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:	S631
P-Site Sequence:	FTDEKETSKIKADPE
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	S631	FTDEKETSKIKADPE	100 / 9 AA	91
Phosphosite 1:	GAPDH	P04406	S83	IFQERDPSKIKWGDA	62 / 8 AA	36
Phosphosite 2:	SACS	Q9NZJ4	S2530	GQKEKLTSRIKSILN	66 / 9 AA	521
Phosphosite 3:	BAALC	Q8WXS3	S60	SVLEAEKSKIKAPTD	77 / 9 AA	19
Phosphosite 4:	CENPE	Q02224	S2557	IRLEKEISKLKQQNE	75 / 8 AA	316
Phosphosite 5:	REV3	O60673	S2265	NTPQKETSQIDGPSL	55 / 9 AA	353
Phosphosite 6:	SLC26A10	Q8NG04	T450	LGEGEKETSKPDGPM	100 / 6 AA	60
Phosphosite 7:	SLC26A10	Q8NG04	S451	GEGEKETSKPDGPMV	100 / 6 AA	60
Phosphosite 8:	SACS	Q9NZJ4	T2529	FGQKEKLTSRIKSIL	75 / 8 AA	521
Phosphosite 9:	Nav3	Q8IVL0	S80	KAKEKEDSKIYTDWA	85 / 7 AA	256
Phosphosite 10:	MYCBP2	O75592	S886	ERGEKDASKITTYPP	71 / 7 AA	510
Phosphosite 11:	ANKRD26	Q9UPS8	S1537	KDLESELSKIKTSQE	66 / 9 AA	196
Phosphosite 12:	ZC3H6	P61129	T180	QYRQAKETSNIALGS	83 / 6 AA	132
Phosphosite 13:	CEP290	O15078	S748	DHLEKETSLLRQSEG	62 / 8 AA	290
Phosphosite 14:	EHHADH	Q08426	S349	SVLEKEASKMQQSGH	71 / 7 AA	79
Phosphosite 15:	C14orf70	Q86TU6	T35	RWRINMETSKIILEK	83 / 6 AA	12
Phosphosite 16:	KIF3C	O14782	S291	GERPKEASKINLSLS	71 / 7 AA	89
Phosphosite 17:	NRAGE	Q9Y5V3	S643	LRSYHETSKMKVLRF	71 / 7 AA	86
Phosphosite 18:	LARS	Q9P2J5	S42	SNLEKQTSKGKYFVT	75 / 8 AA	134
Phosphosite 19:	MAGEB18	Q96M61	S280	PRAHAETSKMKVLEF	71 / 7 AA	39
Phosphosite 20:	MAGEB10	Q96LZ2	S284	PRAHAETSKMKVLEF	71 / 7 AA	39