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:	CDK12
Human P-Site:	S375
P-Site Sequence:	SHSKKKRSSSRSRHS
UniProt:	Q9NYV4
Intern. Prot. ID:	IPI00021175

Protein Phosphosite Match	Human Protein Short Name	Human UniProt. ID	Phosphosite Number	Sequence	% Identity / # AA	Target Size kDa
Phosphosite 0:	CDK12	Q9NYV4	S375	SHSKKKRSSSRSRHS	100 / 9 AA	164
Phosphosite 1:	CDK12	Q9NYV4	S376	HSKKKRSSSRSRHSS	100 / 8 AA	164
Phosphosite 2:	SON	P18583	S1909	RERKRKRSSSRDNRK	87 / 8 AA	264
Phosphosite 3:	RIN2	Q8WYP3	S484	IKSKKKRSSSFVLPK	100 / 7 AA	100
Phosphosite 4:	SCAF1	Q9H7N4	S647	SKKKKKRSRSRGEKR	77 / 9 AA	139
Phosphosite 5:	BCLAF1	Q9NYF8	Y34	SHSRKKRYSSRSRSR	77 / 9 AA	106
Phosphosite 6:	DHX8	Q14562	S177	RTKKKKRSRSRDRNR	87 / 8 AA	139
Phosphosite 7:	PHRF1	Q9P1Y6	S1114	RKKKKRRSASRPRGR	66 / 9 AA	179
Phosphosite 8:	CDK12	Q9NYV4	S377	SKKKRSSSRSRHSSI	100 / 7 AA	164
Phosphosite 9:	BCLAF1	Q9NYF8	S35	HSRKKRYSSRSRSRT	87 / 8 AA	106
Phosphosite 10:	ARGLU1	Q9NWB6	S25	SKHNKKRSRSRSRSR	77 / 9 AA	33
Phosphosite 11:	PRPF4B	Q13523	S184	KITTKKRSKSRSKER	87 / 8 AA	117
Phosphosite 12:	TTF1	Q15361	S226	SKKKKKKSSNREYET	75 / 8 AA	103
Phosphosite 13:	ZNF265	O95218	S259	RGSKSRSSSRSHRGS	87 / 8 AA	37
Phosphosite 14:	HERV-F(c)2_7q36.2 provirus ancestral Env polyprotein	P60608	S523	QTLKKKKSSKRS___	77 / 9 AA	58
Phosphosite 15:	MCRS1	Q96EZ8	S48	TIPKRRSSSRFIKRK	85 / 7 AA	52
Phosphosite 16:	MCRS1	Q96EZ8	S47	GTIPKRRSSSRFIKR	85 / 7 AA	52
Phosphosite 17:	SON	P18583	S1910	ERKRKRSSSRDNRKT	85 / 7 AA	264
Phosphosite 18:	ZNF265	O95218	S258	SRGSKSRSSSRSHRG	87 / 8 AA	37
Phosphosite 19:	C11orf63	Q6NUN7	S640	GKKHKKRSSSKNTKL	75 / 8 AA	89
Phosphosite 20:	C11orf63	Q6NUN7	S641	KKHKKRSSSKNTKLK	75 / 8 AA	89