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:	C19orf21
Human P-Site:	S228
P-Site Sequence:	AGTTPGASQAPKAFN
UniProt:	Q8IVT2
Intern. Prot. ID:	IPI00217121

Protein Phosphosite Match	Human Protein Short Name	Human UniProt. ID	Phosphosite Number	Sequence	% Identity / # AA	Target Size kDa
Phosphosite 0:	C19orf21	Q8IVT2	S228	AGTTPGASQAPKAFN	100 / 9 AA	75
Phosphosite 1:	MIDN	Q504T8	S257	TTSTPGASPAPRSRK	77 / 9 AA	49
Phosphosite 2:	STOX1	Q6ZVD7	S812	LHATPGESQEPNLSA	66 / 9 AA	111
Phosphosite 3:	TXLNA	P40222	S49	EAEGPGSSQAPRKPE	75 / 8 AA	62
Phosphosite 4:	Chk1	O14757	S366	LLGTPGSSQNPWQRL	75 / 8 AA	54
Phosphosite 5:	Chk1	O14757	S365	QLLGTPGSSQNPWQR	75 / 8 AA	54
Phosphosite 6:	SPEG	Q15772	S453	PWGTPGASQEELRAP	85 / 7 AA	354
Phosphosite 7:	ATF7IP	Q6VMQ6	S979	DDEESGASQDPKKLN	85 / 7 AA	136
Phosphosite 8:	EHMT1	Q9H9B1	S681	GRPTPGLSQGPGKET	75 / 8 AA	138
Phosphosite 9:	RGL3	Q3MIN7	S48	PAEGPGGSQAPSPIA	85 / 7 AA	78
Phosphosite 10:	SIK	P57059	S674	PAAAPGCSQAPQPAP	66 / 9 AA	85
Phosphosite 11:	TXLNA	P40222	S48	VEAEGPGSSQAPRKP	85 / 7 AA	62
Phosphosite 12:	RGS17	Q9UGC6	S16	NEGTPAVSQAPGNQR	75 / 8 AA	24
Phosphosite 13:	MAGEA13P	A6NCF6	S100	EKKDPGASQALMLEK	75 / 8 AA	38
Phosphosite 14:	SHIP	Q92835	S1112	KPKTPVSSQAPVPAK	75 / 8 AA	133
Phosphosite 15:	SHIP	Q92835	S1111	GKPKTPVSSQAPVPA	75 / 8 AA	133
Phosphosite 16:	TCOF1	Q13428	S1216	PGLTPANSQASKATP	66 / 9 AA	152
Phosphosite 17:	IRS2	Q9Y4H2	S848	PQATPGPSQAASAFG	85 / 7 AA	137
Phosphosite 18:	APC2	O95996	S1906	ALPGPGASPVPKTPA	75 / 8 AA	244
Phosphosite 19:	CREBBP	Q92793	S148	SGPTPAASQALNPQA	85 / 7 AA	265
Phosphosite 20:	SNAPC4	Q5SXM2	S1004	EGTAPAASQAPALGP	75 / 8 AA	159