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:	HERV-K_5q33.3 provirus ancestral Gag polyprotein
Human P-Site:	S10
P-Site Sequence:	QTKSKIKSKYASYLS
UniProt:	P87889
Intern. Prot. ID:

Protein Phosphosite Match	Human Protein Short Name	Human UniProt. ID	Phosphosite Number	Sequence	% Identity / # AA	Target Size kDa
Phosphosite 0:	HERV-K_5q33.3 provirus ancestral Gag polyprotein	P87889	S10	QTKSKIKSKYASYLS	100 / 9 AA	74
Phosphosite 1:	HERV-K_19q12 provirus ancestral Gag polyprotein	Q9YNA8	S10	QTKSKIKSKYASYLS	100 / 9 AA	74
Phosphosite 2:	ERVK6	Q7LDI9	S10	QTKSKIKSKYASYLS	100 / 9 AA	74
Phosphosite 3:	HERV-K_22q11.21 provirus ancestral Gag polyprotein	P63145	S10	QTKSKIKSKYASYLS	100 / 9 AA	74
Phosphosite 4:	HERV-K_1q22 provirus ancestral Gag polyprotein	P63130	S10	QTKSKIKSKYASYLS	100 / 9 AA	74
Phosphosite 5:	HERV-K_6q14.1 provirus ancestral Gag-Pol polyprotein	P63128	S10	QTKSKIKSKYASYLS	100 / 9 AA	124
Phosphosite 6:	HERV-K_6q14.1 provirus ancestral Gag polyprotein	P63126	S10	QTKSKIKSKYASYLS	100 / 9 AA	74
Phosphosite 7:	HERV-K_8p23.1 provirus ancestral Gag polyprotein	P62685	S10	QTKSKIKSKYASYLS	100 / 9 AA	72
Phosphosite 8:	HERV-K_19p13.11 provirus ancestral Gag polyprotein	P62684	S10	QTKSKIKSKYASYLS	100 / 9 AA	74
Phosphosite 9:	HERV-K_12q14.1 provirus ancestral Gag polyprotein	P62683	S10	QTKSKIKSKYASYLS	100 / 9 AA	74
Phosphosite 10:	ERVK5	Q9HDB9	S10	QTKSKTKSKYASYLS	88 / 9 AA	74
Phosphosite 11:	HERV-K_19q12 provirus ancestral Gag polyprotein	Q9YNA8	Y12	KSKIKSKYASYLSFI	100 / 7 AA	74
Phosphosite 12:	ERVK6	Q7LDI9	Y12	KSKIKSKYASYLSFI	100 / 7 AA	74
Phosphosite 13:	HERV-K_5q33.3 provirus ancestral Gag polyprotein	P87889	Y12	KSKIKSKYASYLSFI	100 / 7 AA	74
Phosphosite 14:	HERV-K_22q11.21 provirus ancestral Gag polyprotein	P63145	Y12	KSKIKSKYASYLSFI	100 / 7 AA	74
Phosphosite 15:	HERV-K_1q22 provirus ancestral Gag polyprotein	P63130	Y12	KSKIKSKYASYLSFI	100 / 7 AA	74
Phosphosite 16:	HERV-K_6q14.1 provirus ancestral Gag-Pol polyprotein	P63128	Y12	KSKIKSKYASYLSFI	100 / 7 AA	124
Phosphosite 17:	HERV-K_6q14.1 provirus ancestral Gag polyprotein	P63126	Y12	KSKIKSKYASYLSFI	100 / 7 AA	74
Phosphosite 18:	HERV-K_8p23.1 provirus ancestral Gag polyprotein	P62685	Y12	KSKIKSKYASYLSFI	100 / 7 AA	72
Phosphosite 19:	HERV-K_19p13.11 provirus ancestral Gag polyprotein	P62684	Y12	KSKIKSKYASYLSFI	100 / 7 AA	74
Phosphosite 20:	HERV-K_12q14.1 provirus ancestral Gag polyprotein	P62683	Y12	KSKIKSKYASYLSFI	100 / 7 AA	74