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:	ERK1
Human P-Site:	S263
P-Site Sequence:	HILGILGSPSQEDLN
UniProt:	P27361
Intern. Prot. ID:	IPI00018195

Protein Phosphosite Match	Human Protein Short Name	Human UniProt. ID	Phosphosite Number	Sequence	% Identity / # AA	Target Size kDa
Phosphosite 0:	ERK1	P27361	S263	HILGILGSPSQEDLN	100 / 9 AA	43
Phosphosite 1:	ERK2	P28482	S246	HILGILGSPSQEDLN	100 / 9 AA	41
Phosphosite 2:	CCDC102A	Q96A19	S26	SLLTILGSPSPERMG	87 / 8 AA	63
Phosphosite 3:	ERK2	P28482	S248	LGILGSPSQEDLNCI	100 / 7 AA	41
Phosphosite 4:	GNAS	Q5JWF2	S283	WVPGAIGSPSQEAVR	77 / 9 AA	111
Phosphosite 5:	PCTAIRE2	Q00537	T407	LIFRLLGTPSQETWP	75 / 8 AA	60
Phosphosite 6:	TNKS1BP1	Q9C0C2	S435	FSEGVLQSPSQDQEK	66 / 9 AA	182
Phosphosite 7:	PCTAIRE2	Q00537	S409	FRLLGTPSQETWPGI	85 / 7 AA	60
Phosphosite 8:	GNAS	Q5JWF2	S285	PGAIGSPSQEAVRPP	85 / 7 AA	111
Phosphosite 9:	KIF24	Q5T7B8	S636	KRGGSRGSPSQEWVI	77 / 9 AA	152
Phosphosite 10:	C1orf144	Q7Z422	S105	ARKRILGSASPEEEQ	75 / 8 AA	17
Phosphosite 11:	HtrA2	O43464	S400	IHKVILGSPAHRAGL	71 / 7 AA	49
Phosphosite 12:	KIF24	Q5T7B8	S638	GGSRGSPSQEWVIHA	100 / 6 AA	152
Phosphosite 13:	CCDC102A	Q96A19	S28	LTILGSPSPERMGPA	85 / 7 AA	63
Phosphosite 14:	ARAP3	Q8WWN8	S1505	ETTAGLGSPSQPSSP	100 / 6 AA	170
Phosphosite 15:	STARD9	Q9P2P6	S317	GDSGILSSPSGTSSG	85 / 7 AA	507
Phosphosite 16:	NLRP1	Q9C000	S109	EPHLGSPSQPTSTAV	100 / 6 AA	166
Phosphosite 17:	NLRP1	Q9C000	S107	PSEPHLGSPSQPTST	100 / 6 AA	166
Phosphosite 18:	STARD9	Q9P2P6	S316	GGDSGILSSPSGTSS	85 / 7 AA	507
Phosphosite 19:	ARAP3	Q8WWN8	S1507	TAGLGSPSQPSSPQS	100 / 6 AA	170
Phosphosite 20:	ZSCAN20	P17040	S681	EGQWGNPSQEQWQES	71 / 7 AA	118