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:	ELK4
Human P-Site:	S381
P-Site Sequence:	IHFWSTLSPVAPLSP
UniProt:	P28324
Intern. Prot. ID:	IPI00002849

Protein Phosphosite Match	Human Protein Short Name	Human UniProt. ID	Phosphosite Number	Sequence	% Identity / # AA	Target Size kDa
Phosphosite 0:	ELK4	P28324	S381	IHFWSTLSPVAPLSP	100 / 9 AA	47
Phosphosite 1:	Elk-1	P19419	S383	IHFWSTLSPIAPRSP	88 / 9 AA	45
Phosphosite 2:	Elk-3	P41970	S357	IHFWSSLSPVAPLSP	88 / 9 AA	44
Phosphosite 3:	Elk-1	P19419	T381	PSIHFWSTLSPIAPR	85 / 7 AA	45
Phosphosite 4:	POU2F3	Q9UKI9	S28	TDARSTLSQVEPGND	66 / 9 AA	47
Phosphosite 5:	MS4A10	Q96PG2	S23	LPSWQVLSPVQPWQT	66 / 9 AA	30
Phosphosite 6:	DIP2C	Q9Y2E4	S331	LQRWGTISPKAPCLT	66 / 9 AA	171
Phosphosite 7:	MARCH-IX	Q86YJ5	S208	WLIWSSLSPSAKWQR	75 / 8 AA	38
Phosphosite 8:	C4orf21	Q86YA3	T1002	SPEENISTLSPVSTF	100 / 6 AA	119
Phosphosite 9:	CXXC1	Q9P0U4	S224	KYFPSSLSPVTPSES	75 / 8 AA	76
Phosphosite 10:	MANBA	O00462	S727	VRVHTWSSLEPVCSR	71 / 7 AA	101
Phosphosite 11:	PRKAA2	P54646	S527	LTGSTLSSVSPRLGS	75 / 8 AA	62
Phosphosite 12:	C4orf21	Q86YA3	S1004	EENISTLSPVSTFSL	85 / 7 AA	119
Phosphosite 13:	PRKAA2	P54646	S526	SLTGSTLSSVSPRLG	75 / 8 AA	62
Phosphosite 14:	SIDT2	Q8NBJ9	S138	YVDVSTLSPVNTTYQ	100 / 6 AA	94
Phosphosite 15:	C4B	P0C0L5	T1036	DKTEQWSTLPPETKD	83 / 6 AA	193
Phosphosite 16:	C4A	P0C0L4	T1036	DKTEQWSTLPPETKD	83 / 6 AA	193
Phosphosite 17:	ARSD	P51689	T554	AVSEHRQTLSPVPQQ	71 / 7 AA	65
Phosphosite 18:	ARSD	P51689	S556	SEHRQTLSPVPQQFS	71 / 7 AA	65
Phosphosite 19:	COG7	P83436	S135	ADKWSTLSADIEETF	83 / 6 AA	86
Phosphosite 20:	XYLT2	Q9H1B5	S848	LTSWSSLSPDPKSEL	83 / 6 AA	97