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:	S402
P-Site Sequence:	NAKKSPLSWDTKSEP
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	S402	NAKKSPLSWDTKSEP	100 / 9 AA	91
Phosphosite 1:	USP17L1P	Q7RTZ2	S44	LPEKSPLSSETRVDL	66 / 9 AA	60
Phosphosite 2:	USP17L8	P0C7I0	S44	LPEKSPLSSETRVDL	66 / 9 AA	60
Phosphosite 3:	USP17L7	P0C7H9	S44	LSEKSPLSSETRFDL	66 / 9 AA	60
Phosphosite 4:	USP17L4	A6NCW7	S44	LPEKSPLSSETRVDL	66 / 9 AA	60
Phosphosite 5:	USP17L3	A6NCW0	S44	LPEKSPLSSETRVDL	66 / 9 AA	60
Phosphosite 6:	FLJ14525	Q9H425	S124	DEHSAPFSWETKSQM	62 / 8 AA	36
Phosphosite 7:	MARCH-X	Q8NA82	T405	KSPLSWDTKSEPRQE	100 / 6 AA	91
Phosphosite 8:	ABCA1	O95477	S1845	NRFVSPLSWDLVGRN	100 / 6 AA	254
Phosphosite 9:	BLVRA	P53004	S214	TEKKSPLSWIEEKGP	100 / 6 AA	33
Phosphosite 10:	MARCH-X	Q8NA82	S399	GSENAKKSPLSWDTK	100 / 6 AA	91
Phosphosite 11:	BLVRA	P53004	S211	CLETEKKSPLSWIEE	100 / 6 AA	33
Phosphosite 12:	RP11-345P4.4	P0CK96	S28	PKGRSPLSWGSLFGH	62 / 8 AA	44
Phosphosite 13:	ANK2	Q01484	S2504	SSGKSPLSPDTPSSE	87 / 8 AA	430
Phosphosite 14:	GCLC	P48506	S11	LSQGSPLSWEETKRH	83 / 6 AA	73
Phosphosite 15:	SCIN	Q9Y6U3	S156	RATEVPLSWDSFNKG	83 / 6 AA	80
Phosphosite 16:	IDUA	P35475	S234	TPPRSPLSWGLLRHC	71 / 7 AA	73
Phosphosite 17:	NMB	P08949	S28	AAGVAPLSWDLPEPR	83 / 6 AA	13
Phosphosite 18:	C1orf61	Q13536	S139	ALGLAWLSWETKKKN	83 / 6 AA	17
Phosphosite 19:	SI1	Q9P2N6	S186	RQALASVSWDTKLIQ	62 / 8 AA	96
Phosphosite 20:	METTL7A	Q9H8H3	S230	QHIQAPLSWELVRPH	57 / 7 AA	28