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:	S274
P-Site Sequence:	GSTSRRQSVSPPYKE
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	S274	GSTSRRQSVSPPYKE	100 / 9 AA	164
Phosphosite 1:	ST5	P78524	S30	GTLSRSQSVSPPPVL	88 / 9 AA	126
Phosphosite 2:	CDK12	Q9NYV4	S276	TSRRQSVSPPYKEPS	100 / 7 AA	164
Phosphosite 3:	PRRG4	Q9BZD6	S200	VALTRKHSVSPPPPY	66 / 9 AA	25
Phosphosite 4:	ANKRD13C	Q8N6S4	S411	FEPIRRQSLTPPPQN	75 / 8 AA	61
Phosphosite 5:	FBF1	Q8TES7	S307	GRQSRRQSVSRFFAD	100 / 7 AA	125
Phosphosite 6:	UNC80	Q8N2C7	S1790	NLASRRLSVSPSCTS	87 / 8 AA	363
Phosphosite 7:	FAM117B	Q6P1L5	S412	NNSSRSQSVSPTSFL	87 / 8 AA	62
Phosphosite 8:	Cdc25B	P30305	S353	VQNKRRRSVTPPEEQ	75 / 8 AA	65
Phosphosite 9:	TBC1D9B	Q66K14	S739	DNVVNKQSVSPPIPH	85 / 7 AA	140
Phosphosite 10:	FBXL19	Q6PCT2	S451	MDLSRRKSLTPPMLS	66 / 9 AA	74
Phosphosite 11:	PHC1	P78364	S119	QLISRSQSVSSPSAT	77 / 9 AA	106
Phosphosite 12:	TBC1D9B	Q66K14	S741	VVNKQSVSPPIPHLR	85 / 7 AA	140
Phosphosite 13:	ZNF652	Q9Y2D9	S216	TTRGRRKSVEPPKRK	66 / 9 AA	70
Phosphosite 14:	SENP6	Q9GZR1	S350	DRTNRRESISPQPAD	62 / 8 AA	126
Phosphosite 15:	PGM3	O95394	T473	DAERQAVTPPGLQEA	71 / 7 AA	60
Phosphosite 16:	SLC12A5	Q9H2X9	S27	DPESRRHSVADPRHL	66 / 9 AA	126
Phosphosite 17:	FAM83E	Q2M2I3	S319	HRVSRRRSVAPASPP	66 / 9 AA	52
Phosphosite 18:	PPARGC1A	Q9UBK2	S552	SPCRDSVSPPKSLFS	85 / 7 AA	91
Phosphosite 19:	RIZ	Q13029	T794	SGRDERETVSPPCFD	71 / 7 AA	189
Phosphosite 20:	MAEL	Q96JY0	S95	LVPKQNVSPPDMSAL	71 / 7 AA	49