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:	C4orf21
Human P-Site:	S775
P-Site Sequence:	LGKKHLISKDTEAHI
UniProt:	Q86YA3
Intern. Prot. ID:

Protein Phosphosite Match	Human Protein Short Name	Human UniProt. ID	Phosphosite Number	Sequence	% Identity / # AA	Target Size kDa
Phosphosite 0:	C4orf21	Q86YA3	S775	LGKKHLISKDTEAHI	100 / 9 AA	119
Phosphosite 1:	SON	P18583	S1676	PSNNNLVSKDTEEPL	66 / 9 AA	264
Phosphosite 2:	CD2AP	Q9Y5K6	S300	GEIIHLISKETGEAG	85 / 7 AA	71
Phosphosite 3:	BCORL2	Q8N888	S112	CKTKHLISQDLRQGF	85 / 7 AA	16
Phosphosite 4:	CP	P00450	S46	HGEKKLISVDTEHSN	77 / 9 AA	122
Phosphosite 5:	ZBTB25	P24278	T332	VSLISKDTEPVELNC	100 / 6 AA	49
Phosphosite 6:	C4orf21	Q86YA3	T778	KHLISKDTEAHISEP	100 / 6 AA	119
Phosphosite 7:	IMPG1	Q17R60	S360	TDLKRLISKALEEEQ	66 / 9 AA	89
Phosphosite 8:	FHL5	Q5TD97	S144	IGTKPLISKESGNYC	62 / 8 AA	33
Phosphosite 9:	PRSS27	Q9BQR3	S196	PKCNLLYSKDTEFGY	85 / 7 AA	32
Phosphosite 10:	KIAA0556	O60303	S54	RILKHLKSKDPVQLR	85 / 7 AA	181
Phosphosite 11:	FMN1	Q68DA7	S1023	SEFEYLFSKDTTQQK	71 / 7 AA	158
Phosphosite 12:	CEP350	Q5VT06	S2671	KENKDLISDATEKVS	66 / 9 AA	351
Phosphosite 13:	C20orf152	Q96M20	S271	FSYGQLISKDFGESP	83 / 6 AA	67
Phosphosite 14:	SgK307	Q8IWB6	S1389	EDSSMLLSKETEDLG	71 / 7 AA	168
Phosphosite 15:	FLI1	Q01543	S251	LGGAQTISKNTEQRP	62 / 8 AA	51
Phosphosite 16:	RAI14	Q9P0K7	S760	NLKEHLASKEVEVAK	62 / 8 AA	110
Phosphosite 17:	VPRBP	Q9Y4B6	S860	LIRNHLISKGLGETA	71 / 7 AA	169
Phosphosite 18:	CCDC147	Q5T655	S739	TLQKRLISKTEEVVE	66 / 9 AA	103
Phosphosite 19:	POLG2	Q9UHN1	S457	NGLIHLRSRDTTMKE	71 / 7 AA	55
Phosphosite 20:	SON	P18583	T1679	NNLVSKDTEEPLPVK	83 / 6 AA	264