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:	T20
P-Site Sequence:	RSQQKKKTSPLNFKK
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	T20	RSQQKKKTSPLNFKK	100 / 9 AA	76
Phosphosite 1:	TEC	P42680	S22	SQQKKKTSPLNYKER	100 / 8 AA	74
Phosphosite 2:	Btk	Q06187	S21	SQQKKKTSPLNFKKR	100 / 8 AA	76
Phosphosite 3:	SMARCA1	P28370	T118	PSAQKSPTSPLNMKL	77 / 9 AA	123
Phosphosite 4:	exportin 7	Q9UIA9	T959	RSTKKRTTPLNQESD	75 / 8 AA	124
Phosphosite 5:	Per3	P56645	T378	IGRHKVRTSPLNEDV	66 / 9 AA	132
Phosphosite 6:	ITK	Q08881	T21	KSQQKRRTSPSNFKV	66 / 9 AA	72
Phosphosite 7:	PDE6C	P51160	S617	NNLYQMKSTSPLARL	75 / 8 AA	99
Phosphosite 8:	UBR4	Q5T4S7	T4116	LSRRGKRTSPLDLKL	71 / 7 AA	574
Phosphosite 9:	PAPOLA	P51003	T544	SPTSATKTSPLNSSG	100 / 6 AA	83
Phosphosite 10:	PAPOLA	P51003	S545	PTSATKTSPLNSSGS	100 / 6 AA	83
Phosphosite 11:	ME2	P23368	S77	RNLKKMTSPLEKYIY	75 / 8 AA	65
Phosphosite 12:	UBR4	Q5T4S7	S4117	SRRGKRTSPLDLKLG	71 / 7 AA	574
Phosphosite 13:	CEBPG	P53567	S55	PSKQSKKSSPMDRNS	55 / 9 AA	16
Phosphosite 14:	Per3	P56645	S379	GRHKVRTSPLNEDVF	75 / 8 AA	132
Phosphosite 15:	TDRD6	O60522	T1031	KVLLNLKTSPLNPGT	100 / 6 AA	237
Phosphosite 16:	C11orf60	Q9NQC8	T20	NNKEKKKTSQLTPQR	75 / 8 AA	34
Phosphosite 17:	CEP350	Q5VT06	T1255	GRSQKTPTSPLSPSS	66 / 9 AA	351
Phosphosite 18:	DCHS2	Q6V1P9	T2578	NNYEEKKTSSLDADL	55 / 9 AA	322
Phosphosite 19:	SAV1	Q9H4B6	T26	GKYVKKETSPLLRNL	85 / 7 AA	45
Phosphosite 20:	SAV1	Q9H4B6	S27	KYVKKETSPLLRNLM	85 / 7 AA	45