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:	SMAD1
Human P-Site:	T370
P-Site Sequence:	HHGFHPTTVCKIPSG
UniProt:	Q15797
Intern. Prot. ID:	IPI00019549

Protein Phosphosite Match	Human Protein Short Name	Human UniProt. ID	Phosphosite Number	Sequence	% Identity / # AA	Target Size kDa
Phosphosite 0:	SMAD1	Q15797	T370	HHGFHPTTVCKIPSG	100 / 9 AA	52
Phosphosite 1:	Smad5	Q99717	T370	HHGFHPTTVCKIPSS	100 / 9 AA	52
Phosphosite 2:	Smad8	O15198	T372	QHGFHPATVCKIPSG	88 / 9 AA	52
Phosphosite 3:	Smad2	Q15796	T372	RYGWHPATVCKIPPG	77 / 9 AA	52
Phosphosite 4:	SMAD3	P84022	T330	RYGWHPATVCKIPPG	77 / 9 AA	48
Phosphosite 5:	ZNF280B	Q86YH2	T373	HTAQEPSTVCKICEL	85 / 7 AA	62
Phosphosite 6:	KRTAP9-3	Q9BYQ3	T109	RRTCYHPTSVCLPGC	71 / 7 AA	17
Phosphosite 7:	DDA1	Q9BW61	S23	FSRFHADSVCKASNR	62 / 8 AA	12
Phosphosite 8:	PRMT2	P55345	T368	TGPFHPTTHWKQTLF	75 / 8 AA	49
Phosphosite 9:	C14orf181	Q8N8A1	T29	NRTSHPTTTSKLKYL	62 / 8 AA	17
Phosphosite 10:	GRM8	O00222	S514	REHTHPASVCSLPCK	50 / 8 AA	102
Phosphosite 11:	CASP5	P51878	S331	SENLEADSVCKIHEE	44 / 9 AA	50
Phosphosite 12:	C9orf38	Q9UI66	T54	SADFFHPTPSCSELD	71 / 7 AA	13
Phosphosite 13:	GNL3L	Q9NVN8	T479	DAIENKTTVYKIGDL	62 / 8 AA	66
Phosphosite 14:	C14orf181	Q8N8A1	T28	QNRTSHPTTTSKLKY	71 / 7 AA	17
Phosphosite 15:	TTN	Q8WZ42	Y32514	EEGGHVKYVCKIENY	62 / 8 AA	3816
Phosphosite 16:	PDE4A	P27815	T215	RSPLGGPTPVCKATL	83 / 6 AA	98
Phosphosite 17:	KIF26A	Q9ULI4	T761	LRPFHPRTVALDPDR	83 / 6 AA	190
Phosphosite 18:	NOMO2	Q5JPE7	T103	LGWSFEPTTVELHVD	83 / 6 AA	139
Phosphosite 19:	AGAP4	Q96P64	T218	PPTANTPTPVCKRSM	83 / 6 AA	73
Phosphosite 20:	CTGLF1	Q5VW22	T218	PPTANTPTPVCKRSM	83 / 6 AA	73