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:	S233
P-Site Sequence:	SEASKSRSRHSHSGE
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	S233	SEASKSRSRHSHSGE	100 / 9 AA	165
Phosphosite 1:	CDK13	Q14004	S231	GGSEASKSRSRHSHS	100 / 7 AA	165
Phosphosite 2:	RSRC2	Q7L4I2	S184	RSRSRSRSRHRHRTR	77 / 9 AA	51
Phosphosite 3:	SFRS4	Q08170	S198	HSRSRSRSRHSRKSR	77 / 9 AA	57
Phosphosite 4:	SRRM2	Q9UQ35	S831	KQKSKTPSRQSHSSS	66 / 9 AA	300
Phosphosite 5:	CDK13	Q14004	S433	HRLSRSRSRHSSISP	87 / 8 AA	165
Phosphosite 6:	CROP	O95232	S297	RKRSRSRSRHSSRTS	87 / 8 AA	51
Phosphosite 7:	CDK13	Q14004	S236	SKSRSRHSHSGEERA	100 / 6 AA	165
Phosphosite 8:	CDX4	O14627	S152	KASSPSRSRHSPYAW	87 / 8 AA	30
Phosphosite 9:	COMMD1	Q8N668	S132	RVDGKSQSRHSAQIH	75 / 8 AA	21
Phosphosite 10:	RSRC1	Q96IZ7	T105	RSRSKSRTRRSRSRP	66 / 9 AA	39
Phosphosite 11:	CDK12	Q9NYV4	S379	KKRSSSRSRHSSISP	87 / 8 AA	164
Phosphosite 12:	ZNF265	O95218	S208	RSRSKSRSSHSRSSS	77 / 9 AA	37
Phosphosite 13:	ZRSR2	Q15696	S414	SHKRTSKSRERHNSR	85 / 7 AA	58
Phosphosite 14:	ZRSR1	Q15695	S419	SHKRTSKSRERHNSP	85 / 7 AA	58
Phosphosite 15:	CDK13	Q14004	S431	SRHRLSRSRSRHSSI	85 / 7 AA	165
Phosphosite 16:	CDK13	Q14004	S424	SRHSRSRSRHRLSRS	85 / 7 AA	165
Phosphosite 17:	CDK13	Q14004	S422	YSSRHSRSRSRHRLS	85 / 7 AA	165
Phosphosite 18:	RSRC2	Q7L4I2	S182	RIRSRSRSRSRHRHR	85 / 7 AA	51
Phosphosite 19:	SFRS4	Q08170	S196	RSHSRSRSRSRHSRK	85 / 7 AA	57
Phosphosite 20:	CROP	O95232	S295	ERRKRSRSRSRHSSR	85 / 7 AA	51