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:	S581
P-Site Sequence:	DSSSSSPSRMNSEGH
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	S581	DSSSSSPSRMNSEGH	100 / 9 AA	91
Phosphosite 1:	MARCH-X	Q8NA82	S579	LVDSSSSSPSRMNSE	100 / 7 AA	91
Phosphosite 2:	WDR81	Q562E7	S281	PGSASGPSRLNSRKE	66 / 9 AA	96
Phosphosite 3:	DACH2	Q96NX9	S404	SSVSSSPSQMDHHLE	75 / 8 AA	65
Phosphosite 4:	MASTL	Q96GX5	S671	ASNNSEPSRMNMTSL	75 / 8 AA	97
Phosphosite 5:	ERBB2IP	Q96RT1	S662	NSNCSSPSRMSDSVS	85 / 7 AA	158
Phosphosite 6:	ERBB2IP	Q96RT1	S660	QNNSNCSSPSRMSDS	85 / 7 AA	158
Phosphosite 7:	SV2B	Q7L1I2	S69	KQAKMAPSRMDSLRG	71 / 7 AA	77
Phosphosite 8:	TELO2	Q9Y4R8	S690	QGPAGSPSRFNSVAG	66 / 9 AA	92
Phosphosite 9:	GOLGA4	Q13439	T33	SSNSSTPTRMRSRTS	66 / 9 AA	261
Phosphosite 10:	GNAS	P84996	S42	LLRKQCPSRLNSPAW	71 / 7 AA	68
Phosphosite 11:	ARHGEF14	O15068	S977	APTSTSPSRGNSRNI	77 / 9 AA	128
Phosphosite 12:	GOLGA4	Q13439	T31	QASSNSSTPTRMRSR	71 / 7 AA	261
Phosphosite 13:	HSFX1	Q9UBD0	T328	LYVPGSPTQMNSYGP	62 / 8 AA	47
Phosphosite 14:	factor V	P12259	S917	LPSQDTGSPSRMRPW	71 / 7 AA	252
Phosphosite 15:	CCDC50	Q8IVM0	T162	VMKEAVSTPSRMAHR	83 / 6 AA	36
Phosphosite 16:	Hoxd8	P13378	S181	DHLNQSSSPSQMFPW	85 / 7 AA	32
Phosphosite 17:	ELYS	Q8WYP5	S1898	LKVSTVTSPSRMIRK	83 / 6 AA	252
Phosphosite 18:	ELYS	Q8WYP5	S1900	VSTVTSPSRMIRKLR	83 / 6 AA	252
Phosphosite 19:	UPP1	Q16831	S61	KFVCVGGSPSRMKAF	71 / 7 AA	34
Phosphosite 20:	ARHGAP23	Q9P227	S1367	AALASRPSRMEALRL	55 / 9 AA	162