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:	S817
P-Site Sequence:	YWNPRNSSELSGLVN
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	S817	YWNPRNSSELSGLVN	100 / 9 AA	119
Phosphosite 1:	C4orf21	Q86YA3	S816	QYWNPRNSSELSGLV	100 / 8 AA	119
Phosphosite 2:	EPS8L1	Q8TE68	S495	DFQARNSSELSVKQR	87 / 8 AA	80
Phosphosite 3:	EPS8L1	Q8TE68	S494	YDFQARNSSELSVKQ	87 / 8 AA	80
Phosphosite 4:	TSFM	P43897	S167	SKGFLNSSELSGLPA	100 / 7 AA	35
Phosphosite 5:	ARID5A	Q03989	T216	QEPPRNSTEQQGLAS	66 / 9 AA	64
Phosphosite 6:	RFX7	Q2KHR2	S1291	SSDIRLSSELSGSIN	87 / 8 AA	147
Phosphosite 7:	Eps8	Q12929	S548	DFVARNNSELSVLKD	75 / 8 AA	92
Phosphosite 8:	PPM1G	O15355	T510	ICFKPRNTAELQPES	71 / 7 AA	59
Phosphosite 9:	MAGI1	Q96QZ7	S464	PFFTRNPSELKGKFI	75 / 8 AA	165
Phosphosite 10:	C11orf93	A8K830	S41	PGSPSNSSILSGSLD	77 / 9 AA	17
Phosphosite 11:	POLE	Q07864	S2080	KVTGSRNSTELSEMF	75 / 8 AA	262
Phosphosite 12:	EEPD1	Q7L9B9	S16	RSIPRDPSDLSHSRK	62 / 8 AA	62
Phosphosite 13:	POLE	Q07864	T2081	VTGSRNSTELSEMFP	75 / 8 AA	262
Phosphosite 14:	SCN8A	Q9UQD0	S478	GGSPRSSSEISKLSS	75 / 8 AA	225
Phosphosite 15:	Per2	O15055	S808	RVKPRDSSESTGSGG	66 / 9 AA	137
Phosphosite 16:	IL17B	Q9UHF5	S77	VAQLRNSSELAQRKC	85 / 7 AA	20
Phosphosite 17:	IL17B	Q9UHF5	S76	MVAQLRNSSELAQRK	85 / 7 AA	20
Phosphosite 18:	SCN8A	Q9UQD0	S477	GGGSPRSSSEISKLS	75 / 8 AA	225
Phosphosite 19:	SH3GL3	Q99963	S265	RPVKRSSSELNGVST	75 / 8 AA	39
Phosphosite 20:	p67phox	P19878	S399	LSYRPRDSNELVPLS	71 / 7 AA	60