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:	S338
P-Site Sequence:	IAHRDLKSKNILVKK
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	S338	IAHRDLKSKNILVKK	100 / 9 AA	57
Phosphosite 1:	ALK2	Q04771	S339	IAHRDLKSKNILVKK	100 / 9 AA	57
Phosphosite 2:	TGFBR1	P36897	S336	IAHRDLKSKNILVKK	100 / 9 AA	56
Phosphosite 3:	BMPR1A	P36894	S365	IAHRDLKSKNILIKK	100 / 9 AA	60
Phosphosite 4:	BMPR1B	O00238	S335	IAHRDLKSKNILVKK	100 / 9 AA	57
Phosphosite 5:	ALK7	Q8NER5	S326	IAHRDIKSKNILVKK	88 / 9 AA	55
Phosphosite 6:	TGF-betaR2	P37173	S382	IVHRDLKSSNILVKN	88 / 9 AA	65
Phosphosite 7:	PINK1	Q9BXM7	S365	IAHRDLKSDNILVEL	88 / 9 AA	63
Phosphosite 8:	NEK11	Q8NG66	S161	ILHRDLKSKNVFLKN	77 / 9 AA	74
Phosphosite 9:	ActR2B	Q13705	S324	IAHRDFKSKNVLLKS	77 / 9 AA	58
Phosphosite 10:	NEK8	Q86SG6	T131	ILHRDLKTQNILLDK	77 / 9 AA	75
Phosphosite 11:	NEK3	P51956	S130	VLHRDIKSKNIFLTQ	77 / 9 AA	58
Phosphosite 12:	ActR2	P27037	S325	ISHRDIKSKNVLLKN	77 / 9 AA	58
Phosphosite 13:	BRAF	P15056	S579	IIHRDLKSNNIFLHE	77 / 9 AA	84
Phosphosite 14:	A-Raf	P10398	S432	IIHRDLKSNNIFLHE	77 / 9 AA	68
Phosphosite 15:	MAP3K13	O43283	S282	IIHRDLKSPNVLVTH	77 / 9 AA	108
Phosphosite 16:	ALK1	P37023	S333	IAHRDFKSRNVLVKS	66 / 9 AA	56
Phosphosite 17:	Fyn	P06241	S393	YIHRDLRSANILVGN	77 / 9 AA	61
Phosphosite 18:	Raf1	P04049	S471	IIHRDMKSNNIFLHE	66 / 9 AA	73
Phosphosite 19:	MLTK	Q9NYL2	S136	VIHRDLKSRNVVIAA	66 / 9 AA	91
Phosphosite 20:	TESK1	Q15569	S178	VFHRDLTSKNCLVRR	77 / 9 AA	68