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:	S343
P-Site Sequence:	GETFKVPSSCPIVTV
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	S343	GETFKVPSSCPIVTV	100 / 9 AA	60
Phosphosite 1:	LOH11CR2A	O00534	S197	HGIEKVQSNCPLSPT	62 / 8 AA	86
Phosphosite 2:	DLK	Q12852	S333	SLHLPVPSSCPDGFK	75 / 8 AA	93
Phosphosite 3:	MLTK	Q9NYL2	S229	NERLTIPSSCPRSFA	62 / 8 AA	91
Phosphosite 4:	NCRNA00161	P59043	S27	PRSHMPGSCPIVPHN	71 / 7 AA	6
Phosphosite 5:	PRDM15	P57071	S902	VRYKKEPSGCPVCGK	62 / 8 AA	169
Phosphosite 6:	Hoxd10	P28358	S138	YQRLVPESCPVENPE	71 / 7 AA	38
Phosphosite 7:	ASTN1	O14525	S949	HSKGRCPSSCPLCHV	62 / 8 AA	145
Phosphosite 8:	INADL	Q8NI35	S1337	VTPFPVPSSSPSSIE	75 / 8 AA	196
Phosphosite 9:	ASTN1	O14525	S950	SKGRCPSSCPLCHVT	62 / 8 AA	145
Phosphosite 10:	BRAF	P15056	S683	PDLSKVRSNCPKAMK	71 / 7 AA	84
Phosphosite 11:	MAP3K13	O43283	S376	SLHLPVPSTCPDGFK	62 / 8 AA	108
Phosphosite 12:	PRIC285	Q9BYK8	S230	GERFRVPSSTADFQV	83 / 6 AA	295
Phosphosite 13:	MLTK	Q9NYL2	S230	ERLTIPSSCPRSFAE	71 / 7 AA	91
Phosphosite 14:	CXorf21	Q9HAI6	S115	RETYLVPSSCKSICK	71 / 7 AA	34
Phosphosite 15:	Separase	Q14674	S1545	SSKKKLPSPCPDKES	71 / 7 AA	233
Phosphosite 16:	FOXK1	P85037	S253	GTISVPNSCPASPRG	83 / 6 AA	75
Phosphosite 17:	RTN4R	Q9BZR6	T40	CYNEPKVTTSCPQQG	71 / 7 AA	51
Phosphosite 18:	JMJD2C	Q9H3R0	S559	RNSFKVPSIAEGENK	100 / 5 AA	120
Phosphosite 19:	C330043M08Rik	Q4G0A6	S109	KKNNKVPSRCSETTL	83 / 6 AA	84
Phosphosite 20:	CCDC142	Q17RM4	S679	QTTKLPSSCLNSLES	83 / 6 AA	82