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:	S297
P-Site Sequence:	DTEEETQSEECLWVG
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	S297	DTEEETQSEECLWVG	100 / 9 AA	91
Phosphosite 1:	EEFSEC	P57772	S127	TKGMQTQSAECLVIG	75 / 8 AA	65
Phosphosite 2:	DCDC2B	A2VCK2	T312	ADDEDTQTEEPLDQR	66 / 9 AA	38
Phosphosite 3:	KIAA1602	Q9HCH0	S1095	GRREETPSEDSLAEP	66 / 9 AA	139
Phosphosite 4:	EXPH5	Q8NEV8	S1525	QLGEETQSDEPNLES	85 / 7 AA	223
Phosphosite 5:	RECQL5	O94762	T821	HSPAPPQTEECLRER	83 / 6 AA	109
Phosphosite 6:	PARP8	Q8N3A8	S373	PCPAAVKSEECLTLK	71 / 7 AA	96
Phosphosite 7:	PEG3	Q9GZU2	S1075	TDGEETHSEETHGQE	85 / 7 AA	181
Phosphosite 8:	NOBOX	O60393	T126	SAPHAQDTQSEELPP	71 / 7 AA	74
Phosphosite 9:	ANKRD26	Q9UPS8	S694	TQSSETASEDCELPH	71 / 7 AA	196
Phosphosite 10:	NOBOX	O60393	S128	PHAQDTQSEELPPSC	71 / 7 AA	74
Phosphosite 11:	RTEL1	Q9NZ71	S534	SAFDRRFSEECLSSL	100 / 5 AA	152
Phosphosite 12:	BAG1	Q99933	S107	WSEEATQSEEATQGE	85 / 7 AA	39
Phosphosite 13:	N6AMT2	Q8WVE0	S146	IADPPYLSEECLRKT	100 / 5 AA	25
Phosphosite 14:	IKZF1	Q13422	T61	ASNVKVETQSDEENG	83 / 6 AA	58
Phosphosite 15:	KRTHA5	Q92764	S292	EDWLDTQSEELNQQV	83 / 6 AA	50
Phosphosite 16:	SNX24	Q9Y343	S122	GSFDETESEESSKLS	62 / 8 AA	20
Phosphosite 17:	DENND3	A2RUS2	T432	FAQMDLDTQSEEDRI	83 / 6 AA	136
Phosphosite 18:	KRTHA5	Q92764	T290	DAEDWLDTQSEELNQ	83 / 6 AA	50
Phosphosite 19:	DENND3	A2RUS2	S434	QMDLDTQSEEDRING	83 / 6 AA	136
Phosphosite 20:	BAG1	Q99933	T105	ATWSEEATQSEEATQ	85 / 7 AA	39