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:	S270
P-Site Sequence:	PPPQGDKSRSPQSPP
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	S270	PPPQGDKSRSPQSPP	100 / 9 AA	39
Phosphosite 1:	PRB1	P04280	S87	PPPQGDKSRSPRSPP	88 / 9 AA	39
Phosphosite 2:	Basic salivary proline-rich protein 2	P02812	S57	PPPQGDKSRSPR___	88 / 9 AA	6
Phosphosite 3:	Basic salivary proline-rich protein 2	P02812	S108	PPPQGDKSRSPRSPP	88 / 9 AA	6
Phosphosite 4:	PRB1	P04280	S272	PQGDKSRSPQSPPGK	100 / 7 AA	39
Phosphosite 5:	PRB1	P04280	S148	PPPQGDKSQSPRSPP	87 / 8 AA	39
Phosphosite 6:	UBR2	Q8IWV8	S1627	PKSGGDKSRAPTLCL	85 / 7 AA	201
Phosphosite 7:	NIPAL4	Q0D2K0	S38	ASHAGDKSRPPAPEL	85 / 7 AA	50
Phosphosite 8:	C10orf137	Q3B7T1	S495	CLKLLDKSRHPQIIA	85 / 7 AA	139
Phosphosite 9:	PRB4	P10163	S236	PPQEGNKSRSARSPP	55 / 9 AA	31
Phosphosite 10:	PRPS1L1	P21108	S105	DKKDKSRSPISAKLV	100 / 6 AA	35
Phosphosite 11:	VPREB1	P12018	S78	YFSQSDKSQGPQVPP	66 / 9 AA	17
Phosphosite 12:	PRB1	P04280	S89	PQGDKSRSPRSPPGK	85 / 7 AA	39
Phosphosite 13:	Basic salivary proline-rich protein 2	P02812	S110	PQGDKSRSPRSPPGK	85 / 7 AA	6
Phosphosite 14:	Bcr	P11274	S369	MFRDKSRSPSQNSQQ	100 / 6 AA	143
Phosphosite 15:	PRPF4B	Q13523	S292	SRDRGKKSRSPVDLR	75 / 8 AA	117
Phosphosite 16:	PRPS1L1	P21108	S103	RQDKKDKSRSPISAK	100 / 6 AA	35
Phosphosite 17:	Bcr	P11274	S367	YRMFRDKSRSPSQNS	100 / 6 AA	143
Phosphosite 18:	Rabphilin 3A	Q9Y2J0	S261	SGGAGDSSRSPAGLR	85 / 7 AA	77
Phosphosite 19:	KIAA1737	Q9C0C6	S366	LFIEATKSRAPQAWA	55 / 9 AA	43
Phosphosite 20:	Rabphilin 3A	Q9Y2J0	S260	HSGGAGDSSRSPAGL	85 / 7 AA	77