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:	Y133
P-Site Sequence:	VCVNPYHYERVVSPG
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	Y133	VCVNPYHYERVVSPG	100 / 9 AA	60
Phosphosite 1:	Smad2	Q15796	Y167	VCVNPYHYQRVETPV	87 / 8 AA	52
Phosphosite 2:	SMAD3	P84022	Y127	VCVNPYHYQRVETPV	87 / 8 AA	48
Phosphosite 3:	Smad5	Q99717	Y128	VCINPYHYKRVESPV	87 / 8 AA	52
Phosphosite 4:	SMAD1	Q15797	Y127	VCINPYHYKRVESPV	87 / 8 AA	52
Phosphosite 5:	Smad2	Q15796	Y165	DEVCVNPYHYQRVET	85 / 7 AA	52
Phosphosite 6:	SMAD3	P84022	Y125	DEVCVNPYHYQRVET	85 / 7 AA	48
Phosphosite 7:	Smad8	O15198	Y131	VCINPYHYRRVETPV	87 / 8 AA	52
Phosphosite 8:	PRPF8	Q6P2Q9	Y2256	KGYLPSHYERVQMLL	85 / 7 AA	274
Phosphosite 9:	PLA2G4B	P0C869	Y736	SSDSPYHYTKVTYSQ	55 / 9 AA	114
Phosphosite 10:	Smad8	O15198	Y129	KEVCINPYHYRRVET	85 / 7 AA	52
Phosphosite 11:	SmcX	P41229	Y157	GSLLRSHYERIVYPY	83 / 6 AA	176
Phosphosite 12:	SLC19A3	Q9BZV2	Y136	SVVSPEHYQRVSGYC	62 / 8 AA	56
Phosphosite 13:	SMCY	Q9BY66	Y157	GSLLRSHYERIIYPY	66 / 6 AA	174
Phosphosite 14:	KIAA1407	Q8NCU4	Y744	EAIAKEHYERVLLRK	83 / 6 AA	111
Phosphosite 15:	MVP	Q14764	Y15	IRIPPYHYIHVLDQN	62 / 8 AA	99
Phosphosite 16:	ARID5A	Q03989	Y135	ATCTRRHYERLVLPY	83 / 6 AA	64
Phosphosite 17:	CD45	P08575	Y980	SNVIPYDYNRVPLKH	71 / 7 AA	150
Phosphosite 18:	CD45	P08575	Y689	VDILPYDYNRVELSE	71 / 7 AA	150
Phosphosite 19:	RbBP2	P29375	Y162	GSLLKSHYERILYPY	66 / 6 AA	192
Phosphosite 20:	PTPN22	Q9Y2R2	Y68	KDILPYDYSRVELSL	71 / 7 AA	92