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:	PIK3CB
Human P-Site:	S521
P-Site Sequence:	KAAEIASSDSANVSS
UniProt:	P42338
Intern. Prot. ID:	IPI00031388

Protein Phosphosite Match	Human Protein Short Name	Human UniProt. ID	Phosphosite Number	Sequence	% Identity / # AA	Target Size kDa
Phosphosite 0:	PIK3CB	P42338	S521	KAAEIASSDSANVSS	100 / 9 AA	123
Phosphosite 1:	CSRNP2	Q9H175	S32	SDDEISSSDSADSCD	77 / 9 AA	60
Phosphosite 2:	CSRNP2	Q9H175	S31	NSDDEISSSDSADSC	87 / 8 AA	60
Phosphosite 3:	ZNF84	P51523	S75	VGDGEIPSSDSPEVW	75 / 8 AA	85
Phosphosite 4:	ZNF84	P51523	S76	GDGEIPSSDSPEVWK	75 / 8 AA	85
Phosphosite 5:	CASC5	Q8NG31	S1752	YPDEINSSDSINIET	77 / 9 AA	265
Phosphosite 6:	EHBP1L1	Q8N3D4	S781	LGTQEIASRDSGVPG	75 / 8 AA	162
Phosphosite 7:	MYO18B	Q8IUG5	S2090	ALEEVASSDSDTESV	85 / 7 AA	285
Phosphosite 8:	IGSF1	Q8N6C5	S820	DGSEIASSDRSWASP	100 / 6 AA	149
Phosphosite 9:	KIAA1908	Q96PY0	S247	AREEIPSSDSSAKPS	85 / 7 AA	28
Phosphosite 10:	IGSF1	Q8N6C5	S819	KDGSEIASSDRSWAS	100 / 6 AA	149
Phosphosite 11:	PIK3CB	P42338	S523	AEIASSDSANVSSRG	100 / 7 AA	123
Phosphosite 12:	KIAA1908	Q96PY0	S246	PAREEIPSSDSSAKP	75 / 8 AA	28
Phosphosite 13:	MYO18B	Q8IUG5	S2089	AALEEVASSDSDTES	85 / 7 AA	285
Phosphosite 14:	CSRNP3	Q8WYN3	S31	SDDEVSSSESADSGD	55 / 9 AA	65
Phosphosite 15:	CSRNP2	Q9H175	S30	SNSDDEISSSDSADS	85 / 7 AA	60
Phosphosite 16:	C10orf81	Q5SXH7	S225	ELDNIIASSDSGESI	85 / 7 AA	52
Phosphosite 17:	C10orf81	Q5SXH7	S226	LDNIIASSDSGESIE	85 / 7 AA	52
Phosphosite 18:	C18orf25	Q96B23	S327	EEINIASSDSEVEIV	100 / 6 AA	43
Phosphosite 19:	C18orf25	Q96B23	S326	NEEINIASSDSEVEI	100 / 6 AA	43
Phosphosite 20:	CaMK2-beta	Q13554	S395	VDGIKESSDSANTTI	100 / 6 AA	73