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:	S783
P-Site Sequence:	KDTEAHISEPEDLGK
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	S783	KDTEAHISEPEDLGK	100 / 9 AA	119
Phosphosite 1:	HEMGN	Q9BXL5	S167	SETCQHVSEPEDLSP	85 / 7 AA	55
Phosphosite 2:	IRF-4	Q15306	S435	YDLPEHISNPEDYHR	85 / 7 AA	52
Phosphosite 3:	USP7	Q93009	S18	KAGEQQLSEPEDMEM	66 / 9 AA	128
Phosphosite 4:	APOF	Q13790	S251	DQKDANISQPETTKE	62 / 8 AA	33
Phosphosite 5:	C1orf144	Q7Z422	S124	LDRPTRISQPEDSRQ	62 / 8 AA	17
Phosphosite 6:	C20orf26	Q8NHU2	S339	AVQSGNVSEPEDIEK	62 / 8 AA	141
Phosphosite 7:	ZFYVE9	O95405	S426	KEKFLQISQPEDTNG	71 / 7 AA	156
Phosphosite 8:	TSHZ3	Q63HK5	S79	MDSESHISETSDRMA	66 / 9 AA	119
Phosphosite 9:	SNAP91	O60641	S401	VPSEAQISDPFAPEP	71 / 7 AA	93
Phosphosite 10:	CEP152	O94986	S1065	QKEHISDSEDKQLLE	71 / 7 AA	189
Phosphosite 11:	CEP152	O94986	S1063	DTQKEHISDSEDKQL	71 / 7 AA	189
Phosphosite 12:	PDZD2	O15018	S1780	ENLHISESQDLDDLL	71 / 7 AA	302
Phosphosite 13:	BMP3	P12645	S250	YANDAAISEPESVVS	75 / 8 AA	53
Phosphosite 14:	GNPTG	Q9UJJ9	S152	SNRLAHVSEPSTCVY	83 / 6 AA	34
Phosphosite 15:	MKL1	Q969V6	S146	SPLEARVSEPLLSAT	71 / 7 AA	99
Phosphosite 16:	RTN1	Q16799	S321	TVPTVTVSEPEDDSP	83 / 6 AA	84
Phosphosite 17:	SPG11	Q96JI7	S419	SWKIMHISEQEEPIE	71 / 7 AA	279
Phosphosite 18:	FAM135B	Q49AJ0	S778	VSAPHISSPEEAAED	62 / 8 AA	156
Phosphosite 19:	FAM135B	Q49AJ0	S777	SVSAPHISSPEEAAE	62 / 8 AA	156
Phosphosite 20:	SYNPO2	Q9UMS6	S97	GISEALISENENKNL	66 / 9 AA	118