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:	S756
P-Site Sequence:	ECIALDKSNTHISNS
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	S756	ECIALDKSNTHISNS	100 / 9 AA	119
Phosphosite 1:	C4orf21	Q86YA3	T758	IALDKSNTHISNSLF	100 / 7 AA	119
Phosphosite 2:	ACADVL	P49748	S52	AQLALDKSDSHPSDA	75 / 8 AA	70
Phosphosite 3:	AMDHD1	Q96NU7	S377	AAYALGKSHTHGSLE	75 / 8 AA	47
Phosphosite 4:	RUFY3	Q7L099	S291	KVDALEKSNTKLTEE	66 / 9 AA	53
Phosphosite 5:	ICA1	Q05084	S333	LSALDKGSTHTACSG	62 / 8 AA	55
Phosphosite 6:	TBC1D18	Q5R372	S108	LQLILDPSNTEISTP	75 / 8 AA	92
Phosphosite 7:	FAM75A7	Q8IWB4	S764	VNQALPVSNTHVKTS	66 / 9 AA	149
Phosphosite 8:	FAM75A3	Q5VYP0	S764	VNQALPVSNTHVKTS	66 / 9 AA	149
Phosphosite 9:	VAD1.3	Q5VVP1	S760	VNQALPVSNTHVKTS	66 / 9 AA	148
Phosphosite 10:	FAM75A5	Q5VU36	S764	VNQALPVSNTHVKTS	66 / 9 AA	149
Phosphosite 11:	FAM75A1	Q5TZJ5	S764	VNQALPVSNTHVKTS	66 / 9 AA	149
Phosphosite 12:	FAM75A2	Q5RGS2	S764	VNQALPVSNTHVKTS	66 / 9 AA	149
Phosphosite 13:	SNAP91	O60641	S113	LSNFLDKSGSHGYDM	71 / 7 AA	93
Phosphosite 14:	STXBP5L	Q9Y2K9	T179	VGTERGNTHIVNIES	57 / 7 AA	132
Phosphosite 15:	Peripherin	P41219	S466	RSELDKSSAHSY___	71 / 7 AA	54
Phosphosite 16:	Peripherin	P41219	S465	QRSELDKSSAHSY__	71 / 7 AA	54
Phosphosite 17:	POLR3A	O14802	S774	CLRELDKSNSPLTMA	55 / 9 AA	156
Phosphosite 18:	RUFY2	Q8WXA3	S282	RVDSLEKSNTKLIEE	55 / 9 AA	75
Phosphosite 19:	ZYG11B	Q9C0D3	S194	RLESLDISNTSITDI	66 / 9 AA	84
Phosphosite 20:	FEM1B	Q9UK73	S580	NKTPLDKSTTGVSEI	55 / 9 AA	70