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:	C4orf31
Human P-Site:	Y557
P-Site Sequence:	HGGHSVKYQSKVVKT
UniProt:	Q8TB73
Intern. Prot. ID:

Protein Phosphosite Match	Human Protein Short Name	Human UniProt. ID	Phosphosite Number	Sequence	% Identity / # AA	Target Size kDa
Phosphosite 0:	C4orf31	Q8TB73	Y557	HGGHSVKYQSKVVKT	100 / 9 AA	65
Phosphosite 1:	HP	P00738	Y50	YVEHSVRYQCKNYYK	75 / 8 AA	45
Phosphosite 2:	C4orf31	Q8TB73	S559	GHSVKYQSKVVKTRK	100 / 7 AA	65
Phosphosite 3:	C4orf31	Q8TB73	S554	VIGHGGHSVKYQSKV	100 / 6 AA	65
Phosphosite 4:	RIF1	Q5UIP0	Y776	FSPYNIKYQPKVKSP	55 / 9 AA	274
Phosphosite 5:	STX1A	Q16623	Y257	DTKKAVKYQSKARRK	75 / 8 AA	33
Phosphosite 6:	STX1B	P61266	Y256	DTKKAVKYQSKARRK	75 / 8 AA	33
Phosphosite 7:	STX1A	Q16623	S259	KKAVKYQSKARRKKI	85 / 7 AA	33
Phosphosite 8:	STX1B	P61266	S258	KKAVKYQSKARRKKI	85 / 7 AA	33
Phosphosite 9:	FADS1	O60427	Y414	CAKHGIEYQSKPLLS	62 / 8 AA	52
Phosphosite 10:	STX2	P32856	Y256	ETKKAIKYQSKARRK	62 / 8 AA	33
Phosphosite 11:	STX2	P32856	S258	KKAIKYQSKARRKKW	71 / 7 AA	33
Phosphosite 12:	CA5A	P35218	Y164	VHWNSVKYQNYKEAV	71 / 7 AA	35
Phosphosite 13:	XRN1	Q8IZH2	S1279	KSGFNDNSVKYQQRK	83 / 6 AA	194
Phosphosite 14:	NUP35	Q8NFH5	Y215	GNWMHIRYQSKLQAR	57 / 7 AA	35
Phosphosite 15:	VPS13C	Q709C8	Y2718	MELVLVKYQGKNWNG	83 / 6 AA	422
Phosphosite 16:	XRN1	Q8IZH2	Y1282	FNDNSVKYQQRKHDP	83 / 6 AA	194
Phosphosite 17:	NID2	Q14112	S348	SIDVSFQSKVDTKPL	71 / 7 AA	151
Phosphosite 18:	USP28	Q96RU2	Y350	PSDHSVKYGQERWFT	100 / 5 AA	122
Phosphosite 19:	USP28	Q96RU2	S347	ELLPSDHSVKYGQER	100 / 5 AA	122
Phosphosite 20:	STX3	Q13277	Y256	ETKKAVKYQSQARKK	83 / 6 AA	33