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:	S63
P-Site Sequence:	SFERSRFSSRSSSKQ
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	S63	SFERSRFSSRSSSKQ	100 / 9 AA	91
Phosphosite 1:	MARCH-X	Q8NA82	S64	FERSRFSSRSSSKQS	100 / 8 AA	91
Phosphosite 2:	FIZ1	Q96SL8	S117	LVCELRFSSRSSLGR	100 / 7 AA	52
Phosphosite 3:	FIZ1	Q96SL8	S118	VCELRFSSRSSLGRH	100 / 7 AA	52
Phosphosite 4:	C1orf63	Q9BUV0	S54	SRVSSRFSSRSRRSK	100 / 7 AA	34
Phosphosite 5:	Proline-rich protein 35	P0CG20	S358	PSLTRFCSRSSLPTG	75 / 8 AA
Phosphosite 6:	C1orf63	Q9BUV0	S55	RVSSRFSSRSRRSKS	100 / 7 AA	34
Phosphosite 7:	SLC12A6	Q9UHW9	S46	SSSRVRFSSRESVPE	77 / 9 AA	128
Phosphosite 8:	CROP	O95232	S300	SRSRSRHSSRTSDRR	77 / 9 AA	51
Phosphosite 9:	KRT75	O95678	S33	AAGRSRFSSVSVARS	87 / 8 AA	60
Phosphosite 10:	FAM59A	Q9H706	S220	FQCKGRFSTRSPLEL	55 / 9 AA	97
Phosphosite 11:	MX2	P20592	S17	YRRRSQFSSRKYLKK	85 / 7 AA	82
Phosphosite 12:	DHX38	Q92620	S179	ERDRSRHSSRSERDG	87 / 8 AA	141
Phosphosite 13:	GOLGA8C	A6NN73	S192	KKAERFSSRSKARME	100 / 6 AA	67
Phosphosite 14:	GOLGA8C	A6NN73	S191	KKKAERFSSRSKARM	100 / 6 AA	67
Phosphosite 15:	TEC	P42680	S544	FNYSRFSSKSDVWSF	85 / 7 AA	74
Phosphosite 16:	RBMXL3	Q8N7X1	S108	SGSRSRFSHRTRGGG	75 / 8 AA	114
Phosphosite 17:	SLIT3	O75094	S493	SGSEDYRSRFSSECF	100 / 6 AA	168
Phosphosite 18:	CACNG8	Q8WXS5	S277	YRRRSRSSSRSSEPS	88 / 9 AA	43
Phosphosite 19:	Tiam1	Q13009	S694	SKRRSRFSSLWGLDT	100 / 6 AA	178
Phosphosite 20:	TEC	P42680	S543	VFNYSRFSSKSDVWS	85 / 7 AA	74