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:	POU4F3
Human P-Site:	S280
P-Site Sequence:	ERKRKRTSIAAPEKR
UniProt:	Q15319
Intern. Prot. ID:

Protein Phosphosite Match	Human Protein Short Name	Human UniProt. ID	Phosphosite Number	Sequence	% Identity / # AA	Target Size kDa
Phosphosite 0:	POU4F3	Q15319	S280	ERKRKRTSIAAPEKR	100 / 9 AA
Phosphosite 1:	POU4F1	Q01851	S362	EKKRKRTSIAAPEKR	100 / 9 AA	43
Phosphosite 2:	POU4F3	Q15319	T279	SERKRKRTSIAAPEK	100 / 8 AA
Phosphosite 3:	POU4F1	Q01851	T361	GEKKRKRTSIAAPEK	100 / 8 AA	43
Phosphosite 4:	ABCG2	Q9UNQ0	T194	SGGERKRTSIGMELI	85 / 7 AA	72
Phosphosite 5:	ABCG2	Q9UNQ0	S195	GGERKRTSIGMELIT	85 / 7 AA	72
Phosphosite 6:	LYST	Q99698	S2591	AVVQKRKSIAGPRKF	66 / 9 AA	429
Phosphosite 7:	POU5F1B	Q06416	T235	QARKRKRTSIENRVR	85 / 7 AA	39
Phosphosite 8:	POU5F1	Q01860	T235	QARKRKRTSIENRVR	85 / 7 AA	39
Phosphosite 9:	MIXL1	Q9H2W2	S92	SQRRKRTSFSAEQLQ	75 / 8 AA	25
Phosphosite 10:	POU5F1B	Q06416	S236	ARKRKRTSIENRVRG	85 / 7 AA	39
Phosphosite 11:	POU5F1	Q01860	S236	ARKRKRTSIENRVRG	85 / 7 AA	39
Phosphosite 12:	MIXL1	Q9H2W2	T91	ASQRRKRTSFSAEQL	75 / 8 AA	25
Phosphosite 13:	ABCG5	Q9H222	S202	TGERRRVSIAAQLLQ	66 / 9 AA	73
Phosphosite 14:	PPP1R13B	Q96KQ4	S710	RPLKKRSSITEPEGP	55 / 9 AA	120
Phosphosite 15:	TP53BP2	Q13625	S737	RPLKKRSSITEPEGP	55 / 9 AA	126
Phosphosite 16:	C20orf199	Q5QHF1	S36	DMARKRTSPGGPACR	66 / 9 AA	13
Phosphosite 17:	USE1	Q9NZ43	T141	EMDVRKRTGVAGSQP	62 / 8 AA	29
Phosphosite 18:	POU3F4	P49335	S284	RKRKKRTSIEVSVKG	55 / 9 AA	39
Phosphosite 19:	POU3F2	P20265	S360	RKRKKRTSIEVSVKG	55 / 9 AA	47
Phosphosite 20:	POU3F3	P20264	S412	RKRKKRTSIEVSVKG	55 / 9 AA	50