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:	PCSK1
Human P-Site:	S516
P-Site Sequence:	FEATIEYSRRGDLHV
UniProt:	P29120
Intern. Prot. ID:

Protein Phosphosite Match	Human Protein Short Name	Human UniProt. ID	Phosphosite Number	Sequence	% Identity / # AA	Target Size kDa
Phosphosite 0:	PCSK1	P29120	S516	FEATIEYSRRGDLHV	100 / 9 AA	84
Phosphosite 1:	PCSK1	P29120	Y515	QFEATIEYSRRGDLH	100 / 8 AA	84
Phosphosite 2:	PCSK4	Q6UW60	S501	AQLTLSYSRRGDLEI	77 / 9 AA	83
Phosphosite 3:	FRS2	Q8WU20	S410	SAHKIEYSRRRDCTP	77 / 9 AA	57
Phosphosite 4:	AFM	P43652	Y358	FAKFTFEYSRRHPDL	85 / 7 AA	69
Phosphosite 5:	AFM	P43652	S359	AKFTFEYSRRHPDLS	85 / 7 AA	69
Phosphosite 6:	FRS2	Q8WU20	Y409	ASAHKIEYSRRRDCT	85 / 7 AA	57
Phosphosite 7:	GluR2	P42262	S322	RKQRIEISRRGNAGD	75 / 8 AA	99
Phosphosite 8:	AGA (aspartylglucosaminidase)	P20933	Y275	PSYQAVEYMRRGEDP	62 / 8 AA	37
Phosphosite 9:	RPAP3	Q9H6T3	S205	RSYTKAYSRRGAARF	66 / 9 AA	76
Phosphosite 10:	SLU7	O95391	Y400	QTEDYVEYSRHGTVI	71 / 7 AA	68
Phosphosite 11:	CTH	P32929	S61	QHSGFEYSRSGNPTR	62 / 8 AA	45
Phosphosite 12:	RPAP3	Q9H6T3	Y204	NRSYTKAYSRRGAAR	75 / 8 AA	76
Phosphosite 13:	PSMB1	P20618	Y125	AMLSTILYSRRFFPY	85 / 7 AA	26
Phosphosite 14:	GluR4	P48058	S323	RRQKIDISRRGNAGD	55 / 9 AA	101
Phosphosite 15:	PGS1	Q32NB8	Y457	ERVQLQEYWRRGWTF	83 / 6 AA	63
Phosphosite 16:	GluR1	P42261	S315	RRQRIDISRRGNAGD	62 / 8 AA	102
Phosphosite 17:	CTH	P32929	S63	SGFEYSRSGNPTRNC	71 / 7 AA	45
Phosphosite 18:	TTLL4	Q14679	S1018	VEMEDEFSRRGQFER	71 / 7 AA	133
Phosphosite 19:	NTNG2	Q96CW9	Y199	RVLCTEEYSRWAGSK	62 / 8 AA	60
Phosphosite 20:	CCDC106	Q9BWC9	S247	KERLLEYSRRCFLAL	83 / 6 AA	32