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:	SMAD3
Human P-Site:	S422
P-Site Sequence:	GSPSIRCSSVS____
UniProt:	P84022
Intern. Prot. ID:	IPI00024305

Protein Phosphosite Match	Human Protein Short Name	Human UniProt. ID	Phosphosite Number	Sequence	% Identity / # AA	Target Size kDa
Phosphosite 0:	SMAD3	P84022	S422	GSPSIRCSSVS____	100 / 8 AA	48
Phosphosite 1:	SMAD3	P84022	S423	SPSIRCSSVS_____	100 / 7 AA	48
Phosphosite 2:	Smad2	Q15796	S464	GSPSVRCSSMS____	75 / 8 AA	52
Phosphosite 3:	AMZ1	Q400G9	S143	AAASIRCSSRPSRDS	100 / 6 AA	55
Phosphosite 4:	NHS	Q6T4R5	S361	REASIRCSLVHSQSV	85 / 7 AA	177
Phosphosite 5:	CR1	P17927	T1824	GESSIRCTSDPQGNG	83 / 6 AA	224
Phosphosite 6:	Smad2	Q15796	S465	SPSVRCSSMS_____	71 / 7 AA	52
Phosphosite 7:	BCE1	Q04727	S204	RDRDSIKSSSVSPSA	75 / 8 AA	84
Phosphosite 8:	SH2B1	Q9NRF2	S324	PRLSIPCSSITDVRT	62 / 8 AA	79
Phosphosite 9:	USP48	Q86UV5	S764	VRKPTRCSPVSSVGN	62 / 8 AA	119
Phosphosite 10:	senataxin	Q7Z333	S2289	QTEAIRCSSDWPFQP	83 / 6 AA	303
Phosphosite 11:	BCE1	Q04727	S205	DRDSIKSSSVSPSAS	75 / 8 AA	84
Phosphosite 12:	RFX7	Q2KHR2	S1069	SSNFRCRSVSPAVHR	71 / 7 AA	147
Phosphosite 13:	PLEKHH1	Q9ULM0	S278	KLLTFRCSSASWGEG	62 / 8 AA	151
Phosphosite 14:	WRN	Q14191	S198	KDKSIRCSNWSKFPL	83 / 6 AA	162
Phosphosite 15:	WRN	Q14191	S194	KQLLKDKSIRCSNWS	100 / 5 AA	162
Phosphosite 16:	SMAD3	P84022	S418	LTQMGSPSIRCSSVS	100 / 5 AA	48
Phosphosite 17:	ZNF318	Q5VUA4	S658	RFSADRCSSVDHCFS	100 / 5 AA	251
Phosphosite 18:	TBC1D4	O60343	S318	EFRSRCSSVTGVQRR	83 / 6 AA	147
Phosphosite 19:	CCDC21	Q6P2H3	S50	RSRFSRCSSVADSGD	83 / 6 AA	86
Phosphosite 20:	KIAA1109	Q2LD37	S4365	KSPASIRSRSVSDSS	75 / 8 AA	555