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:	S1138
P-Site Sequence:	SRDSSAASASPHQPI
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	S1138	SRDSSAASASPHQPI	100 / 9 AA	284
Phosphosite 1:	MAST4	O15021	S1140	DSSAASASPHQPIVI	100 / 7 AA	284
Phosphosite 2:	KIF26A	Q9ULI4	S1379	EQRSSPASAPPHAVN	77 / 9 AA	190
Phosphosite 3:	IRS1	P35568	S1041	ASSSSAASASPTGPQ	100 / 8 AA	132
Phosphosite 4:	MUC20	Q8N307	S180	SSESSASSDSPHPVI	77 / 9 AA	72
Phosphosite 5:	Putative uncharacterized protein DKFZp434G1729	Q8ND99	S139	SRKASAASASPRKAS	87 / 8 AA	60
Phosphosite 6:	p73	O15350	S81	QMSSRAASASPYTPE	77 / 9 AA	70
Phosphosite 7:	C13orf18	Q9H714	S114	DTTDSVGSASPHGSS	75 / 8 AA	71
Phosphosite 8:	YAF2	Q8IY57	S144	PPASSAASADQHSQS	77 / 9 AA	20
Phosphosite 9:	Cbl	P22681	T852	GPAASAATASPQLSS	75 / 8 AA	100
Phosphosite 10:	SHROOM3	Q8TF72	S975	RSPEASASASPHTPR	100 / 6 AA	217
Phosphosite 11:	SHROOM3	Q8TF72	S977	PEASASASPHTPRER	100 / 6 AA	217
Phosphosite 12:	CMYA1	Q702N8	S1246	GPQAAGASPHPHNAF	85 / 7 AA	199
Phosphosite 13:	PCNT	O95613	S3274	RRLAAAASPHSGGRA	85 / 7 AA	378
Phosphosite 14:	eEF2K	O00418	S399	SLPSSPSSATPHSQK	66 / 9 AA	82
Phosphosite 15:	C1orf195	Q5TG92	S27	RGPKSTASASPRSCL	75 / 8 AA	14
Phosphosite 16:	HERV-H_22q11.2 provirus ancestral Gag polyprotein	Q8N8A4	S185	LQFSSATSASPPAQQ	87 / 8 AA	30
Phosphosite 17:	Shb	Q15464	S156	AASSSSSSGSPHLYR	66 / 9 AA	55
Phosphosite 18:	MUC20	Q8N307	S199	ASESSASSDGPHPVI	66 / 9 AA	72