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:	Btk
Human P-Site:	Y268
P-Site Sequence:	EGYIPSNYVTEAEDS
UniProt:	Q06187
Intern. Prot. ID:	IPI00029132

Protein Phosphosite Match	Human Protein Short Name	Human UniProt. ID	Phosphosite Number	Sequence	% Identity / # AA	Target Size kDa
Phosphosite 0:	Btk	Q06187	Y268	EGYIPSNYVTEAEDS	100 / 9 AA	76
Phosphosite 1:	TXK	P42681	Y136	EGLIPSNYVTENKIT	100 / 8 AA	61
Phosphosite 2:	OSTF1	Q92882	Y65	TGLIPSNYVAEQAES	87 / 8 AA	24
Phosphosite 3:	FRK	P42685	Y104	QGYIPSNYVAEDRSL	87 / 8 AA	58
Phosphosite 4:	Nck1	P16333	Y159	VGWFPSNYVTEEGDS	87 / 8 AA	43
Phosphosite 5:	TEC	P42680	Y233	EGYIPSNYVTGKKSN	87 / 8 AA	74
Phosphosite 6:	TXK	P42681	S134	GNEGLIPSNYVTENK	100 / 7 AA	61
Phosphosite 7:	Btk	Q06187	S266	GQEGYIPSNYVTEAE	100 / 7 AA	76
Phosphosite 8:	TEC	P42680	S231	GNEGYIPSNYVTGKK	100 / 7 AA	74
Phosphosite 9:	YES1	P07947	Y146	NGYIPSNYVAPADSI	77 / 9 AA	61
Phosphosite 10:	Btk	Q06187	T270	YIPSNYVTEAEDSIE	100 / 7 AA	76
Phosphosite 11:	OSTF1	Q92882	S63	GRTGLIPSNYVAEQA	85 / 7 AA	24
Phosphosite 12:	Lyn	P07948	Y117	EGFIPSNYVAKLNTL	85 / 7 AA	59
Phosphosite 13:	Fgr	P09769	S130	GKTGCIPSNYVAPVD	85 / 7 AA	59
Phosphosite 14:	Lyn	P07948	S115	KKEGFIPSNYVAKLN	85 / 7 AA	59
Phosphosite 15:	Hck	P08631	Y132	EGYIPSNYVARVDSL	85 / 7 AA	60
Phosphosite 16:	Src	P12931	Y139	TGYIPSNYVAPSDSI	85 / 7 AA	60
Phosphosite 17:	MLK1	P80192	S108	QRVGIFPSNYVTPRS	85 / 7 AA	122
Phosphosite 18:	FRK	P42685	S102	QLQGYIPSNYVAEDR	85 / 7 AA	58
Phosphosite 19:	Src	P12931	S137	GQTGYIPSNYVAPSD	85 / 7 AA	60
Phosphosite 20:	Hck	P08631	S130	RKEGYIPSNYVARVD	85 / 7 AA	60