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:	RSK4
Human P-Site:	T581
P-Site Sequence:	GENGLLLTPCYTANF
UniProt:	Q9UK32
Intern. Prot. ID:	IPI00007123

Protein Phosphosite Match	Human Protein Short Name	Human UniProt. ID	Phosphosite Number	Sequence	% Identity / # AA	Target Size kDa
Phosphosite 0:	RSK4	Q9UK32	T581	GENGLLLTPCYTANF	100 / 9 AA	84
Phosphosite 1:	RPS6KA1	Q15418	T573	AENGLLMTPCYTANF	88 / 9 AA	83
Phosphosite 2:	RSK3	Q15349	T570	AGNGLLMTPCYTANF	88 / 9 AA	83
Phosphosite 3:	RSK2	P51812	T577	AENGLLMTPCYTANF	88 / 9 AA	84
Phosphosite 4:	HEXB	P07686	T307	KGQKDLLTPCYSRQN	85 / 7 AA	63
Phosphosite 5:	HEXA	P06865	T275	PGIPGLLTPCYSGSE	85 / 7 AA	61
Phosphosite 6:	MAPKAPK3	Q16644	T201	TTQNALQTPCYTPYY	85 / 7 AA	43
Phosphosite 7:	RPS6KA1	Q15418	Y576	GLLMTPCYTANFVAP	83 / 6 AA	83
Phosphosite 8:	RSK3	Q15349	Y573	GLLMTPCYTANFVAP	83 / 6 AA	83
Phosphosite 9:	RSK2	P51812	Y580	GLLMTPCYTANFVAP	83 / 6 AA	84
Phosphosite 10:	MAPKAPK2	P49137	T222	TSHNSLTTPCYTPYY	85 / 7 AA	46
Phosphosite 11:	HEXB	P07686	Y310	KDLLTPCYSRQNKLD	83 / 6 AA	63
Phosphosite 12:	HEXA	P06865	Y278	PGLLTPCYSGSEPSG	83 / 6 AA	61
Phosphosite 13:	CACNA1D	Q01668	T1994	TPPYRDWTPCYTPLI	83 / 6 AA	245
Phosphosite 14:	DHDPSL	Q86XE5	T137	ADAAMVVTPCYYRGR	50 / 8 AA	35
Phosphosite 15:	CACNA1D	Q01668	Y1997	YRDWTPCYTPLIQVE	83 / 6 AA	245
Phosphosite 16:	DLGAP5	Q15398	T338	RSANAFLTPSYTWTP	71 / 7 AA	95
Phosphosite 17:	UBE2C	O00762	Y103	VKFLTPCYHPNVDTQ	100 / 5 AA	20
Phosphosite 18:	FOXO1A	Q12778	T402	PGTMMQQTPCYSFAP	50 / 8 AA	70
Phosphosite 19:	RPS6KA1	Q15418	T577	LLMTPCYTANFVAPE	100 / 5 AA	83
Phosphosite 20:	RSK3	Q15349	T574	LLMTPCYTANFVAPE	100 / 5 AA	83