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:	MEK1
Human P-Site:	S228
P-Site Sequence:	NSFVGTRSYMSPERL
UniProt:	Q02750
Intern. Prot. ID:	IPI00219604

Protein Phosphosite Match	Human Protein Short Name	Human UniProt. ID	Phosphosite Number	Sequence	% Identity / # AA	Target Size kDa
Phosphosite 0:	MEK1	Q02750	S228	NSFVGTRSYMSPERL	100 / 9 AA	43
Phosphosite 1:	MEK1	Q02750	Y229	SFVGTRSYMSPERLQ	100 / 8 AA	43
Phosphosite 2:	MAP2K2	P36507	Y233	SFVGTRSYMAPERLQ	87 / 8 AA	44
Phosphosite 3:	MEK1	Q02750	T226	MANSFVGTRSYMSPE	100 / 7 AA	43
Phosphosite 4:	MAP2K2	P36507	T230	MANSFVGTRSYMAPE	100 / 7 AA	44
Phosphosite 5:	ActR2B	Q13705	Y364	GQVGTRRYMAPEVLE	75 / 8 AA	58
Phosphosite 6:	ActR2	P27037	Y365	GQVGTRRYMAPEVLE	75 / 8 AA	58
Phosphosite 7:	NEK6	Q9HC98	Y212	HSLVGTPYYMSPERI	77 / 9 AA	36
Phosphosite 8:	NEK7	Q8TDX7	Y201	HSLVGTPYYMSPERI	77 / 9 AA	35
Phosphosite 9:	NEK9	Q8TD19	Y216	ETLVGTPYYMSPELC	77 / 9 AA	107
Phosphosite 10:	NEK2	P51955	Y181	KTFVGTPYYMSPEQM	77 / 9 AA	52
Phosphosite 11:	STK32B	Q9NY57	Y186	SMAGTKPYMAPEVFQ	62 / 8 AA	48
Phosphosite 12:	STK32A	Q8WU08	Y186	TMAGTKPYMAPEMFS	62 / 8 AA	46
Phosphosite 13:	ADRBK2	P35626	Y356	ASVGTHGYMAPEVLQ	62 / 8 AA	80
Phosphosite 14:	GRK2	P25098	Y356	ASVGTHGYMAPEVLQ	62 / 8 AA	80
Phosphosite 15:	MEK1	Q02750	S231	VGTRSYMSPERLQGT	100 / 6 AA	43
Phosphosite 16:	ALK7	Q8NER5	Y368	PKVGTKRYMAPEMLD	62 / 8 AA	55
Phosphosite 17:	ALK2	Q04771	Y381	PRVGTKRYMAPEVLD	62 / 8 AA	57
Phosphosite 18:	ALK1	P37023	Y375	PRVGTKRYMAPEVLD	62 / 8 AA	56
Phosphosite 19:	TGFBR1	P36897	Y378	HRVGTKRYMAPEVLD	62 / 8 AA	56
Phosphosite 20:	ALK4	P36896	Y380	QRVGTKRYMAPEVLD	62 / 8 AA	57