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:	S420
P-Site Sequence:	SPYSSRHSRSRSRHR
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	S420	SPYSSRHSRSRSRHR	100 / 9 AA	165
Phosphosite 1:	SF2	Q07955	S242	PRYSPRHSRSRSRT_	88 / 9 AA	28
Phosphosite 2:	SFRS5	Q13243	S184	IEGSKRHSRSRSRSR	88 / 9 AA	31
Phosphosite 3:	ACIN1	Q9UKV3	S1325	RRDTKRHSRSRSRST	100 / 7 AA	152
Phosphosite 4:	SFRS18	Q8TF01	S561	RKKRHSRSRSPTIKA	100 / 7 AA	93
Phosphosite 5:	SFRS18	Q8TF01	S559	PKRKKRHSRSRSPTI	100 / 7 AA	93
Phosphosite 6:	SF2	Q07955	S244	YSPRHSRSRSRT___	100 / 7 AA	28
Phosphosite 7:	SFRS11	Q05519	S249	KEEKRRHSRSRSRSR	100 / 7 AA	54
Phosphosite 8:	Thsd4	Q6ZMP0	S199	QKLSSRHSRSQGASS	77 / 9 AA	112
Phosphosite 9:	ACIN1	Q9UKV3	S1327	DTKRHSRSRSRSTPV	100 / 7 AA	152
Phosphosite 10:	SFRS5	Q13243	S186	GSKRHSRSRSRSRSR	100 / 7 AA	31
Phosphosite 11:	SFRS11	Q05519	S251	EKRRHSRSRSRSRRR	100 / 7 AA	54
Phosphosite 12:	CDK13	Q14004	S422	YSSRHSRSRSRHRLS	100 / 7 AA	165
Phosphosite 13:	NKTR	P30414	S545	ASKSSSHSRSRSKSR	88 / 9 AA	166
Phosphosite 14:	TrpC5	Q9UL62	S193	EVDSLRHSRSRLNIY	87 / 8 AA	111
Phosphosite 15:	TRPC4	Q9UBN4	S193	DVDSLRHSRSRLNIY	87 / 8 AA	112
Phosphosite 16:	SFRS18	Q8TF01	S781	KKPKHSRSRSVEKSQ	85 / 7 AA	93
Phosphosite 17:	PRPF38B	Q5VTL8	S426	SKKEKKHSRSRSRER	85 / 7 AA	64
Phosphosite 18:	TrpC5	Q9UL62	S195	DSLRHSRSRLNIYKA	100 / 6 AA	111
Phosphosite 19:	TRPC4	Q9UBN4	S195	DSLRHSRSRLNIYKA	100 / 6 AA	112
Phosphosite 20:	SFRS18	Q8TF01	S779	KAKKPKHSRSRSVEK	75 / 8 AA	93