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:	Y255
P-Site Sequence:	QPQHIHIYSASWGPE
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	Y255	QPQHIHIYSASWGPE	100 / 9 AA	83
Phosphosite 1:	FURIN	P09958	Y250	NPNHIHIYSASWGPE	100 / 9 AA	87
Phosphosite 2:	PCSK5	Q92824	Y268	NPQHVHIYSASWGPD	88 / 9 AA	102
Phosphosite 3:	PCSK1	P29120	Y264	NPGHVDIYSASWGPN	77 / 9 AA	84
Phosphosite 4:	PCSK6	P29122	Y302	RPNYIDIYSASWGPD	77 / 9 AA	106
Phosphosite 5:	PCSK2	P16519	S266	PQLIDIYSASWGPTD	87 / 8 AA	71
Phosphosite 6:	PCSK2	P16519	Y265	MPQLIDIYSASWGPT	87 / 8 AA	71
Phosphosite 7:	PCSK1	P29120	S265	PGHVDIYSASWGPND	75 / 8 AA	84
Phosphosite 8:	PCSK1	P29120	S267	HVDIYSASWGPNDDG	100 / 6 AA	84
Phosphosite 9:	PCSK2	P16519	S268	LIDIYSASWGPTDNG	100 / 6 AA	71
Phosphosite 10:	Agbl3	Q8NEM8	Y874	TCRNIKKYSTSWTAP	55 / 9 AA	116
Phosphosite 11:	TRIM55	Q9BYV6	S539	EPARHIFSFSWLNSL	71 / 7 AA	60
Phosphosite 12:	SPPL2A	Q8TCT8	Y161	DNITVKMYSPSWPNF	50 / 8 AA	58
Phosphosite 13:	NSMAF	Q92636	S731	DNRLYSASWDSTVKV	83 / 6 AA	104
Phosphosite 14:	SgK307	Q8IWB6	Y174	DSPQRLVYSPSWCGG	44 / 9 AA	168
Phosphosite 15:	WDR12	Q9GZL7	S273	SDAEEICSASWDHTI	71 / 7 AA	48
Phosphosite 16:	DDB2	Q92466	Y315	QKSEIRVYSASQWDC	71 / 7 AA	48
Phosphosite 17:	BUB1	O43683	S672	ALSSHMYSASLLRLS	71 / 7 AA	122
Phosphosite 18:	TTLL5	Q6EMB2	S701	DSGGQTFSASWAAKE	57 / 7 AA	143
Phosphosite 19:	DDB2	Q92466	S316	KSEIRVYSASQWDCP	71 / 7 AA	48
Phosphosite 20:	C20orf26	Q8NHU2	Y916	GLHPDPIYSASFTTP	71 / 7 AA	141