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:	SMAD3
Human P-Site:	S391
P-Site Sequence:	YRRQTVTSTPCWIEL
UniProt:	P84022
Intern. Prot. ID:	IPI00024305

Protein Phosphosite Match	Human Protein Short Name	Human UniProt. ID	Phosphosite Number	Sequence	% Identity / # AA	Target Size kDa
Phosphosite 0:	SMAD3	P84022	S391	YRRQTVTSTPCWIEL	100 / 9 AA	48
Phosphosite 1:	Smad2	Q15796	S433	YRRQTVTSTPCWIEL	100 / 9 AA	52
Phosphosite 2:	Smad5	Q99717	S431	YHRQDVTSTPCWIEI	88 / 9 AA	52
Phosphosite 3:	Smad2	Q15796	T434	RRQTVTSTPCWIELH	100 / 8 AA	52
Phosphosite 4:	SMAD3	P84022	T392	RRQTVTSTPCWIELH	100 / 8 AA	48
Phosphosite 5:	Smad2	Q15796	T432	EYRRQTVTSTPCWIE	100 / 8 AA	52
Phosphosite 6:	SMAD3	P84022	T390	EYRRQTVTSTPCWIE	100 / 8 AA	48
Phosphosite 7:	Smad5	Q99717	T430	EYHRQDVTSTPCWIE	87 / 8 AA	52
Phosphosite 8:	SMAD1	Q15797	T430	EYHRQDVTSTPCWIE	87 / 8 AA	52
Phosphosite 9:	Smad8	O15198	T432	EYHRQDVTSTPCWIE	87 / 8 AA	52
Phosphosite 10:	MEKK2	Q9Y2U5	T524	GMKSVTGTPYWMSPE	62 / 8 AA	70
Phosphosite 11:	MEKK3	Q99759	T530	GMRSVTGTPYWMSPE	62 / 8 AA	71
Phosphosite 12:	LPA	P08519	T4247	KATTVTGTPCQEWAA	85 / 7 AA	501
Phosphosite 13:	Plasminogen	P00747	T500	RATTVTGTPCQDWAA	85 / 7 AA	91
Phosphosite 14:	LPA	P08519	T4245	GKKATTVTGTPCQEW	85 / 7 AA	501
Phosphosite 15:	Plasminogen	P00747	T498	GKRATTVTGTPCQDW	85 / 7 AA	91
Phosphosite 16:	Smad4	Q13485	T521	PRQSIKETPCWIEIH	50 / 8 AA	60
Phosphosite 17:	STK39	Q9UEW8	T237	VRKTFVGTPCWMAPE	62 / 8 AA	60
Phosphosite 18:	OSR1	O95747	T189	VRKTFVGTPCWMAPE	62 / 8 AA	58
Phosphosite 19:	SI1	Q9P2N6	S85	IDVETVTSTPMPLYD	85 / 7 AA	96
Phosphosite 20:	BLZF1	Q9H2G9	S15	TKVTVTSSPIRGAGD	62 / 8 AA	45