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:	Smad4
Human P-Site:	T338
P-Site Sequence:	MDVQVGETFKVPSSC
UniProt:	Q13485
Intern. Prot. ID:	IPI00013404

Protein Phosphosite Match	Human Protein Short Name	Human UniProt. ID	Phosphosite Number	Sequence	% Identity / # AA	Target Size kDa
Phosphosite 0:	Smad4	Q13485	T338	MDVQVGETFKVPSSC	100 / 9 AA	60
Phosphosite 1:	ZNF840P	A6NDX5	T215	ECNQCGETFNRPSKV	66 / 9 AA	83
Phosphosite 2:	TBX18	O95935	T448	LTNQAGETFAPPRTP	66 / 9 AA	65
Phosphosite 3:	ZNF697	Q5TEC3	T417	MCSECGETFSVSSHL	55 / 9 AA	60
Phosphosite 4:	POM121L2	Q96KW2	Y592	TSAVGNTYSVPSTCD	62 / 8 AA	103
Phosphosite 5:	CENPQ	Q7L2Z9	T123	RLLQQCETLKVPPKK	66 / 9 AA	31
Phosphosite 6:	PPPDE1	Q9BSY9	T66	NASELGETFKFKEAV	71 / 7 AA	21
Phosphosite 7:	ZNF563	Q8TA94	T83	DSSQCGETFSLIRDS	62 / 8 AA	55
Phosphosite 8:	Smad8	O15198	T288	LNNRVGETFQASSRS	55 / 9 AA	52
Phosphosite 9:	Smad2	Q15796	T289	LNQRVGETFHASQPS	83 / 6 AA	52
Phosphosite 10:	SMAD3	P84022	T247	LNQRVGETFHASQPS	83 / 6 AA	48
Phosphosite 11:	ACTA1	P68133	T128	MTQIMFETFNVPAMY	83 / 6 AA	42
Phosphosite 12:	ACTC1	P68032	T128	MTQIMFETFNVPAMY	83 / 6 AA	42
Phosphosite 13:	ACTG2	P63267	T127	MTQIMFETFNVPAMY	83 / 6 AA	42
Phosphosite 14:	ACTA2	P62736	T128	MTQIMFETFNVPAMY	83 / 6 AA	42
Phosphosite 15:	GCN1L1	Q92616	S8	MAADTQVSETLKRFA	71 / 7 AA	293
Phosphosite 16:	Vipr2	P41587	T70	RPANVGETVTVPCPK	75 / 8 AA	49
Phosphosite 17:	ZNF697	Q5TEC3	S419	SECGETFSVSSHLFT	71 / 7 AA	60
Phosphosite 18:	C12orf35	Q9HCM1	T1404	QKGSVGATFKLGDSL	71 / 7 AA	195
Phosphosite 19:	ZNF823	P16415	T79	DDSQCGETFGQIPDS	83 / 6 AA	70
Phosphosite 20:	ZNF491	Q8N8L2	T17	EGSQCGETFTQVPED	83 / 6 AA	51