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:	T520
P-Site Sequence:	LSPIRNRTPFASAEN
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	T520	LSPIRNRTPFASAEN	100 / 9 AA	91
Phosphosite 1:	C9orf102	A4D997	T50	PRTIRDRTSFSSKLP	66 / 9 AA	61
Phosphosite 2:	SGTA	O43765	T303	RSQIRSRTPSASNDD	77 / 9 AA	34
Phosphosite 3:	TICAM-2	Q86XR7	T185	NPLPRERTPFALQTI	85 / 7 AA	27
Phosphosite 4:	IRR	P14616	T951	YGKKRNRTLYASVNP	75 / 8 AA	144
Phosphosite 5:	APC	P25054	T2760	ESSIVERTPFSSSSS	66 / 9 AA	312
Phosphosite 6:	ALX4	Q9H161	T220	KKRRNRTTFTSYQLE	75 / 8 AA	44
Phosphosite 7:	ALX4	Q9H161	T219	GKKRRNRTTFTSYQL	75 / 8 AA	44
Phosphosite 8:	ANP32B	Q92688	T15	HLELRNRTPAAVREL	75 / 8 AA	29
Phosphosite 9:	MLL2	O14686	T2462	EQLSRGQTPFAGTQD	62 / 8 AA	564
Phosphosite 10:	CNTN3	Q9P232	T637	SYSIQARTPFSVGWQ	62 / 8 AA	113
Phosphosite 11:	TUBGCP2	Q9BSJ2	T37	DLLQKNRTPYVTTTV	50 / 8 AA	103
Phosphosite 12:	AP3B1	O00203	T574	NYDIRDRTRFIRQLI	71 / 7 AA	121
Phosphosite 13:	LAMA4	Q16363	S432	KMLEEIRSRQPFFTQ	71 / 7 AA	203
Phosphosite 14:	PRRX2	Q99811	T110	KQRRNRTTFNSSQLQ	75 / 8 AA	27
Phosphosite 15:	PRRX1	P54821	T100	KQRRNRTTFNSSQLQ	75 / 8 AA	27
Phosphosite 16:	C5orf34	Q96MH7	T57	PERIRQRTHFVISTY	62 / 8 AA	73
Phosphosite 17:	PRRX2	Q99811	T109	KKQRRNRTTFNSSQL	75 / 8 AA	27
Phosphosite 18:	PRRX1	P54821	T99	RKQRRNRTTFNSSQL	75 / 8 AA	27
Phosphosite 19:	Pax6	P26367	S216	KLQRNRTSFTQEQIE	71 / 7 AA	47
Phosphosite 20:	Pax6	P26367	T215	RKLQRNRTSFTQEQI	71 / 7 AA	47