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:	STAT3
Human P-Site:	S399
P-Site Sequence:	KVMNMEESNNGSLSA
UniProt:	P40763
Intern. Prot. ID:	IPI00784414

Protein Phosphosite Match	Human Protein Short Name	Human UniProt. ID	Phosphosite Number	Sequence	% Identity / # AA	Target Size kDa
Phosphosite 0:	STAT3	P40763	S399	KVMNMEESNNGSLSA	100 / 9 AA	88
Phosphosite 1:	STAT1	P42224	S395	KVMNMEESTNGSLAA	88 / 9 AA	87
Phosphosite 2:	PPP1R2P1	Q96PQ5	S188	ESMNTEESNQGSTAS	77 / 9 AA	23
Phosphosite 3:	PPP1R2P3	Q6NXS1	S188	ESMNTEESNQGSTPS	77 / 9 AA	23
Phosphosite 4:	PPP1R2	P41236	S188	ESMNTEESNQGSTPS	77 / 9 AA	23
Phosphosite 5:	STAT4	Q14765	S390	KAMSIEESSNGSLSV	66 / 9 AA	86
Phosphosite 6:	CXorf27	O75409	S73	ERVGLEASNNGSMRN	75 / 8 AA	13
Phosphosite 7:	STAT4	Q14765	S391	AMSIEESSNGSLSVE	75 / 8 AA	86
Phosphosite 8:	KIAA1529	Q9P1Z9	S868	LHAKMDESKEGSIQG	55 / 9 AA	198
Phosphosite 9:	ZFP106	Q9H2Y7	S572	ASRNVEESEKGSLKI	66 / 9 AA	209
Phosphosite 10:	ZBTB32	Q9Y2Y4	S336	SPGEMEESDQGHTGA	71 / 7 AA	53
Phosphosite 11:	PPM1D	O15297	S541	FKRTLEESNSGPLMK	55 / 9 AA	67
Phosphosite 12:	Ig-beta	P40259	S99	EKGRMEESQNESLAT	75 / 8 AA	26
Phosphosite 13:	TMEM20	Q2M3R5	S217	DTSGMEESYSGHLKG	71 / 7 AA	40
Phosphosite 14:	PLCB1	Q9NQ66	S1177	KGKISEDSNHGSAPL	71 / 7 AA	139
Phosphosite 15:	ANKRD12	Q6UB98	S1330	FQTISEESNQGSLLT	85 / 7 AA	236
Phosphosite 16:	MORC4	Q8TE76	S674	PRLVAEESNRGSTTI	85 / 7 AA	106
Phosphosite 17:	BPTF	Q12830	S1075	MDENMDESDKRKCSR	57 / 7 AA	338
Phosphosite 18:	PI4KA	P42356	S145	RYSNMEESLLSKLFP	100 / 5 AA	231
Phosphosite 19:	WDR12	Q9GZL7	S230	EEDEMEESTNRPRKK	83 / 6 AA	48
Phosphosite 20:	FAM129A	Q9BZQ8	T734	APVMEEDTNGESHVP	71 / 7 AA	103