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:	S315
P-Site Sequence:	LAFQPPISNHPAPEY
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	S315	LAFQPPISNHPAPEY	100 / 9 AA	60
Phosphosite 1:	PDE4DIP	Q5VU43	S697	LMSQAPISNQQAEVT	66 / 9 AA	130
Phosphosite 2:	TTL	Q8NG68	S121	NGIQPPISNSRTDER	100 / 6 AA	43
Phosphosite 3:	Gab2	Q9UQC2	S177	FTFEPPVSNHMQPTL	71 / 7 AA	74
Phosphosite 4:	MLL3	Q8NEZ4	T2100	PYSQPPLTPHPAVNE	66 / 9 AA	541
Phosphosite 5:	USP36	Q9P275	S756	SRLQPPFSPHPTLLS	66 / 9 AA	123
Phosphosite 6:	NEO1	Q92859	S1251	QPPQPVISAHPIHSL	75 / 8 AA	160
Phosphosite 7:	TRIM9	Q9C026	S468	SWKQPPLSTVPADGY	66 / 9 AA	79
Phosphosite 8:	SHANK2	Q9UPX8	S1395	SILQQPISNKPFTTK	75 / 8 AA	159
Phosphosite 9:	GLI3	P10071	S721	SSQQSPISNYSNSGL	62 / 8 AA	170
Phosphosite 10:	WASF3	Q9UPY6	S438	EPAQPPISDARSDLL	83 / 6 AA	55
Phosphosite 11:	PCNT	O95613	S201	QRGIFTISDHPAEQR	83 / 6 AA	378
Phosphosite 12:	BAG4	O95429	S49	EPPQPPISWRVRGGG	71 / 7 AA	50
Phosphosite 13:	USPL1	Q5W0Q7	S826	ASKPPPISKPPAGPP	75 / 8 AA	120
Phosphosite 14:	HUWE1	Q7Z6Z7	S718	ATAPPPRSNHAAEEA	75 / 8 AA	482
Phosphosite 15:	TRMT6	Q9UJA5	S312	SMAEAPESNHPEDQE	55 / 9 AA	56
Phosphosite 16:	RIMS1	Q86UR5	S582	RETSPISSHPVTWQP	71 / 7 AA	189
Phosphosite 17:	RIMS1	Q86UR5	S581	SRETSPISSHPVTWQ	71 / 7 AA	189
Phosphosite 18:	PCDHA11	Q9Y5I1	S792	GERQEPGSNHPGQPR	66 / 9 AA	103
Phosphosite 19:	MAP3K7IP3	Q8N5C8	S388	NRSPSPISNQPSPWN	71 / 7 AA	79
Phosphosite 20:	KIAA1718	Q6ZMT4	S905	ASNPPPISNQATKGK	62 / 8 AA	107