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:	PRPF4B
Human P-Site:	S217
P-Site Sequence:	EKTTRSKSKERKKSK
UniProt:	Q13523
Intern. Prot. ID:	IPI00013721

Protein Phosphosite Match	Human Protein Short Name	Human UniProt. ID	Phosphosite Number	Sequence	% Identity / # AA	Target Size kDa
Phosphosite 0:	PRPF4B	Q13523	S217	EKTTRSKSKERKKSK	100 / 9 AA	117
Phosphosite 1:	SAPAP2	Q9P1A6	S279	KHSKRSKSKERKPEG	100 / 8 AA	118
Phosphosite 2:	RBM39	Q14498	S52	HERKRSKSKERKRSR	100 / 8 AA	59
Phosphosite 3:	TAF10	Q12962	S188	SGSSRSKSKDRKYTL	77 / 9 AA	22
Phosphosite 4:	SAPAP3	O95886	S244	RHGKRSKSKDRKGDG	87 / 8 AA	106
Phosphosite 5:	SON	P18583	S1901	SPKHRSKSRERKRKR	87 / 8 AA	264
Phosphosite 6:	RSRC2	Q7L4I2	S200	RSRTRSRSRDRKKRI	66 / 9 AA	51
Phosphosite 7:	PAGE3	Q5JUK9	S11	HQRTRSRSRERRDDQ	66 / 9 AA	12
Phosphosite 8:	PRPF4B	Q13523	S309	SKDRRSRSKERKSKR	87 / 8 AA	117
Phosphosite 9:	PRPF4B	Q13523	S215	VKEKTTRSKSKERKK	100 / 7 AA	117
Phosphosite 10:	SAPAP1	O14490	S184	RYGKRSKSKERRAEP	87 / 8 AA	109
Phosphosite 11:	CPB2	Q96IY4	S327	YSYTRSKSKDHEELS	75 / 8 AA	48
Phosphosite 12:	PHRF1	Q9P1Y6	S1191	WPQTRSHSPERKGAV	77 / 9 AA	179
Phosphosite 13:	LUC7L2	Q9Y383	S285	RHRSRSMSRERKRRT	66 / 9 AA	47
Phosphosite 14:	RBM16	Q9UPN6	S435	RKRSRSRSRERKRKS	66 / 9 AA	141
Phosphosite 15:	RSRC2	Q7L4I2	S47	YSRSRSRSRERKRKS	66 / 9 AA	51
Phosphosite 16:	RSRC2	Q7L4I2	S169	RKKSRSRSRERKRRI	66 / 9 AA	51
Phosphosite 17:	RSRC2	Q7L4I2	S149	RKKSRSRSRERKKSR	66 / 9 AA	51
Phosphosite 18:	PRPF38B	Q5VTL8	S430	KKHSRSRSRERKHRS	66 / 9 AA	64
Phosphosite 19:	SFRS3	P84103	S160	RSRSRSRSNERK___	66 / 9 AA	19
Phosphosite 20:	CPB2	Q96IY4	S325	FPYSYTRSKSKDHEE	85 / 7 AA	48