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:	S541
P-Site Sequence:	RISEIIDSRRRLEED
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	S541	RISEIIDSRRRLEED	100 / 9 AA	84
Phosphosite 1:	POLS	Q5XG87	Y294	VTQEVIDYRRWIKEK	55 / 9 AA	60
Phosphosite 2:	NOL4	O94818	S329	KIQAIIDSCRRQFPE	75 / 8 AA	58
Phosphosite 3:	C6orf194	Q5M9Q1	S16	YSEDIVGSRRRRRSS	62 / 8 AA	46
Phosphosite 4:	TREK-2	P57789	T354	VTAEFRETRRRLSVE	55 / 9 AA	60
Phosphosite 5:	C3orf25	Q6NXP0	S386	DMRELIDSARRHNFL	75 / 8 AA	67
Phosphosite 6:	NT5C	Q8TCD5	S193	NWREILDSKRGAAQR	71 / 7 AA	23
Phosphosite 7:	LRRC18	Q8N456	S191	ESEIFIDSIRRLENL	75 / 8 AA	30
Phosphosite 8:	SPIRE1	Q08AE8	S715	FISEIISSSRRSLVL	75 / 8 AA	86
Phosphosite 9:	SPIRE1	Q08AE8	S714	KFISEIISSSRRSLV	75 / 8 AA	86
Phosphosite 10:	MPZL1	O95297	S16	AVIAAPDSRRWLWSV	83 / 6 AA	29
Phosphosite 11:	PRR18	Q8N4B5	S288	GRAGALDSRRHLSTL	71 / 7 AA	31
Phosphosite 12:	DSTYK	Q6XUX3	S291	LGSEIIDSSTRRMES	75 / 8 AA	105
Phosphosite 13:	TM7SF3	Q9NS93	S188	DAGTDQDSRWRLQYD	83 / 6 AA	64
Phosphosite 14:	ENO1	P06733	S14	HAREIFDSRGNPTVE	83 / 6 AA	47
Phosphosite 15:	ARHGAP21	Q5T5U3	S1686	SLTSSLDSRRQLFSS	71 / 7 AA	217
Phosphosite 16:	ENO3	P13929	S14	FAREILDSRGNPTVE	83 / 6 AA	47
Phosphosite 17:	ENO2	P09104	S14	WAREILDSRGNPTVE	83 / 6 AA	47
Phosphosite 18:	PAPSS2	O95340	T425	HALLMQDTRRRLLER	83 / 6 AA	70
Phosphosite 19:	CDK5RAP2	Q96SN8	S1196	LAPEMIDSRVLENLK	83 / 6 AA	215
Phosphosite 20:	FHAD1	B1AJZ9	S464	EEKLQEDSRRKLLQL	83 / 6 AA	162