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:	S251
P-Site Sequence:	VVNRRGHSQSADWWS
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	S251	VVNRRGHSQSADWWS	100 / 9 AA	84
Phosphosite 1:	RSK3	Q15349	T237	VVNRRGHTQSADWWS	88 / 9 AA	83
Phosphosite 2:	RSK2	P51812	T246	VVNRRGHTQSADWWS	88 / 9 AA	84
Phosphosite 3:	DLL3	Q9NYJ7	S521	HVRRRGHSQDAGSRL	87 / 8 AA	65
Phosphosite 4:	LAMB2	P55268	S1338	DSIRHAHSQSAEAER	66 / 9 AA	196
Phosphosite 5:	RUNDC2A	Q9HA26	S370	GRKHRGHSESPEK__	55 / 9 AA	42
Phosphosite 6:	RUNDC2B	Q8IUI4	S217	GRKHRGHSESPEKNG	55 / 9 AA	27
Phosphosite 7:	Putative RUNDC2-like protein 2	A6NJ09	S217	GRKHRGHSESPEKNG	55 / 9 AA	27
Phosphosite 8:	RPS6KA1	Q15418	S242	NRQGHSHSADWWSYG	85 / 7 AA	83
Phosphosite 9:	C1orf106	Q3KP66	S401	IQGRRGQSQSLRVDS	85 / 7 AA	73
Phosphosite 10:	KIAA1522	Q9P206	S360	SSDTWSHSQSSDTIV	62 / 8 AA	107
Phosphosite 11:	NKX1-1	Q15270	S146	GGGGHSPSADSGDEV	85 / 7 AA	41
Phosphosite 12:	NUMA1	Q14980	S1181	KAQELGHSQSALASA	100 / 6 AA	238
Phosphosite 13:	NKX1-1	Q15270	S144	SSGGGGHSPSADSGD	85 / 7 AA	41
Phosphosite 14:	NUMA1	Q14980	S1183	QELGHSQSALASAQR	100 / 6 AA	238
Phosphosite 15:	BICC1	Q9H694	S576	ALNGHAQSPDIKYGA	71 / 7 AA	105
Phosphosite 16:	SRRM2	Q9UQ35	S554	NTQRRGRSRSARRGR	75 / 8 AA	300
Phosphosite 17:	C2orf16	Q68DN1	S1871	PSERRGHSSSGKTCH	75 / 8 AA	224
Phosphosite 18:	FLG	P20930	S391	HGSGHQQSADSSRHS	85 / 7 AA	435
Phosphosite 19:	AIM1	Q9Y4K1	S1429	EPQFQGHSQSFEETT	62 / 8 AA	189
Phosphosite 20:	KATNB1	Q9BVA0	S147	VFRYRGHSQAVRCLR	71 / 7 AA	72