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:	ALK1
Human P-Site:	S333
P-Site Sequence:	IAHRDFKSRNVLVKS
UniProt:	P37023
Intern. Prot. ID:	IPI00293271

Protein Phosphosite Match	Human Protein Short Name	Human UniProt. ID	Phosphosite Number	Sequence	% Identity / # AA	Target Size kDa
Phosphosite 0:	ALK1	P37023	S333	IAHRDFKSRNVLVKS	100 / 9 AA	56
Phosphosite 1:	ActR2B	Q13705	S324	IAHRDFKSKNVLLKS	88 / 9 AA	58
Phosphosite 2:	ActR2	P27037	S325	ISHRDIKSKNVLLKN	77 / 9 AA	58
Phosphosite 3:	BMPR2	Q13873	S336	ISHRDLNSRNVLVKN	77 / 9 AA	115
Phosphosite 4:	MAP3K13	O43283	S282	IIHRDLKSPNVLVTH	77 / 9 AA	108
Phosphosite 5:	MLTK	Q9NYL2	S136	VIHRDLKSRNVVIAA	77 / 9 AA	91
Phosphosite 6:	ALK7	Q8NER5	S326	IAHRDIKSKNILVKK	66 / 9 AA	55
Phosphosite 7:	ALK2	Q04771	S339	IAHRDLKSKNILVKK	66 / 9 AA	57
Phosphosite 8:	TGFBR1	P36897	S336	IAHRDLKSKNILVKK	66 / 9 AA	56
Phosphosite 9:	ALK4	P36896	S338	IAHRDLKSKNILVKK	66 / 9 AA	57
Phosphosite 10:	BMPR1A	P36894	S365	IAHRDLKSKNILIKK	66 / 9 AA	60
Phosphosite 11:	BMPR1B	O00238	S335	IAHRDLKSKNILVKK	66 / 9 AA	57
Phosphosite 12:	TGF-betaR2	P37173	S382	IVHRDLKSSNILVKN	66 / 9 AA	65
Phosphosite 13:	DLK	Q12852	S239	IIHRDLKSPNMLITY	66 / 9 AA	93
Phosphosite 14:	IRAK4	Q9NWZ3	S314	HIHRDIKSANILLDE	66 / 9 AA	52
Phosphosite 15:	AMHR2	Q16671	S336	IAHRDLSSQNVLIRE	66 / 9 AA	63
Phosphosite 16:	NEK11	Q8NG66	S161	ILHRDLKSKNVFLKN	66 / 9 AA	74
Phosphosite 17:	IRAK1	P51617	S343	LIHGDIKSSNVLLDE	75 / 8 AA	77
Phosphosite 18:	NEK3	P51956	S130	VLHRDIKSKNIFLTQ	55 / 9 AA	58
Phosphosite 19:	TOP1MT	Q969P6	S516	KAQGDGKSRSVLEKK	75 / 8 AA	70
Phosphosite 20:	PINK1	Q9BXM7	S365	IAHRDLKSDNILVEL	66 / 9 AA	63