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:	RSK2
Human P-Site:	S456
P-Site Sequence:	AVKIIDKSKRDPTEE
UniProt:	P51812
Intern. Prot. ID:	IPI00020898

Protein Phosphosite Match	Human Protein Short Name	Human UniProt. ID	Phosphosite Number	Sequence	% Identity / # AA	Target Size kDa
Phosphosite 0:	RSK2	P51812	S456	AVKIIDKSKRDPTEE	100 / 9 AA	84
Phosphosite 1:	RSK4	Q9UK32	S460	AVKIIDKSKRDPSEE	100 / 9 AA	84
Phosphosite 2:	RSK3	Q15349	S449	AVKIIDKSKRDPSEE	100 / 9 AA	83
Phosphosite 3:	RPS6KA1	Q15418	S452	AVKVIDKSKRDPSEE	88 / 9 AA	83
Phosphosite 4:	ANK3	Q12955	S3620	RSGAIDMSKRDFVEE	85 / 7 AA	480
Phosphosite 5:	EFHC1	Q5JVL4	S370	DLPRIDVSKREPPPV	75 / 8 AA	74
Phosphosite 6:	SULT1C2	O75897	S77	NEGDVEKSKRAPTHQ	62 / 8 AA	36
Phosphosite 7:	HERV-K_19q12 provirus ancestral Gag polyprotein	Q9YNA8	S271	LHEIIDKSRKEGDTE	62 / 8 AA	74
Phosphosite 8:	ERVK6	Q7LDI9	S271	LHEIIDKSRKEGDTE	62 / 8 AA	74
Phosphosite 9:	HERV-K_5q33.3 provirus ancestral Gag polyprotein	P87889	S271	LHEIIDKSRKEGDTE	62 / 8 AA	74
Phosphosite 10:	HERV-K_22q11.21 provirus ancestral Gag polyprotein	P63145	S271	LHEIIDKSRKEGDTE	62 / 8 AA	74
Phosphosite 11:	HERV-K_1q22 provirus ancestral Gag polyprotein	P63130	S271	LHEIIDKSRKEGDTE	62 / 8 AA	74
Phosphosite 12:	HERV-K_6q14.1 provirus ancestral Gag-Pol polyprotein	P63128	S271	LHEIIDKSRKEGDTE	62 / 8 AA	124
Phosphosite 13:	HERV-K_6q14.1 provirus ancestral Gag polyprotein	P63126	S271	LHEIIDKSRKEGDTE	62 / 8 AA	74
Phosphosite 14:	HERV-K_8p23.1 provirus ancestral Gag polyprotein	P62685	S271	LHEIIDKSRKEGDTE	62 / 8 AA	72
Phosphosite 15:	HERV-K_19p13.11 provirus ancestral Gag polyprotein	P62684	S271	LHEIIDKSRKEGDTE	62 / 8 AA	74
Phosphosite 16:	HERV-K_12q14.1 provirus ancestral Gag polyprotein	P62683	S271	LHEIIDKSRKEGDTE	62 / 8 AA	74
Phosphosite 17:	ZKSCAN2	Q63HK3	S690	HRALIEKSKRVVSQS	71 / 7 AA	111
Phosphosite 18:	C9orf93	Q6TFL3	S386	KKVIIDLSKRLQYNE	85 / 7 AA	153
Phosphosite 19:	EnvK4 protein	Q9UKH3	S688	KGGNVGKSKRDQIVT	62 / 8 AA	79
Phosphosite 20:	HERV-K_19p13.11 provirus ancestral Env polyprotein	Q902F9	S689	KGGNVGKSKRDQIVT	62 / 8 AA	79