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:	S173
P-Site Sequence:	FEGQPSLSTEGHSIQ
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	S173	FEGQPSLSTEGHSIQ	100 / 9 AA	60
Phosphosite 1:	Smad4	Q13485	T174	EGQPSLSTEGHSIQT	100 / 8 AA	60
Phosphosite 2:	Smad4	Q13485	S171	HDFEGQPSLSTEGHS	100 / 7 AA	60
Phosphosite 3:	SLAIN2	Q9P270	S391	RLQQPRLSLQGHPTD	66 / 9 AA	63
Phosphosite 4:	SGSM1	Q2NKQ1	S788	EHSEPSLSTEDSVLD	75 / 8 AA	130
Phosphosite 5:	SLC24A2	Q9UI40	S104	YTPQPPLSKEGESEN	75 / 8 AA	74
Phosphosite 6:	DSEL	Q8IZU8	S844	EGSKKSLSSEGHHMD	85 / 7 AA	139
Phosphosite 7:	CTTNBP2	Q8WZ74	S1480	TWNKPDLSTEGMKNK	75 / 8 AA	181
Phosphosite 8:	SGSM1	Q2NKQ1	S786	LSEHSEPSLSTEDSV	85 / 7 AA	130
Phosphosite 9:	SEMA3B	Q13214	T212	GQRPSLRTEPHDSRW	75 / 8 AA	83
Phosphosite 10:	PPP1R15B	Q5SWA1	S286	WQGCPPLSTEGLPEI	85 / 7 AA	79
Phosphosite 11:	DBF4B	Q8NFT6	S562	RVRVPSLSTAGPIPR	75 / 8 AA	67
Phosphosite 12:	SYNGAP1	Q96PV0	S1110	RPRQQSLSKEGSIGG	75 / 8 AA	148
Phosphosite 13:	CACNA1C	Q13936	S1488	PESEPSNSTEGETPC	75 / 8 AA	249
Phosphosite 14:	CMYA3	A4UGR9	S2155	NGFLPSLSTEKIKAE	100 / 6 AA	382
Phosphosite 15:	C18orf16	Q96NN2	S14	GTCHQQPSLSTFLFS	100 / 6 AA	15
Phosphosite 16:	CMYA3	A4UGR9	S2153	EKNGFLPSLSTEKIK	100 / 6 AA	382
Phosphosite 17:	PCNX	Q96RV3	S226	ISIQPSLSSCGQDLP	66 / 9 AA	259
Phosphosite 18:	C14orf124	Q9NRG7	S141	GVAYYQPSLTAEYDE	71 / 7 AA	35
Phosphosite 19:	DISP2	A7MBM2	S959	ELYSLQHSLSTEPAV	85 / 7 AA	152
Phosphosite 20:	BNC2	Q6ZN30	S909	DSSQPSLSKDLRDEF	71 / 7 AA	122