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:	MARCH-X
Human P-Site:	S268
P-Site Sequence:	VGGPRKASFRFRDED
UniProt:	Q8NA82
Intern. Prot. ID:

Protein Phosphosite Match	Human Protein Short Name	Human UniProt. ID	Phosphosite Number	Sequence	% Identity / # AA	Target Size kDa
Phosphosite 0:	MARCH-X	Q8NA82	S268	VGGPRKASFRFRDED	100 / 9 AA	91
Phosphosite 1:	TSGA10IP	Q3SY00	S105	PLLPRKPSFPFQWAW	66 / 9 AA	62
Phosphosite 2:	ZNF26	P17031	S468	KAYPRKASLQIHQKT	55 / 9 AA	61
Phosphosite 3:	MYCT1	Q8N699	S161	NSFPRKSSFRASTFH	85 / 7 AA	27
Phosphosite 4:	MYCT1	Q8N699	S160	ANSFPRKSSFRASTF	85 / 7 AA	27
Phosphosite 5:	SOCS7	O14512	S209	AGPSRKGSFKIRLSR	55 / 9 AA	54
Phosphosite 6:	DDX20	Q9UHI6	S743	RNLPRRSSFRLQTEA	55 / 9 AA	92
Phosphosite 7:	IHPK1	Q92551	S327	AVLERQASYRFYSSS	71 / 7 AA	50
Phosphosite 8:	DDX20	Q9UHI6	S742	RRNLPRRSSFRLQTE	62 / 8 AA	92
Phosphosite 9:	NOL1	P46087	S646	QQHPKKASFQKLNGI	71 / 7 AA	89
Phosphosite 10:	TRIP10	Q15642	S375	SVKPRLASFRSLRGS	85 / 7 AA	68
Phosphosite 11:	IHPK1	Q92551	Y328	VLERQASYRFYSSSL	71 / 7 AA	50
Phosphosite 12:	Cdt1	Q9H211	S246	IKTVYPASYRFRQER	83 / 6 AA	60
Phosphosite 13:	AKAP8	O43823	S125	GIQDRESSFRFQPFE	62 / 8 AA	76
Phosphosite 14:	OSBPL6	Q9BZF3	S195	VRSPRDASFHIFPST	62 / 8 AA	106
Phosphosite 15:	ADAMTS13	Q76LX8	S561	TCSPRKGSFTAGRAR	83 / 6 AA	154
Phosphosite 16:	C9	P02748	S269	ISLHGKGSFRFSYSK	83 / 6 AA	63
Phosphosite 17:	PKMYT1	Q99640	S83	QLQPRRVSFRGEASE	71 / 7 AA	55
Phosphosite 18:	CUL4A	Q13619	S10	DEAPRKGSFSALVGR	83 / 6 AA	88
Phosphosite 19:	KIAA0409	O43159	S80	KKCPKKASFASASAE	83 / 6 AA	51
Phosphosite 20:	AKAP8	O43823	S124	EGIQDRESSFRFQPF	71 / 7 AA	76