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:	S273
P-Site Sequence:	RTPSPPLSSHPDIDT
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	S273	RTPSPPLSSHPDIDT	100 / 9 AA	47
Phosphosite 1:	ELK4	P28324	S274	TPSPPLSSHPDIDTD	100 / 8 AA	47
Phosphosite 2:	Kv4.3	Q9UK17	S537	STRSPSLSSHPGLTT	77 / 9 AA	73
Phosphosite 3:	ZNF473	Q8WTR7	S54	PPRPNLTSHPDGSED	75 / 8 AA	100
Phosphosite 4:	ZNF473	Q8WTR7	T53	DPPRPNLTSHPDGSE	75 / 8 AA	100
Phosphosite 5:	UGT1A1	P22309	S199	YVPRPLSSHSDHMTF	75 / 8 AA	60
Phosphosite 6:	UGT1A1	P22309	S198	SYVPRPLSSHSDHMT	85 / 7 AA	60
Phosphosite 7:	PHF21A	Q96BD5	S450	LTPTSPQSSHPDSPE	66 / 9 AA	75
Phosphosite 8:	CHMP7	Q8WUX9	S174	YQNSPLSSHPVVALS	100 / 6 AA	51
Phosphosite 9:	AMBRA1	Q9C0C7	S401	SLGGPLSSHPSRYHR	100 / 6 AA	143
Phosphosite 10:	AMBRA1	Q9C0C7	S400	RSLGGPLSSHPSRYH	100 / 6 AA	143
Phosphosite 11:	Kv4.3	Q9UK17	S538	TRSPSLSSHPGLTTT	75 / 8 AA	73
Phosphosite 12:	C5orf34	Q96MH7	S43	FEKSPPVSAHPLEQP	75 / 8 AA	73
Phosphosite 13:	NFKBIL2	Q96HA7	S696	PETSPPLSPCPEPPS	66 / 9 AA	151
Phosphosite 14:	PHF21A	Q96BD5	S451	TPTSPQSSHPDSPEN	85 / 7 AA	75
Phosphosite 15:	FAM180A	Q6UWF9	S112	RRLSASLSSHPGILK	66 / 9 AA	20
Phosphosite 16:	CACNA1B	Q00975	S2146	PKPKPSLSSHPTSPT	85 / 7 AA	262
Phosphosite 17:	L3MBTL	Q9Y468	S651	SLFMSALSAHPDRSL	71 / 7 AA	86
Phosphosite 18:	CACNA1B	Q00975	S2147	KPKPSLSSHPTSPTA	85 / 7 AA	262
Phosphosite 19:	MED13	Q9UHV7	S537	SPQPPPLSPHPCDVV	85 / 7 AA	239
Phosphosite 20:	LIAS	O43766	S29	CSPVRPLSSLPDKKK	85 / 7 AA	42