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:	PRB1
Human P-Site:	S272
P-Site Sequence:	PQGDKSRSPQSPPGK
UniProt:	P04280
Intern. Prot. ID:

Protein Phosphosite Match	Human Protein Short Name	Human UniProt. ID	Phosphosite Number	Sequence	% Identity / # AA	Target Size kDa
Phosphosite 0:	PRB1	P04280	S272	PQGDKSRSPQSPPGK	100 / 9 AA	39
Phosphosite 1:	PRB1	P04280	S89	PQGDKSRSPRSPPGK	88 / 9 AA	39
Phosphosite 2:	Basic salivary proline-rich protein 2	P02812	S110	PQGDKSRSPRSPPGK	88 / 9 AA	6
Phosphosite 3:	PRB1	P04280	S270	PPPQGDKSRSPQSPP	100 / 7 AA	39
Phosphosite 4:	ZNF576	Q9H609	S20	QDSPKERSPQSPGGN	87 / 8 AA	19
Phosphosite 5:	PRB1	P04280	S150	PQGDKSQSPRSPPGK	77 / 9 AA	39
Phosphosite 6:	PRPS1L1	P21108	S105	DKKDKSRSPISAKLV	77 / 9 AA	35
Phosphosite 7:	BSN	Q9UPA5	S676	YSQDASRSPQSLSDT	87 / 8 AA	416
Phosphosite 8:	PRB4	P10163	S238	QEGNKSRSARSPPGK	66 / 9 AA	31
Phosphosite 9:	C10orf137	Q3B7T1	S495	CLKLLDKSRHPQIIA	85 / 7 AA	139
Phosphosite 10:	SRRM2	Q9UQ35	S536	QRRGRSRSPQRPGWS	66 / 9 AA	300
Phosphosite 11:	ADD1	P35611	S355	KYKAKSRSPGSPVGE	77 / 9 AA	81
Phosphosite 12:	ABCC3	O15438	S1055	LLHNKIRSPQSFFDT	75 / 8 AA	169
Phosphosite 13:	TYR	P14679	T309	GNHDKSRTPRLPSSA	66 / 9 AA	60
Phosphosite 14:	FRAT1	Q92837	S88	VPADKARSPAVPLLL	66 / 9 AA	29
Phosphosite 15:	Basic salivary proline-rich protein 2	P02812	S172	QGDNKSRSSRSPPGK	66 / 9 AA	6
Phosphosite 16:	ZNF576	Q9H609	S23	PKERSPQSPGGNICH	100 / 6 AA	19
Phosphosite 17:	DNAJB4	Q9UDY4	S38	FHPDKNKSPQAEEKF	62 / 8 AA	38
Phosphosite 18:	ZC3H18	Q86VM9	S487	KGKPKPRSPQPPSRQ	75 / 8 AA	106
Phosphosite 19:	Bcr	P11274	S369	MFRDKSRSPSQNSQQ	100 / 6 AA	143
Phosphosite 20:	PRB1	P04280	S87	PPPQGDKSRSPRSPP	85 / 7 AA	39