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:	S318
P-Site Sequence:	KAGKYTVSVFAKSTG
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	S318	KAGKYTVSVFAKSTG	100 / 9 AA	76
Phosphosite 1:	Btk	Q06187	T316	SSKAGKYTVSVFAKS	100 / 7 AA	76
Phosphosite 2:	COL12A1	Q99715	S974	PETKYRISVFATYSS	75 / 8 AA	333
Phosphosite 3:	ITK	Q08881	T274	SRTAGTYTVSVFTKA	85 / 7 AA	72
Phosphosite 4:	USP19	O94966	S869	GYARYSVSVFQPPFQ	71 / 7 AA	146
Phosphosite 5:	USP19	O94966	S867	LEGYARYSVSVFQPP	71 / 7 AA	146
Phosphosite 6:	LI-cad	Q12864	S548	FGVKYNASSFAKFTL	66 / 9 AA	92
Phosphosite 7:	Btk	Q06187	Y315	DSSKAGKYTVSVFAK	100 / 6 AA	76
Phosphosite 8:	TEC	P42680	S284	QPGLYTVSLYTKFGG	62 / 8 AA	74
Phosphosite 9:	Myomesin 1	P52179	S1662	ETSDFTVSVFIPEEE	71 / 7 AA	188
Phosphosite 10:	CHORDC1	Q9UHD1	Y246	GEVTISVYAKNSLPE	71 / 7 AA	37
Phosphosite 11:	Myomesin 1	P52179	T1660	GSETSDFTVSVFIPE	71 / 7 AA	188
Phosphosite 12:	ABCB1	P08183	S35	KEKKPTVSVFSMFRY	66 / 9 AA	141
Phosphosite 13:	C16orf63	Q96NB1	S71	NKYKYTASVLIAESG	71 / 7 AA	20
Phosphosite 14:	FN1	P02751	S1701	PGSEYTVSVVALHDD	75 / 8 AA	263
Phosphosite 15:	FRS3	O43559	S145	NALGYTVSSFSNGCP	62 / 8 AA	54
Phosphosite 16:	COL12A1	Q99715	S791	PDTKYEVSVIPEYFS	62 / 8 AA	333
Phosphosite 17:	COL12A1	Q99715	S1633	SQTLYTVSVSAVHDE	85 / 7 AA	333
Phosphosite 18:	IKKb	O14920	Y199	ELLEQQKYTVTVDYW	83 / 6 AA	87
Phosphosite 19:	IKKb	O14920	T200	LLEQQKYTVTVDYWS	83 / 6 AA	87
Phosphosite 20:	POLR2B	P30876	Y206	KMATNTVYVFAKKDS	85 / 7 AA	134