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:	S464
P-Site Sequence:	GRPISPRSSVNSSYN
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	S464	GRPISPRSSVNSSYN	100 / 9 AA	91
Phosphosite 1:	MARCH-X	Q8NA82	S465	RPISPRSSVNSSYNP	100 / 8 AA	91
Phosphosite 2:	SORBS3	O60504	S138	GMPIAPRSSVDRPRD	75 / 8 AA	75
Phosphosite 3:	SAPAP2	Q9P1A6	S138	RHRCSPRSSVHSECV	77 / 9 AA	118
Phosphosite 4:	SAPAP2	Q9P1A6	S139	HRCSPRSSVHSECVM	87 / 8 AA	118
Phosphosite 5:	CATSPER1	Q8NEC5	S251	GETISPHSSVGSYQR	77 / 9 AA	90
Phosphosite 6:	ATF6B	Q99941	S172	IEPVSPCSSVNSEAS	77 / 9 AA	77
Phosphosite 7:	BAI3	O60242	S1314	DYIVMPRSSVNNQPS	66 / 9 AA	171
Phosphosite 8:	BAI3	O60242	S1315	YIVMPRSSVNNQPSM	85 / 7 AA	171
Phosphosite 9:	ERVWE1	Q9UQF0	S510	DRPASPRSDVNDIKG	85 / 7 AA	60
Phosphosite 10:	ASTN1	O14525	S379	SRVGSPRSPVNKTTL	85 / 7 AA	145
Phosphosite 11:	USP10	Q14694	S27	QFFVTPRSSVELPPY	62 / 8 AA	87
Phosphosite 12:	FOXJ3	Q9UPW0	S226	DGSDSPRSSLNNSLS	75 / 8 AA	69
Phosphosite 13:	MLLT10	P55197	S705	RGSLSPRSPVSSLQI	66 / 9 AA	109
Phosphosite 14:	ATF6B	Q99941	S173	EPVSPCSSVNSEASL	87 / 8 AA	77
Phosphosite 15:	POM121L2	Q96KW2	S652	VVQISPRSSTANFRG	85 / 7 AA	103
Phosphosite 16:	MSL1	Q68DK7	S392	ETPEKPRSSVDTPPR	71 / 7 AA	67
Phosphosite 17:	WWC1	Q8IX03	S538	MTSLSPRSSLSSPSP	66 / 9 AA	125
Phosphosite 18:	POM121L2	Q96KW2	S649	LSSVVQISPRSSTAN	100 / 6 AA	103
Phosphosite 19:	MS4A1	P11836	S7	_MTTPRNSVNGTFPA	62 / 8 AA	33
Phosphosite 20:	FOXJ3	Q9UPW0	S227	GSDSPRSSLNNSLSD	85 / 7 AA	69