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:	T451
P-Site Sequence:	TRSTKKLTVQRFPRI
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	T451	TRSTKKLTVQRFPRI	100 / 9 AA	63
Phosphosite 1:	USP2	O75604	S490	KRCIKKFSIQRFPKI	55 / 9 AA	68
Phosphosite 2:	FSH receptor	P23945	T395	TTSQYKLTVPRFLMC	85 / 7 AA	78
Phosphosite 3:	COL6A6	A6NMZ7	T1157	GTAEKKLTVHNFDEL	75 / 8 AA	247
Phosphosite 4:	NUDCD2	Q8WVJ2	T123	DQMQRKLTLERFQKE	62 / 8 AA	18
Phosphosite 5:	NLRP11	P59045	S597	HLRTLKLSVQRIFQN	66 / 9 AA	118
Phosphosite 6:	CEP250	Q9BV73	T1504	QEREQKLTVQREQIR	100 / 6 AA	281
Phosphosite 7:	SHROOM4	Q9ULL8	T963	TWKPRKLTVQEFPGD	75 / 8 AA	166
Phosphosite 8:	Peregrin	P55201	T529	SKITNRLTIQRKSQF	62 / 8 AA	138
Phosphosite 9:	MGAT5B	Q3V5L5	T262	KKRTKRLTAQWALAA	62 / 8 AA	90
Phosphosite 10:	ZNF354B	Q96LW1	T153	VAHTKILTVDRSHKN	75 / 8 AA	71
Phosphosite 11:	CYTH1	Q15438	T210	PNVKDKPTVERFIAM	71 / 7 AA	46
Phosphosite 12:	TAF9	Q16594	T183	VGTPMSLTGQRFTVQ	62 / 8 AA	29
Phosphosite 13:	AGPAT3	Q9NRZ7	T81	TLFTDQATVERFGKE	55 / 9 AA	43
Phosphosite 14:	STIL	Q15468	T96	DEEGVTLTVDRFDPG	83 / 6 AA	143
Phosphosite 15:	Net1	Q7Z628	T533	HPSARKLTAQRRAST	62 / 8 AA	68
Phosphosite 16:	BCoR	Q6W2J9	T1393	ENADGKVTVRRFRKR	71 / 7 AA	192
Phosphosite 17:	WRN	Q14191	T233	NLEILDDTVQRFAIN	100 / 5 AA	162
Phosphosite 18:	CCDC157	Q569K6	T119	PCMSVGLTVRRFWDS	83 / 6 AA	84
Phosphosite 19:	KIF1A	Q12756	T1613	MYNSDKDTVERFVLN	55 / 9 AA	191
Phosphosite 20:	ASCC3	Q8N3C0	T1147	RLEEKKLTVDKLKDM	62 / 8 AA	251