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:	S368
P-Site Sequence:	RFCLGQLSNVHRTEA
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	S368	RFCLGQLSNVHRTEA	100 / 9 AA	60
Phosphosite 1:	Smad5	Q99717	S315	RFCLGLLSNVNRNST	77 / 9 AA	52
Phosphosite 2:	SMAD1	Q15797	S315	RFCLGLLSNVNRNST	77 / 9 AA	52
Phosphosite 3:	Smad2	Q15796	S317	RFCLGLLSNVNRNAT	77 / 9 AA	52
Phosphosite 4:	Smad8	O15198	S317	RFCLGLLSNVNRNST	77 / 9 AA	52
Phosphosite 5:	PEO1	Q96RR1	S382	EEVLGELSNVEQAAG	66 / 9 AA	77
Phosphosite 6:	AP3M1	Q9Y2T2	S163	TLPTGQLSNIPWRRA	62 / 8 AA	47
Phosphosite 7:	POLDIP2	Q9Y2S7	S231	NHPWLELSDVHRETT	71 / 7 AA	42
Phosphosite 8:	POT1	Q9NUX5	S208	LVLEGDLSHIHRLQN	62 / 8 AA	71
Phosphosite 9:	SH3D19	Q5HYK7	S297	STVSGKLSNVERTRN	75 / 8 AA	87
Phosphosite 10:	DERA	Q9Y315	T200	TGELGTLTNVYKASM	55 / 9 AA	35
Phosphosite 11:	MRPS14	O60783	S121	LADHGQLSGIQRATW	62 / 8 AA	15
Phosphosite 12:	C17orf27	Q63HN8	S659	VWDFGQLSDVAEKLY	71 / 7 AA	374
Phosphosite 13:	NDUFA8	P51970	S126	RPDLGELSKVTKVKT	55 / 9 AA	20
Phosphosite 14:	CHKB	Q9Y259	T389	FQQKGQLTSVHSSS_	71 / 7 AA	45
Phosphosite 15:	CHKB	Q9Y259	S390	QQKGQLTSVHSSS__	62 / 8 AA	45
Phosphosite 16:	ACC2	O00763	S2351	LQASGELSHVHIQSM	71 / 7 AA	277
Phosphosite 17:	CXorf39	Q6PEV8	S52	DFGCQLSSCHRTDPL	71 / 7 AA	43
Phosphosite 18:	CXorf39	Q6PEV8	S51	SDFGCQLSSCHRTDP	71 / 7 AA	43
Phosphosite 19:	PLXNB1	O43157	S1607	EQGLGQLSNLLNSKL	85 / 7 AA	232
Phosphosite 20:	FBXO3	Q9UK99	S297	TSFLPELSSVHPPHY	55 / 9 AA	55