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:	S389
P-Site Sequence:	HQLFKGFSFVATSIA
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	S389	HQLFKGFSFVATSIA	100 / 9 AA	84
Phosphosite 1:	RPS6KA1	Q15418	S380	HQLFRGFSFVATGLM	88 / 9 AA	83
Phosphosite 2:	RSK3	Q15349	S377	HHLFRGFSFVASSLI	77 / 9 AA	83
Phosphosite 3:	RSK2	P51812	S386	HQLFRGFSFVAITSD	77 / 9 AA	84
Phosphosite 4:	MSK2	O75676	S360	PRIFQGYSFVAPSIL	75 / 8 AA	86
Phosphosite 5:	MSK1	O75582	S376	EKLFQGYSFVAPSIL	75 / 8 AA	90
Phosphosite 6:	MSK1	O75582	Y375	SEKLFQGYSFVAPSI	75 / 8 AA	90
Phosphosite 7:	MSK2	O75676	Y359	DPRIFQGYSFVAPSI	75 / 8 AA	86
Phosphosite 8:	EPHX1	P07099	S201	SSKKGFNSVATARIF	75 / 8 AA	53
Phosphosite 9:	ZNF676	Q8N7Q3	S264	ECGKGFSSVSTLNTH	75 / 8 AA	68
Phosphosite 10:	UQCRFS1	P47985	S114	SEARKGFSYLVTGVT	62 / 8 AA	30
Phosphosite 11:	ZNF676	Q8N7Q3	S263	EECGKGFSSVSTLNT	75 / 8 AA	68
Phosphosite 12:	TIA1	P31483	Y251	RVFPDKGYSFVRFNS	83 / 6 AA	43
Phosphosite 13:	UQCRFS1	P47985	Y115	EARKGFSYLVTGVTT	62 / 8 AA	30
Phosphosite 14:	UQCRFSL1	P0C7P4	Y124	EARKGFSYLVTGVTT	62 / 8 AA	31
Phosphosite 15:	TMOD4	Q9NZQ9	S230	NTYVRSFSLVATRSG	62 / 8 AA	39
Phosphosite 16:	TIAL1	Q01085	S243	VFPEKGYSFVRFSTH	83 / 6 AA	42
Phosphosite 17:	PKCd	Q05655	S664	QSAFAGFSFVNPKFE	85 / 7 AA	78
Phosphosite 18:	TIA1	P31483	S252	VFPDKGYSFVRFNSH	83 / 6 AA	43
Phosphosite 19:	KIAA0232	Q92628	S1014	NGLNKGFSFIFHEDL	83 / 6 AA	155
Phosphosite 20:	ALG8	Q9BVK2	S232	DGSIRWKSFSFVRVI	71 / 7 AA	60