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:	Y513
P-Site Sequence:	VKGWGPDYPRQSIKE
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	Y513	VKGWGPDYPRQSIKE	100 / 9 AA	60
Phosphosite 1:	Smad2	Q15796	Y426	VKGWGAEYRRQTVTS	55 / 9 AA	52
Phosphosite 2:	SMAD3	P84022	Y384	VKGWGAEYRRQTVTS	55 / 9 AA	48
Phosphosite 3:	Smad5	Q99717	Y424	VKGWGAEYHRQDVTS	62 / 8 AA	52
Phosphosite 4:	SMAD1	Q15797	Y424	VKGWGAEYHRQDVTS	62 / 8 AA	52
Phosphosite 5:	Smad8	O15198	Y426	VKGWGAEYHRQDVTS	62 / 8 AA	52
Phosphosite 6:	Smad6	O43541	Y476	AKGWGPCYSRQFITS	75 / 8 AA	53
Phosphosite 7:	ALG6	Q9Y672	Y72	LQYWGLDYPPLTAYH	55 / 9 AA	58
Phosphosite 8:	MEKK4	Q9Y6R4	Y582	DPMWGSDYVQLSRTP	55 / 9 AA	182
Phosphosite 9:	SLTM	Q9NWH9	Y761	RFGHGSDYSRQQNRF	62 / 8 AA	117
Phosphosite 10:	VTN	P04004	Y239	DGVLDPDYPRNISDG	71 / 7 AA	54
Phosphosite 11:	EML2	O95834	S323	RRVVLWGSDYSKLQE	57 / 7 AA	71
Phosphosite 12:	TRAF3IP2	O43734	Y290	QVPYGHDYPRAAYQQ	55 / 9 AA	65
Phosphosite 13:	EML2	O95834	Y325	VVLWGSDYSKLQEVE	57 / 7 AA	71
Phosphosite 14:	OLFM4	Q6UX06	Y278	YGAWGRDYSPQHPNK	62 / 8 AA	57
Phosphosite 15:	TBC1D29	Q9UFV1	T74	KETWGPATPRALKGT	71 / 7 AA	16
Phosphosite 16:	JPH1	Q9HDC5	Y423	FYQPGPDYVKQRFQE	71 / 7 AA	72
Phosphosite 17:	GRIN3A	Q8TCU5	Y805	RESSAEDYVRQSFPE	55 / 9 AA	125
Phosphosite 18:	VPS11	Q9H270	Y221	YIVSGKDYPRVELDT	71 / 7 AA	108
Phosphosite 19:	MED4	Q9NPJ6	Y220	PDVLAPQYPWQSNDM	62 / 8 AA	30
Phosphosite 20:	SH3GL3	Q99963	Y225	FIEAALDYHRQSTEI	83 / 6 AA	39