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:	ALK4
Human P-Site:	S419
P-Site Sequence:	EIARRCNSGGVHEEY
UniProt:	P36896
Intern. Prot. ID:	IPI00005732

Protein Phosphosite Match	Human Protein Short Name	Human UniProt. ID	Phosphosite Number	Sequence	% Identity / # AA	Target Size kDa
Phosphosite 0:	ALK4	P36896	S419	EIARRCNSGGVHEEY	100 / 9 AA	57
Phosphosite 1:	FAM53A	Q6NSI3	S155	VSKRRCDSGGSATRQ	85 / 7 AA	43
Phosphosite 2:	FAM53B	Q14153	S148	VEKRRCYSGGSVQRY	85 / 7 AA	46
Phosphosite 3:	BMPR1A	P36894	T446	EMARRCITGGIVEEY	62 / 8 AA	60
Phosphosite 4:	FAM53B	Q14153	Y147	PVEKRRCYSGGSVQR	85 / 7 AA	46
Phosphosite 5:	QSOX1	O00391	S6	__MRRCNSGSGPPPS	100 / 6 AA	83
Phosphosite 6:	BMPR1B	O00238	S416	EVARRCVSGGIVEEY	75 / 8 AA	57
Phosphosite 7:	RREB1	Q92766	S1167	RSRPRANSGGVDLDS	66 / 9 AA	181
Phosphosite 8:	TGFBR1	P36897	S416	WEIARRCSIGGIHED	62 / 8 AA	56
Phosphosite 9:	PLCL2	Q9UPR0	S51	HGRARYDSGGVSNGD	71 / 7 AA	126
Phosphosite 10:	ALK7	Q8NER5	S406	WEIARRCSVGGIVEE	62 / 8 AA	55
Phosphosite 11:	EFCAB3	Q8N7B9	S231	EELKRCNSGSDSPYS	71 / 7 AA	50
Phosphosite 12:	TMEM16H	Q9HCE9	S547	GGGRRCLSGGCGAPE	85 / 7 AA	136
Phosphosite 13:	ITPR3	Q14573	S1640	EAYQRCESGGFLSKL	71 / 7 AA	304
Phosphosite 14:	GLI3	P10071	S980	VHAPRRCSDGGAHGY	62 / 8 AA	170
Phosphosite 15:	DOK3	Q7L591	S284	EAGRRCHSGEGLFAF	83 / 6 AA	53
Phosphosite 16:	COBL	O75128	S775	REFWRCNSVEKHLGR	55 / 9 AA	136
Phosphosite 17:	KRT4	P19013	S43	SGGAGRCSSGGFGSR	83 / 6 AA	57
Phosphosite 18:	RSBN1	Q5VWQ0	S93	KRQRRSSSGGSQEKR	55 / 9 AA	90
Phosphosite 19:	SNED1	Q8TER0	S846	QHGGRCESGGGAYLC	83 / 6 AA	152
Phosphosite 20:	KRT4	P19013	S44	GGAGRCSSGGFGSRS	83 / 6 AA	57