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:	PIK3R1
Human P-Site:	S651
P-Site Sequence:	GTFLVRESSKQGCYA
UniProt:	P27986
Intern. Prot. ID:	IPI00021448

Protein Phosphosite Match	Human Protein Short Name	Human UniProt. ID	Phosphosite Number	Sequence	% Identity / # AA	Target Size kDa
Phosphosite 0:	PIK3R1	P27986	S651	GTFLVRESSKQGCYA	100 / 9 AA	84
Phosphosite 1:	PIK3R1	P27986	S652	TFLVRESSKQGCYAC	100 / 8 AA	84
Phosphosite 2:	PIK3R3	Q92569	S385	GAFLIRESSKKGCYA	77 / 9 AA	54
Phosphosite 3:	Btk	Q06187	S309	GGFIVRDSSKAGKYT	66 / 9 AA	76
Phosphosite 4:	LCP2	Q13094	S450	GTFLVRDSSKKTTTN	75 / 8 AA	60
Phosphosite 5:	PIK3R2	O00459	S649	GTFLIRESSQRGCYA	66 / 9 AA	82
Phosphosite 6:	PIK3R3	Q92569	S386	AFLIRESSKKGCYAC	75 / 8 AA	54
Phosphosite 7:	Btk	Q06187	S310	GFIVRDSSKAGKYTV	75 / 8 AA	76
Phosphosite 8:	CTK	P42679	S149	GLFLVRESARHPGDY	62 / 8 AA	56
Phosphosite 9:	C1orf125	Q5T1B0	S908	VLSSWRESAKQGTLA	85 / 7 AA	118
Phosphosite 10:	AFF4	Q9UHB7	S801	PSSNRESSKQSAAKE	85 / 7 AA	127
Phosphosite 11:	ZIC1	Q15915	S387	HMKVHESSSQGSQPS	75 / 8 AA	48
Phosphosite 12:	ADAM11	O75078	S57	PSRLVRESSGGEVRK	100 / 6 AA	83
Phosphosite 13:	RAI1	Q7Z5J4	S636	APSLVKDSSKPPFSL	62 / 8 AA	203
Phosphosite 14:	AFF4	Q9UHB7	S800	KPSSNRESSKQSAAK	85 / 7 AA	127
Phosphosite 15:	PNN	Q9H307	S375	EETEVRESEKQQDSQ	85 / 7 AA	82
Phosphosite 16:	ZIC1	Q15915	S386	KHMKVHESSSQGSQP	75 / 8 AA	48
Phosphosite 17:	ATAD3A	Q9NVI7	T336	KPSLVRETSRITVLE	71 / 7 AA	71
Phosphosite 18:	ATAD3B	Q5T9A4	T288	KPSLVRETSRITVLE	71 / 7 AA	73
Phosphosite 19:	ATAD3C	Q5T2N8	T112	KPSLVRETSRITVLE	71 / 7 AA	46
Phosphosite 20:	BLVRB	P30043	S37	VTVLVRDSSRLPSEG	71 / 7 AA	22