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:	PRPF38B
Human P-Site:	S503
P-Site Sequence:	KSRKRSRSKERSHKR
UniProt:	Q5VTL8
Intern. Prot. ID:	IPI00018098

Protein Phosphosite Match	Human Protein Short Name	Human UniProt. ID	Phosphosite Number	Sequence	% Identity / # AA	Target Size kDa
Phosphosite 0:	PRPF38B	Q5VTL8	S503	KSRKRSRSKERSHKR	100 / 9 AA	64
Phosphosite 1:	RBM39	Q14498	S76	RERKRSRSKERRRSR	100 / 8 AA	59
Phosphosite 2:	FLJ22626	Q8N5F7	S189	KKKKSSRSKERSKKR	88 / 9 AA	47
Phosphosite 3:	SAPAP2	Q9P1A6	S279	KHSKRSKSKERKPEG	87 / 8 AA	118
Phosphosite 4:	RBM39	Q14498	S52	HERKRSKSKERKRSR	87 / 8 AA	59
Phosphosite 5:	PRPF4B	Q13523	S309	SKDRRSRSKERKSKR	87 / 8 AA	117
Phosphosite 6:	PRPF38B	Q5VTL8	S501	KEKSRKRSRSKERSH	100 / 7 AA	64
Phosphosite 7:	PPIG	Q13427	S516	KDQERSRSKEKSKQL	87 / 8 AA	89
Phosphosite 8:	CROP	O95232	S319	RDHKRSRSRERRRSR	87 / 8 AA	51
Phosphosite 9:	SAPAP1	O14490	S184	RYGKRSKSKERRAEP	87 / 8 AA	109
Phosphosite 10:	PRPF38B	Q5VTL8	S452	GKRSRSRSKEKSSKH	87 / 8 AA	64
Phosphosite 11:	SAFB2	Q14151	S591	SVKTTSRSKERSSKS	100 / 7 AA	107
Phosphosite 12:	RBM39	Q14498	S74	KSRERKRSRSKERRR	100 / 7 AA	59
Phosphosite 13:	DHX8	Q14562	S179	KKKKRSRSRDRNRDR	66 / 9 AA	139
Phosphosite 14:	SON	P18583	S2040	IRRKRSRSSERGRSP	77 / 9 AA	264
Phosphosite 15:	CPSF7	Q8N684	S423	SSRKRHRSRERSPSR	77 / 9 AA	52
Phosphosite 16:	RBM26	Q5T8P6	S188	RSRSRSWSKERLRER	85 / 7 AA	114
Phosphosite 17:	PLEKHA7	Q6IQ23	S359	LEGKRDRSKARSPYS	77 / 9 AA	127
Phosphosite 18:	DDX46	Q7L014	S120	KTENRSRSKEKTDGG	66 / 9 AA	117
Phosphosite 19:	RBM23	Q86U06	S78	RDRKRSRSRDRDRYR	75 / 8 AA	49
Phosphosite 20:	SAPAP3	O95886	S244	RHGKRSKSKDRKGDG	75 / 8 AA	106