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:	S504
P-Site Sequence:	DDITDMISESKMDNE
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	S504	DDITDMISESKMDNE	100 / 9 AA	119
Phosphosite 1:	C4orf21	Q86YA3	S506	ITDMISESKMDNESL	100 / 7 AA	119
Phosphosite 2:	COL24A1	Q17RW2	S357	SVTTHRISEAKMNTK	66 / 9 AA	175
Phosphosite 3:	ZZEF1	O43149	S173	PGFTDIFSESKEGLD	75 / 8 AA	331
Phosphosite 4:	SAR1A	Q9NR31	S143	IDRTDAISEEKLREI	66 / 9 AA	22
Phosphosite 5:	NRAP	Q86VF7	S1200	KKASELISESKYRQH	62 / 8 AA	197
Phosphosite 6:	TAGLN3	Q9UI15	S83	PIPKISESKMAFKQM	85 / 7 AA	22
Phosphosite 7:	TAGLN3	Q9UI15	S81	QEPIPKISESKMAFK	85 / 7 AA	22
Phosphosite 8:	ELF1	P32519	T62	EEPNDMITESSLDVA	62 / 8 AA	67
Phosphosite 9:	KIAA1109	Q2LD37	S2337	TVATDMLSEHPLLSE	83 / 6 AA	555
Phosphosite 10:	NEB	P20929	S5227	KDVKDMVSEKKYKIQ	71 / 7 AA	773
Phosphosite 11:	CSNK1E	P49674	S229	RQKYERISEKKMSTP	62 / 8 AA	47
Phosphosite 12:	CSNK1D	P48730	S229	RQKYERISEKKMSTP	62 / 8 AA	47
Phosphosite 13:	RP1-199H16.1	Q5TG08	S466	PTYTDVISETLCSMK	71 / 7 AA	75
Phosphosite 14:	NDC80	O14777	T494	EQLNAMITESKRSVR	83 / 6 AA	74
Phosphosite 15:	hnRNP K	P61978	S214	KIILDLISESPIKGR	62 / 8 AA	51
Phosphosite 16:	PLCB3	Q01970	S1107	RKRHNSISEAKMRDK	62 / 8 AA	139
Phosphosite 17:	ZNF607	Q96SK3	S88	DSRCEIISDGKMQLY	50 / 8 AA	81
Phosphosite 18:	GBF1	Q92538	T1121	CDPEKMITESKFLQL	71 / 7 AA	206
Phosphosite 19:	NDC80	O14777	S496	LNAMITESKRSVRTL	83 / 6 AA	74
Phosphosite 20:	ETAA1	Q9NY74	S223	YDFTQMISETEILSN	55 / 9 AA	103