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:	S272
P-Site Sequence:	SSCEELNSEMTEHFP
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	S272	SSCEELNSEMTEHFP	100 / 9 AA	119
Phosphosite 1:	AGBL1	Q96MI9	S328	KLGDDLNSEKTQYAN	55 / 9 AA	120
Phosphosite 2:	MYOC	Q99972	S217	LAFQELKSELTEVPA	66 / 9 AA	57
Phosphosite 3:	SAR1B	Q9Y6B6	S117	ESKEELDSLMTDETI	66 / 9 AA	22
Phosphosite 4:	MYH15	Q9Y2K3	S946	EEEEEINSELTARGR	75 / 8 AA	225
Phosphosite 5:	FIG4	Q92562	S191	MPLEMLKSEMTQNRQ	66 / 9 AA	104
Phosphosite 6:	LPLUNC3	P59826	S383	ESLFELNSVMTVRAQ	85 / 7 AA	50
Phosphosite 7:	ZBTB43	O43298	S187	STKDELSSQLTEHEY	55 / 9 AA	53
Phosphosite 8:	RIMBP2	O15034	S766	EDEEELYSEMQLEDG	85 / 7 AA	116
Phosphosite 9:	NACAD	O15069	S466	SQRQELISEVTEEGL	66 / 9 AA	161
Phosphosite 10:	UNC119	Q13432	S205	PLSEELISEMIRHPY	75 / 8 AA	27
Phosphosite 11:	RIMBP2	O15034	Y765	EEDEEELYSEMQLED	85 / 7 AA	116
Phosphosite 12:	PIST	Q9HD26	S103	AQLVDLKSELTETQA	62 / 8 AA	51
Phosphosite 13:	GDE	P35573	S383	KRMEELNSEKHRLIN	85 / 7 AA	175
Phosphosite 14:	ABCD1	P33897	S379	KKEEELVSERTEAFT	77 / 9 AA	83
Phosphosite 15:	CDK5RAP2	Q96SN8	S339	KKVEELNSEIEKLSA	85 / 7 AA	215
Phosphosite 16:	PCBP1	Q15365	S85	KLEEDINSSMTNSTA	62 / 8 AA	37
Phosphosite 17:	POLA2	Q14181	S229	CKIEELGSELKEHYK	66 / 9 AA	66
Phosphosite 18:	EXTL3	O43909	S105	AKRQELNSEIAKLNL	62 / 8 AA	105
Phosphosite 19:	CASC5	Q8NG31	S2076	NPVEEWDSEMRAAEK	71 / 7 AA	265
Phosphosite 20:	DNAH14	Q0VDD8	S245	TFSESLKSEKTEEPK	66 / 9 AA	400