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:	S179
P-Site Sequence:	IRTEPPASHGSFHMI
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	S179	IRTEPPASHGSFHMI	100 / 9 AA	63
Phosphosite 1:	DMPK2	Q6DT37	S382	PGTLPPPSHGAFSGH	75 / 8 AA	173
Phosphosite 2:	BAG3	O95817	S165	AAAQPPASHGPERSQ	85 / 7 AA	62
Phosphosite 3:	USP21	Q9UK80	S182	EPPASHGSFHMISAR	100 / 6 AA	63
Phosphosite 4:	SAPAP3	O95886	T752	LPYEPPATDGSPGPA	75 / 8 AA	106
Phosphosite 5:	NMDAR2C	Q14957	S1176	PHLPPCASHGSWLSG	75 / 8 AA	135
Phosphosite 6:	CREB3L1	Q96BA8	S211	MPPTPPSSHGSDSDG	85 / 7 AA	57
Phosphosite 7:	CREB3L2	Q70SY1	S209	LPPTPPSSHGSDSEG	85 / 7 AA	57
Phosphosite 8:	ZFP106	Q9H2Y7	S1164	PLFLEPPSSHVSPSP	75 / 8 AA	209
Phosphosite 9:	MAGI3	Q5TCQ9	S1223	VSKRDPPSSHGHSNK	71 / 7 AA	166
Phosphosite 10:	MAGI3	Q5TCQ9	S1224	SKRDPPSSHGHSNKK	71 / 7 AA	166
Phosphosite 11:	NOTCH3	Q9UM47	S2117	PFGGPPASPGGFPLE	75 / 8 AA	244
Phosphosite 12:	C9orf89	Q96LW7	S184	LPLPPSLSHGSFHTA	75 / 8 AA	26
Phosphosite 13:	LAD1	O00515	S298	LAQEPPASGGSPATT	87 / 8 AA	57
Phosphosite 14:	Bim	O43521	S69	GPLAPPASPGPFATR	66 / 9 AA	22
Phosphosite 15:	CREB3L1	Q96BA8	S210	QMPPTPPSSHGSDSD	85 / 7 AA	57
Phosphosite 16:	CREB3L2	Q70SY1	S208	HLPPTPPSSHGSDSE	85 / 7 AA	57
Phosphosite 17:	MKL1	Q969V6	S130	LSPEQPASHESQGSV	75 / 8 AA	99
Phosphosite 18:	ZFP106	Q9H2Y7	S1165	LFLEPPSSHVSPSPT	75 / 8 AA	209
Phosphosite 19:	RSC1A1	Q92681	T557	LLEYEPPTSHPSSSP	75 / 8 AA	67
Phosphosite 20:	GPATCH8	Q9UKJ3	S650	NKQEPGGSHGSETED	75 / 8 AA	164