LELKIHGTFHMQKTG	83 / 6 AA	148
Phosphosite 3:	ZNF423	Q2M1K9	T1040	LELKIHGTFHMQKLA	83 / 6 AA	145
Phosphosite 4:	TACC3	Q9Y6A5	S402	PMPASRGSYHLDWDK	62 / 8 AA	90
Phosphosite 5:	DVL2	O14641	S720	ELTASRQSFHMAMGN	75 / 8 AA	79
Phosphosite 6:	C9orf89	Q96LW7	S187	PPSLSHGSFHTAWGI	100 / 6 AA	26
Phosphosite 7:	E2F7	Q96AV8	S410	QKLARHGSFNTVQAS	55 / 9 AA	100
Phosphosite 8:	USP21	Q9UK80	S179	IRTEPPASHGSFHMI	100 / 6 AA	63
Phosphosite 9:	KSR	Q8IVT5	S332	RFDLSHGSPQMVRRD	62 / 8 AA	102
Phosphosite 10:	ASXL1	Q8IXJ9	S1146	TKDQSHGSLRMGSLH	71 / 7 AA	165
Phosphosite 11:	KIAA0226	Q92622	S562	YQEAEHGSFRVTSSS	55 / 9 AA	109
Phosphosite 12:	PRKDC	P78527	S1667	SFNTSHGSFPEVFTT	55 / 9 AA	469
Phosphosite 13:	GLIS1	Q8NBF1	S517	SPQGYQGSFHSIQSC	71 / 7 AA	66
Phosphosite 14:	SPEN	Q96T58	S1268	SPSVRHGSFHEDEDP	71 / 7 AA	402
Phosphosite 15:	BMP2K	Q9NSY1	S1111	RQNSLHGSFHSADVL	100 / 5 AA	129
Phosphosite 16:	BMP2KL	Q5H9B9	S361	RQNSLHGSFHSADVL	100 / 5 AA	46
Phosphosite 17:	FRS3	O43559	S385	AAIRSHGSFPVPLTR	71 / 7 AA	54
Phosphosite 18:	CDCA4	Q9BXL8	S157	GPRENRGSFHKSLDQ	50 / 8 AA	26
Phosphosite 19:	SLC25A21	Q9BQT8	S59	SYKSLVDSFRMIFQM	66 / 6 AA	33
Phosphosite 20:	JMY	Q8N9B5	S902	LASLKRGSFHLKKVE	66 / 6 AA	111