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:	PIK3CA
Human P-Site:	Y631
P-Site Sequence:	TDDKLSQYLIQLVQV
UniProt:	P42336
Intern. Prot. ID:	IPI00031386

Protein Phosphosite Match	Human Protein Short Name	Human UniProt. ID	Phosphosite Number	Sequence	% Identity / # AA	Target Size kDa
Phosphosite 0:	PIK3CA	P42336	Y631	TDDKLSQYLIQLVQV	100 / 9 AA	124
Phosphosite 1:	PIK3CB	P42338	Y638	SDEELSQYLLQLVQV	87 / 8 AA	123
Phosphosite 2:	ZNF189	O75820	T329	GKAFRLSTYLIQHQK	75 / 8 AA	73
Phosphosite 3:	ZNF189	O75820	Y330	KAFRLSTYLIQHQKI	75 / 8 AA	73
Phosphosite 4:	MAK16	Q9BXY0	Y119	RFTKITQYLIRIRKL	55 / 9 AA	35
Phosphosite 5:	HELZ	P42694	Y777	VTLNTSQYLCQLDLE	85 / 7 AA	219
Phosphosite 6:	COL29A1	A8TX70	Y1377	LGKKLSQYLGNIAER	100 / 6 AA	290
Phosphosite 7:	ASCC3	Q8N3C0	Y876	THDKLSHYLTLLTQR	66 / 9 AA	251
Phosphosite 8:	GCN1L1	Q92616	Y1247	ALNKLSQYLDSSQVK	100 / 6 AA	293
Phosphosite 9:	COL29A1	A8TX70	S1375	RELGKKLSQYLGNIA	100 / 6 AA	290
Phosphosite 10:	GCN1L1	Q92616	S1245	ALALNKLSQYLDSSQ	100 / 6 AA	293
Phosphosite 11:	AKD1	Q5TCS8	Y263	MAEHNPQYLIELNGN	71 / 7 AA	87
Phosphosite 12:	KIAA0913	A7E2V4	Y238	QLQKFAQYLISELPQ	71 / 7 AA	197
Phosphosite 13:	MAK16	Q9BXY0	T117	KQRFTKITQYLIRIR	71 / 7 AA	35
Phosphosite 14:	SIPA1L1	O43166	S244	GPTPTKLSDFLITGG	71 / 7 AA	200
Phosphosite 15:	CYB5R1	Q9UHQ9	Y134	EGGKMSQYLDSLKVG	66 / 9 AA	34
Phosphosite 16:	ARHGAP27	Q6ZUM4	Y590	RSRDGSEYLIQHDSE	83 / 6 AA	98
Phosphosite 17:	GALNT6	Q8NCL4	Y231	LKEKLEQYVKQLQVV	66 / 9 AA	71
Phosphosite 18:	ASCC3	Q8N3C0	S874	ITTHDKLSHYLTLLT	71 / 7 AA	251
Phosphosite 19:	C7orf62	Q8TBZ9	Y184	QTHKLSLYLCQTMKV	75 / 8 AA	29
Phosphosite 20:	CYB5R1	Q9UHQ9	S132	FPEGGKMSQYLDSLK	83 / 6 AA	34