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:	T270
P-Site Sequence:	YIPSNYVTEAEDSIE
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	T270	YIPSNYVTEAEDSIE	100 / 9 AA	76
Phosphosite 1:	Btk	Q06187	Y268	EGYIPSNYVTEAEDS	100 / 7 AA	76
Phosphosite 2:	Nck1	P16333	T161	WFPSNYVTEEGDSPL	77 / 9 AA	43
Phosphosite 3:	FBXO18	Q8NFZ0	T826	SGFKRYVTAAEDKEL	85 / 7 AA	118
Phosphosite 4:	TXK	P42681	Y136	EGLIPSNYVTENKIT	100 / 6 AA	61
Phosphosite 5:	TXK	P42681	T138	LIPSNYVTENKITNL	100 / 6 AA	61
Phosphosite 6:	Nck1	P16333	Y159	VGWFPSNYVTEEGDS	100 / 6 AA	43
Phosphosite 7:	OTUD5	Q96G74	Y261	NADYFSNYVTEDFTT	100 / 6 AA	61
Phosphosite 8:	TOP3B	O95985	T495	TNPPDYLTEAELITL	62 / 8 AA	97
Phosphosite 9:	PTPN3	P26045	T409	EMTYITETEDVFYTY	71 / 7 AA	104
Phosphosite 10:	ZCCHC7	Q8N3Z6	T202	VGCENSVTEGEDGIN	75 / 8 AA	63
Phosphosite 11:	PLAA	Q9Y263	T248	PNCRDFVTTAEDRSL	55 / 9 AA	87
Phosphosite 12:	HMFN0672	Q68CJ6	Y461	KKRTVTKYVTEAFGL	71 / 7 AA	95
Phosphosite 13:	PLAA	Q9Y263	T249	NCRDFVTTAEDRSLR	62 / 8 AA	87
Phosphosite 14:	TFAP2B	Q92481	T422	TALQNYLTEALKGMD	83 / 6 AA	50
Phosphosite 15:	AP-2 alpha	P05549	T403	TALQNYLTEALKAMD	83 / 6 AA	48
Phosphosite 16:	NSMAF	Q92636	Y501	KDALESNYVSEHLHE	83 / 6 AA	104
Phosphosite 17:	OSTF1	Q92882	Y65	TGLIPSNYVAEQAES	83 / 6 AA	24
Phosphosite 18:	FRK	P42685	Y104	QGYIPSNYVAEDRSL	83 / 6 AA	58
Phosphosite 19:	PPP2R2C	Q9Y2T4	Y20	SFLRDHSYVTEADII	83 / 6 AA	52
Phosphosite 20:	ZKSCAN2	Q63HK3	Y305	RSILRSNYVKEKSVH	83 / 6 AA	111