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:	S264
P-Site Sequence:	VDGFTDPSNSERFCL
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	S264	VDGFTDPSNSERFCL	100 / 9 AA	48
Phosphosite 1:	Smad2	Q15796	S306	VDGFTDPSNSERFCL	100 / 9 AA	52
Phosphosite 2:	PRDM16	Q9HAZ2	S350	VKVFTDPSNLQRHIR	77 / 9 AA	140
Phosphosite 3:	EVI1	Q03112	S144	AKVFTDPSNLQRHIR	77 / 9 AA	118
Phosphosite 4:	Smad2	Q15796	S308	GFTDPSNSERFCLGL	100 / 7 AA	52
Phosphosite 5:	SMAD3	P84022	S266	GFTDPSNSERFCLGL	100 / 7 AA	48
Phosphosite 6:	VPS13C	Q709C8	S1564	AAPFSEPSSSEKESE	55 / 9 AA	422
Phosphosite 7:	Smad5	Q99717	S303	VDGFTDPSNNKSRFC	85 / 7 AA	52
Phosphosite 8:	Smad5	Q99717	T300	SVLVDGFTDPSNNKS	100 / 6 AA	52
Phosphosite 9:	SMAD1	Q15797	T300	SVLVDGFTDPSNNKN	100 / 6 AA	52
Phosphosite 10:	Smad2	Q15796	T303	SLTVDGFTDPSNSER	100 / 6 AA	52
Phosphosite 11:	SMAD3	P84022	T261	SMTVDGFTDPSNSER	100 / 6 AA	48
Phosphosite 12:	Smad8	O15198	T302	SVLIDGFTDPSNNRN	100 / 6 AA	52
Phosphosite 13:	C1orf228	Q6PIY5	S339	AMGNTDHSNSQRLAS	75 / 8 AA	49
Phosphosite 14:	FAM102A	Q5T9C2	S343	SQDFTDGSNTEDSNL	75 / 8 AA	42
Phosphosite 15:	FAM175B	Q15018	S387	LIDPTEPSNSEYSHS	85 / 7 AA	47
Phosphosite 16:	C6orf15	Q6UXA7	S56	QPSSTGPSNSEHPQP	75 / 8 AA	34
Phosphosite 17:	IRX6	P78412	S322	RFSFNDPSGSEEADF	75 / 8 AA	48
Phosphosite 18:	NUP160	Q12769	T196	DIGKVDFTDPCNYQL	83 / 6 AA	162
Phosphosite 19:	TEX15	Q9BXT5	T880	QNSESLFTEPSNVTT	83 / 6 AA	315
Phosphosite 20:	TEX15	Q9BXT5	S883	ESLFTEPSNVTTIDD	83 / 6 AA	315