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:	S220
P-Site Sequence:	KLTDFGLSKESVDQE
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	S220	KLTDFGLSKESVDQE	100 / 9 AA	84
Phosphosite 1:	RSK2	P51812	S215	KLTDFGLSKESIDHE	88 / 9 AA	84
Phosphosite 2:	RPS6KA1	Q15418	S209	KLTDFGLSKEAIDHE	77 / 9 AA	83
Phosphosite 3:	RSK3	Q15349	S206	KITDFGLSKEAIDHD	77 / 9 AA	83
Phosphosite 4:	CSK	P41240	T336	KVSDFGLTKEASSTQ	75 / 8 AA	51
Phosphosite 5:	RARB	P10826	S154	KCFEVGMSKESVRND	66 / 9 AA	50
Phosphosite 6:	RAR-alpha	P10276	S154	KCFEVGMSKESVRND	66 / 9 AA	51
Phosphosite 7:	CaMK4	Q16566	S189	KIADFGLSkIVEHQV	100 / 6 AA	52
Phosphosite 8:	Ret	P07949	S896	KISDFGLSRDVYEED	71 / 7 AA	124
Phosphosite 9:	RIPK2	O43353	S168	KIADFGLSKWRMMSL	100 / 6 AA	61
Phosphosite 10:	SgK288	Q8NFD2	S167	KISDFGLSKWMEQST	100 / 6 AA	85
Phosphosite 11:	CADPS	Q9ULU8	S229	LPEIDGLSKETVLSS	85 / 7 AA	153
Phosphosite 12:	CADPS2	Q86UW7	S195	LPEIDGLSKETVLSS	85 / 7 AA	148
Phosphosite 13:	CaMK1-alpha	Q14012	S166	MISDFGLSKMEDPGS	100 / 6 AA	41
Phosphosite 14:	ZNF540	Q8NDQ6	S100	DIHEISLSKESIIEK	55 / 9 AA	77
Phosphosite 15:	RNF34	Q969K3	S247	EDRNPGLSKERVRAS	66 / 9 AA	42
Phosphosite 16:	BUB1B	O60566	S25	EGDEWELSKENVQPL	55 / 9 AA	120
Phosphosite 17:	DLK	Q12852	T257	VKISDFGTSKELSDK	85 / 7 AA	93
Phosphosite 18:	DLK	Q12852	S258	KISDFGTSKELSDKS	85 / 7 AA	93
Phosphosite 19:	MAP3K13	O43283	T300	VKISDFGTSKELSDK	85 / 7 AA	108
Phosphosite 20:	MAP3K13	O43283	S301	KISDFGTSKELSDKS	85 / 7 AA	108