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:	S191
P-Site Sequence:	HPPSNRASTETYSTP
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	S191	HPPSNRASTETYSTP	100 / 9 AA	60
Phosphosite 1:	Smad4	Q13485	T192	PPSNRASTETYSTPA	100 / 8 AA	60
Phosphosite 2:	AGC1	P16112	S563	RTYGVRPSTETYDVY	85 / 7 AA	250
Phosphosite 3:	AGC1	P16112	T564	TYGVRPSTETYDVYC	85 / 7 AA	250
Phosphosite 4:	TLN1	Q9Y490	T2009	GTLNREGTETFADHR	62 / 8 AA	270
Phosphosite 5:	NAGLT1	Q5TF39	S217	KQEKARASAETFRRA	71 / 7 AA	56
Phosphosite 6:	GOLGA3	Q08378	S52	CAEVNRASTEGESPD	100 / 6 AA	167
Phosphosite 7:	GOLGA3	Q08378	T53	AEVNRASTEGESPDG	100 / 6 AA	167
Phosphosite 8:	Smad4	Q13485	T194	SNRASTETYSTPALL	100 / 6 AA	60
Phosphosite 9:	CXCR5	P32302	T86	HRQTRSSTETFLFHL	71 / 7 AA	42
Phosphosite 10:	CXCR5	P32302	S85	RHRQTRSSTETFLFH	71 / 7 AA	42
Phosphosite 11:	SMG1	Q96Q15	S1365	NTVSNRLSTEDCLIP	66 / 9 AA	410
Phosphosite 12:	FAM44A	Q8NFC6	T222	ASAARASTETSNAKT	100 / 6 AA	330
Phosphosite 13:	FAM44A	Q8NFC6	S221	EASAARASTETSNAK	100 / 6 AA	330
Phosphosite 14:	PPP1R9A	Q9ULJ8	S184	GSKSNRGSTDSLDSL	55 / 9 AA	123
Phosphosite 15:	ATXN2L	Q8WWM7	S430	SSPSNRPSGETSVPP	75 / 8 AA	113
Phosphosite 16:	TRS85	Q9Y2L5	S237	SRTSNRASDEQIPDP	85 / 7 AA	161
Phosphosite 17:	RNPEPL1	Q9HAU8	T156	TYAQRRITTETYGAA	71 / 7 AA	56
Phosphosite 18:	RNPEPL1	Q9HAU8	T157	YAQRRITTETYGAAF	71 / 7 AA	56
Phosphosite 19:	PIAS1	O75925	S633	SHTVTNRSSTDTASI	62 / 8 AA	72
Phosphosite 20:	PIAS1	O75925	T635	TVTNRSSTDTASIFG	71 / 7 AA	72