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:	S260
P-Site Sequence:	SSGGRRKSASATSSS
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	S260	SSGGRRKSASATSSS	100 / 9 AA	165
Phosphosite 1:	IQCE	Q6IPM2	S638	AASTRRRSASATHGD	87 / 8 AA	77
Phosphosite 2:	C16orf87	Q6PH81	S105	RGRGRPKSASAKKHE	87 / 8 AA	18
Phosphosite 3:	CDK13	Q14004	S262	GGRRKSASATSSSSS	100 / 7 AA	165
Phosphosite 4:	MAST3	O60307	S1180	PKTGRRKSTSSIPPS	66 / 9 AA	143
Phosphosite 5:	EPHX3	Q9H6B9	S61	GCCGRRRSASPACLS	66 / 9 AA	41
Phosphosite 6:	exonuclease 1	Q9UQ84	S637	LQQFRRKSDSPTSLP	75 / 8 AA	94
Phosphosite 7:	MAST4	O15021	S1373	YRSGRRKSAGNIPLS	85 / 7 AA	284
Phosphosite 8:	LDHD	Q86WU2	S235	VSLGRRKSAAGYNLT	75 / 8 AA	55
Phosphosite 9:	NPAT	Q14207	S213	MSPGRRKSESQRKST	85 / 7 AA	154
Phosphosite 10:	SKIL	P12757	S490	NSTSKRKSESATCNL	66 / 9 AA	77
Phosphosite 11:	HIRIP3	Q9BW71	S269	RSNGRRKSAREERSC	100 / 6 AA	62
Phosphosite 12:	C1orf131	Q8NDD1	S86	LIRGQRKSASSFFKE	75 / 8 AA	33
Phosphosite 13:	USP40	Q9NVE5	S1199	RALGRRKSQEALHEQ	75 / 8 AA	140
Phosphosite 14:	SCUBE1	Q8IWY4	S862	LVMRKSASPTSITTY	85 / 7 AA	108
Phosphosite 15:	OR9A4	Q8NGU2	S237	SSSGRRKSFSTCASH	75 / 8 AA	36
Phosphosite 16:	HIST3H3	Q16695	S29	ATKVARKSAPATGGV	85 / 7 AA	16
Phosphosite 17:	FGF17	O60258	S74	QVTGRRISATAEDGN	75 / 8 AA	25
Phosphosite 18:	ephexin1	Q8N5V2	S16	LEKTRRKSASDQWNT	100 / 6 AA	82
Phosphosite 19:	C12orf26	Q8N6Q8	S67	AALRKSASETEALPS	85 / 7 AA	68
Phosphosite 20:	UNC5A	Q6ZN44	S232	NIVARRRSASAAVIV	66 / 9 AA	93