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:	S66
P-Site Sequence:	RSRFSSRSSSKQSSS
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	S66	RSRFSSRSSSKQSSS	100 / 9 AA	91
Phosphosite 1:	MARCH-X	Q8NA82	S67	SRFSSRSSSKQSSSE	100 / 8 AA	91
Phosphosite 2:	MARCH-X	Q8NA82	S68	RFSSRSSSKQSSSEE	100 / 7 AA	91
Phosphosite 3:	APC	P25054	S2766	RTPFSSSSSSKHSSP	77 / 9 AA	312
Phosphosite 4:	DUSP11	O75319	S21	RRDFSGRSSAKKKGG	66 / 9 AA	39
Phosphosite 5:	ZYX	Q15942	S185	ATPFSSKSSTKPAAG	66 / 9 AA	61
Phosphosite 6:	DOT1L	Q8TEK3	S730	CGVLSRPSSKQNTPQ	85 / 7 AA	185
Phosphosite 7:	DOT1L	Q8TEK3	S731	GVLSRPSSKQNTPQY	85 / 7 AA	185
Phosphosite 8:	MARCH-X	Q8NA82	S64	FERSRFSSRSSSKQS	100 / 7 AA	91
Phosphosite 9:	LHX4	Q969G2	S238	VKRSRGSSKQEKESS	85 / 7 AA	43
Phosphosite 10:	LHX4	Q969G2	S237	SVKRSRGSSKQEKES	85 / 7 AA	43
Phosphosite 11:	C15orf24	Q9NPA0	S222	TRLFSSKSSGKSSSG	75 / 8 AA	26
Phosphosite 12:	TTC14	Q96N46	S524	RRHSSRASSNQIDQN	75 / 8 AA	88
Phosphosite 13:	SMTN	P53814	S712	QTKTFSSSSSSKKMG	87 / 8 AA	100
Phosphosite 14:	APC	P25054	S2765	ERTPFSSSSSSKHSS	87 / 8 AA	312
Phosphosite 15:	ARRDC2	Q8TBH0	S314	LHPFGSRSSSVGSHA	85 / 7 AA	44
Phosphosite 16:	SMTN	P53814	S713	TKTFSSSSSSKKMGS	77 / 9 AA	100
Phosphosite 17:	ARRDC2	Q8TBH0	S312	IPLHPFGSRSSSVGS	85 / 7 AA	44
Phosphosite 18:	FIZ1	Q96SL8	S117	LVCELRFSSRSSLGR	100 / 6 AA	52
Phosphosite 19:	FIZ1	Q96SL8	S118	VCELRFSSRSSLGRH	100 / 6 AA	52
Phosphosite 20:	FIZ1	Q96SL8	S120	ELRFSSRSSLGRHLR	100 / 6 AA	52