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:	S371
P-Site Sequence:	HNSAGLISRLKYPVS
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	S371	HNSAGLISRLKYPVS	100 / 9 AA	76
Phosphosite 1:	PAK4	O96013	S488	WMAPELISRLPYGPE	66 / 9 AA	64
Phosphosite 2:	C20orf112	Q96MY1	S118	CGADGLRSRVKYGVK	66 / 9 AA	47
Phosphosite 3:	BRCA2	P51587	S581	LKNAGLISTLKKKTN	87 / 8 AA	384
Phosphosite 4:	SG2NA	Q13033	S349	DVDQGLISKLKEQYK	85 / 7 AA	87
Phosphosite 5:	ANK3	Q12955	S1721	ALVNGSISPLKYPSS	75 / 8 AA	480
Phosphosite 6:	BAT2	P48634	S2088	RSFSGLNSRLKATPS	75 / 8 AA	229
Phosphosite 7:	PRRG2	O14669	S151	PQEAGLISPLSPLNP	85 / 7 AA	22
Phosphosite 8:	CAND1	Q86VP6	S381	TVSPALISRFKEREE	62 / 8 AA	136
Phosphosite 9:	C4orf23	Q8IYL2	S298	KSTLSLISIMKYSKA	62 / 8 AA	85
Phosphosite 10:	THEX1	Q8IV48	S246	LNIQCQLSRLKYPPF	83 / 6 AA	40
Phosphosite 11:	C20orf132	Q9H579	S414	NTVSLFISRPKYTDI	71 / 7 AA	55
Phosphosite 12:	THEX1	Q8IV48	Y250	CQLSRLKYPPFAKKW	100 / 5 AA	40
Phosphosite 13:	ITSN1	Q15811	S221	EWAVPQSSRLKYRQL	100 / 5 AA	195
Phosphosite 14:	Btk	Q06187	Y375	GLISRLKYPVSQQNK	100 / 5 AA	76
Phosphosite 15:	ATP5A1	P25705	S22	PRRAGLVSRNALGSS	83 / 6 AA	60
Phosphosite 16:	PDE1B	Q01064	S195	LTRHNLISRFKIPTV	71 / 7 AA	61
Phosphosite 17:	PRICKLE2	Q7Z3G6	S526	RTRHPISSLKYTEDM	83 / 6 AA	96
Phosphosite 18:	ZNF142	P52746	Y1497	ADPSRLKYHMRIHKE	100 / 5 AA	188
Phosphosite 19:	SEPP1	P49908	Y100	GISSRLKYTHLKNKV	100 / 5 AA	43
Phosphosite 20:	RasGRP1	O95267	S518	KDREGLISRDEITAY	83 / 6 AA	90