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:	CDK13
Human P-Site:	S422
P-Site Sequence:	YSSRHSRSRSRHRLS
UniProt:	Q14004
Intern. Prot. ID:	IPI00456970

Protein Phosphosite Match	Human Protein Short Name	Human UniProt. ID	Phosphosite Number	Sequence	% Identity / # AA	Target Size kDa
Phosphosite 0:	CDK13	Q14004	S422	YSSRHSRSRSRHRLS	100 / 9 AA	165
Phosphosite 1:	SF2	Q07955	S244	YSPRHSRSRSRT___	100 / 8 AA	28
Phosphosite 2:	ACIN1	Q9UKV3	S1327	DTKRHSRSRSRSTPV	100 / 8 AA	152
Phosphosite 3:	SFRS5	Q13243	S186	GSKRHSRSRSRSRSR	100 / 8 AA	31
Phosphosite 4:	SFRS11	Q05519	S251	EKRRHSRSRSRSRRR	100 / 8 AA	54
Phosphosite 5:	CDK13	Q14004	S431	SRHRLSRSRSRHSSI	88 / 9 AA	165
Phosphosite 6:	PRPF38B	Q5VTL8	S428	KEKKHSRSRSRERKH	87 / 8 AA	64
Phosphosite 7:	SPEN	Q96T58	S242	RNYQHSRSRSPHSSQ	77 / 9 AA	402
Phosphosite 8:	SFRS16	Q8N2M8	S417	RSGRHARSRSRSWSR	87 / 8 AA	77
Phosphosite 9:	PDE4C	Q08493	S19	ACSRLSRSRGRHSMT	77 / 9 AA	80
Phosphosite 10:	ACIN1	Q9UKV3	S1325	RRDTKRHSRSRSRST	100 / 7 AA	152
Phosphosite 11:	SFRS18	Q8TF01	S561	RKKRHSRSRSPTIKA	100 / 7 AA	93
Phosphosite 12:	SFRS4	Q08170	S332	KSLRQSRSRSRSKGG	87 / 8 AA	57
Phosphosite 13:	SFRS18	Q8TF01	S559	PKRKKRHSRSRSPTI	100 / 7 AA	93
Phosphosite 14:	U2AF2	P26368	S32	RKRSHSRSRSRDRKR	87 / 8 AA	54
Phosphosite 15:	CROP	O95232	S295	ERRKRSRSRSRHSSR	77 / 9 AA	51
Phosphosite 16:	GPATCH8	Q9UKJ3	S852	SGSEHSRSRSRSGRR	100 / 7 AA	164
Phosphosite 17:	RSRC2	Q7L4I2	S128	RGRSHSRSRSRERRH	100 / 7 AA	51
Phosphosite 18:	RBM16	Q9UPN6	S406	RSRTHSRSRSRSPRK	100 / 7 AA	141
Phosphosite 19:	SFRS16	Q8N2M8	S435	RSRRYSRSRSRGRRH	87 / 8 AA	77
Phosphosite 20:	SF2	Q07955	S242	PRYSPRHSRSRSRT_	100 / 7 AA	28