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:	S393
P-Site Sequence:	TEKDRGGSENAKKSP
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	S393	TEKDRGGSENAKKSP	100 / 9 AA	91
Phosphosite 1:	RYR2	Q92736	S4537	ELPTRSSSENAKVTS	75 / 8 AA	565
Phosphosite 2:	CDK13	Q14004	S226	RDGQRGGSEASKSRS	66 / 9 AA	165
Phosphosite 3:	AKT1	P31749	S396	KQRLGGGSEDAKEIM	85 / 7 AA	56
Phosphosite 4:	PHRF1	Q9P1Y6	S73	DLEDRSGSEDSEDDG	62 / 8 AA	179
Phosphosite 5:	WDR62	O43379	S1134	KLMDRGGSQPRAGTG	83 / 6 AA	166
Phosphosite 6:	PHRF1	Q9P1Y6	S71	EEDLEDRSGSEDSED	71 / 7 AA	179
Phosphosite 7:	WHRN	Q9P202	S160	GFSIRGGSEHGVGIY	71 / 7 AA	97
Phosphosite 8:	GPR156	Q8NFN8	S520	LLPDRGGSDPQRQRH	83 / 6 AA	89
Phosphosite 9:	UBTF	P17480	S404	QEGGKGGSEKPKRPV	62 / 8 AA	89
Phosphosite 10:	SFRS4	Q08170	S431	QREGRGESENAGTNQ	85 / 7 AA	57
Phosphosite 11:	RPL23	P62829	S10	KRGRGGSSGAKFRIS	75 / 8 AA	15
Phosphosite 12:	ANKRD26	Q9UPS8	S539	EEQEREGSENNQPQV	71 / 7 AA	196
Phosphosite 13:	C2orf78	A6NCI8	S403	GQEEQPGSENANLRN	55 / 9 AA	97
Phosphosite 14:	RPL23	P62829	S9	SKRGRGGSSGAKFRI	66 / 9 AA	15
Phosphosite 15:	FLJ37538	Q6ZVC0	S701	HHGDRGGSRTALPIP	75 / 8 AA	88
Phosphosite 16:	C5orf5	Q9NYF5	S408	PCSDRGDSEDGCLER	62 / 8 AA	105
Phosphosite 17:	HNRNPM	P52272	S432	HGMDRVGSEIERMGL	55 / 9 AA	78
Phosphosite 18:	ASTN1	O14525	S290	GMDLTPGSDNAKLSL	83 / 6 AA	145
Phosphosite 19:	RYR2	Q92736	S4536	KELPTRSSSENAKVT	71 / 7 AA	565
Phosphosite 20:	VAT1	Q99536	S267	VMDPLGGSDTAKGYN	71 / 7 AA	42