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:	S271
P-Site Sequence:	STTTWTGSRTAPYTP
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	S271	STTTWTGSRTAPYTP	100 / 9 AA	60
Phosphosite 1:	SFMBT2	Q5VUG0	S165	LIRDLTGSRTAPANL	87 / 8 AA	101
Phosphosite 2:	DIP2C	Q9Y2E4	T232	QGSTGSRTAPKYGNA	100 / 7 AA	171
Phosphosite 3:	SFMBT2	Q5VUG0	T167	RDLTGSRTAPANLLE	100 / 7 AA	101
Phosphosite 4:	ATP2A3	Q93084	S532	CSSVRVGSRTAPLTP	66 / 9 AA	114
Phosphosite 5:	RSF1	Q96T23	T846	PKGKVRWTGSRTRGR	100 / 6 AA	164
Phosphosite 6:	RSF1	Q96T23	S848	GKVRWTGSRTRGRWK	100 / 6 AA	164
Phosphosite 7:	C6orf174	Q5TF21	S87	QQGNKTGSRTGPPAS	85 / 7 AA	103
Phosphosite 8:	MXRA5	Q9NR99	S1383	GTPTWNPSRTAQPGR	66 / 9 AA	312
Phosphosite 9:	ATP2A3	Q93084	T534	SVRVGSRTAPLTPTS	100 / 6 AA	114
Phosphosite 10:	C6orf174	Q5TF21	T89	GNKTGSRTGPPASIR	85 / 7 AA	103
Phosphosite 11:	ARNT2	Q9HBZ2	S577	SQVAWTGSRPPFPGQ	83 / 6 AA	79
Phosphosite 12:	CASZ1	Q86V15	T142	SQDHPNWTGSREGGV	83 / 6 AA	190
Phosphosite 13:	NSD1	Q96L73	S561	IANSLTGSNTAPGSF	66 / 9 AA	297
Phosphosite 14:	FAM53A	Q6NSI3	S111	DPSESTGSSTAPPTK	75 / 8 AA	43
Phosphosite 15:	CASZ1	Q86V15	S144	DHPNWTGSREGGVVA	83 / 6 AA	190
Phosphosite 16:	DNTT	P04053	S452	ALLGWTGSRQFERDL	100 / 5 AA	58
Phosphosite 17:	ASXL1	Q8IXJ9	T609	ESSCRGWTGARTLAD	83 / 6 AA	165
Phosphosite 18:	FAM53A	Q6NSI3	S112	PSESTGSSTAPPTKR	75 / 8 AA	43
Phosphosite 19:	MLLT1	Q03111	S308	KKSSSKGSRSAPGTS	55 / 9 AA	62
Phosphosite 20:	LRRC25	Q8N386	S223	GLQPRYGSRSAPKPQ	62 / 8 AA	33