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:	MAST4
Human P-Site:	S274
P-Site Sequence:	PSASAHFSFARSLNR
UniProt:	O15021
Intern. Prot. ID:	IPI00307611

Protein Phosphosite Match	Human Protein Short Name	Human UniProt. ID	Phosphosite Number	Sequence	% Identity / # AA	Target Size kDa
Phosphosite 0:	MAST4	O15021	S274	PSASAHFSFARSLNR	100 / 9 AA	284
Phosphosite 1:	MAST1	Q9Y2H9	S77	PNTPAHFSFASSRRA	77 / 9 AA	171
Phosphosite 2:	CYP1B1	Q16678	S73	VGQAAHLSFARLARR	75 / 8 AA	61
Phosphosite 3:	PDXP	Q96GD0	S155	VGYDEHFSFAKLREA	71 / 7 AA	32
Phosphosite 4:	eEF2K	O00418	T262	PQAFSHFTFERSGHQ	62 / 8 AA	82
Phosphosite 5:	HECA	Q9UBI9	S286	ILSPAHFSGPRSSRY	66 / 9 AA	59
Phosphosite 6:	MAST2	Q6P0Q8	S217	PNAPAHFSFVPARRT	55 / 9 AA	196
Phosphosite 7:	PIAS3	Q9Y6X2	T161	RFEEAHFTFALTPQQ	83 / 6 AA	68
Phosphosite 8:	PPM1K	Q8N3J5	S360	KNSEINFSFSRSFAS	71 / 7 AA	41
Phosphosite 9:	SHISA3	A0PJX4	S179	GGSIRRFSFARAEPG	71 / 7 AA	26
Phosphosite 10:	GART	P22102	S802	GSLTNHFSFEKKKAR	50 / 8 AA	108
Phosphosite 11:	PPM1K	Q8N3J5	S362	SEINFSFSRSFASSG	71 / 7 AA	41
Phosphosite 12:	AMZ2	Q86W34	S201	TDGVGIFSFARYGSD	100 / 5 AA	41
Phosphosite 13:	SORBS2	O94875	T630	DFDHFSFTSSESFYG	71 / 7 AA	72
Phosphosite 14:	C3orf59	Q8IYB1	S290	KDNEWRLSFARSEVQ	71 / 7 AA	56
Phosphosite 15:	CD109	Q6YHK3	S293	INGSANFSFNDEEMK	83 / 6 AA	162
Phosphosite 16:	ZNF788	Q6ZQV5	S596	KECGKVFSFSRSFRR	83 / 6 AA	72
Phosphosite 17:	SORBS2	O94875	S628	ESDFDHFSFTSSESF	62 / 8 AA	72
Phosphosite 18:	C9orf102	A4D997	S35	SLSVSHFSFSKQSHR	57 / 7 AA	61
Phosphosite 19:	TUBGCP6	Q96RT7	S733	EELDDDFSYARELRD	57 / 7 AA	200
Phosphosite 20:	USP34	Q70CQ2	S2108	EKVNTHFSFPLRLDM	57 / 7 AA	404