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:	PCSK4
Human P-Site:	S426
P-Site Sequence:	NGVGRQVSHHYGYGL
UniProt:	Q6UW60
Intern. Prot. ID:

Protein Phosphosite Match	Human Protein Short Name	Human UniProt. ID	Phosphosite Number	Sequence	% Identity / # AA	Target Size kDa
Phosphosite 0:	PCSK4	Q6UW60	S426	NGVGRQVSHHYGYGL	100 / 9 AA	83
Phosphosite 1:	FURIN	P09958	S421	NGVGRKVSHSYGYGL	77 / 9 AA	87
Phosphosite 2:	TRIM32	Q13049	S566	GQLGRQISHFFSENE	55 / 9 AA	72
Phosphosite 3:	KIAA1462	Q9P266	S542	GHTGRQVSSPYSQGE	66 / 9 AA	148
Phosphosite 4:	SPTLC1	O15269	T290	GEHGRGVTEHYGINI	66 / 9 AA	53
Phosphosite 5:	FNIP1	Q8TF40	S960	HDMTRQVSSYYGGEQ	75 / 8 AA	131
Phosphosite 6:	SPATA21	Q7Z572	S421	KMVRRQPSNHYALDQ	62 / 8 AA	52
Phosphosite 7:	ER-beta	Q92731	S96	LVVHRQLSHLYAEPQ	62 / 8 AA	59
Phosphosite 8:	FLG	P20930	S855	SRRGRQGSHHEQSVD	85 / 7 AA	435
Phosphosite 9:	FLG	P20930	S530	SRGGRQGSHHEQSVN	85 / 7 AA	435
Phosphosite 10:	FLG	P20930	S495	STGGRQGSHHEQARD	85 / 7 AA	435
Phosphosite 11:	FLG	P20930	S1179	RRGGRQGSHHEQSVD	85 / 7 AA	435
Phosphosite 12:	FLG	P20930	S2441	STGGRQGSHHKQARD	85 / 7 AA	435
Phosphosite 13:	USP15	Q9Y4E8	S881	RYNLIAVSNHYGGMG	83 / 6 AA	112
Phosphosite 14:	USP8	P40818	S1057	KYNLFSVSNHYGGLD	83 / 6 AA	128
Phosphosite 15:	AARS2	Q5JTZ9	S126	EDVGRDLSHHTFFEM	71 / 7 AA	107
Phosphosite 16:	STRC	Q7RTU9	S1584	RQSGRHVSHLDFVHL	83 / 6 AA	193
Phosphosite 17:	STRCP	A6NGW2	S1581	RQSGRHVSHLDFVHL	83 / 6 AA	192
Phosphosite 18:	APOB	P04114	S2136	FNWERQVSHAKEKLT	83 / 6 AA	516
Phosphosite 19:	SEC31B	Q9NQW1	S952	LGPGRMVSHTPAPPA	83 / 6 AA	129
Phosphosite 20:	ST8SIA6	P61647	Y359	DIPVSHHYYDNKLPK	100 / 5 AA	45