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:	S123
P-Site Sequence:	NENTRKKSQKETESL
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	S123	NENTRKKSQKETESL	100 / 9 AA	74
Phosphosite 1:	HERV-K_19q12 provirus ancestral Gag polyprotein	Q9YNA8	S123	NENTRKKSQKETESL	100 / 9 AA	74
Phosphosite 2:	ERVK6	Q7LDI9	S123	NENTRKKSQKETEGL	100 / 9 AA	74
Phosphosite 3:	HERV-K_22q11.21 provirus ancestral Gag polyprotein	P63145	S123	NEKTRKKSQKETESL	100 / 9 AA	74
Phosphosite 4:	HERV-K_1q22 provirus ancestral Gag polyprotein	P63130	S123	NENTRKKSQKETEGL	100 / 9 AA	74
Phosphosite 5:	HERV-K_6q14.1 provirus ancestral Gag-Pol polyprotein	P63128	S123	NEKTRKKSQKETESL	100 / 9 AA	124
Phosphosite 6:	HERV-K_6q14.1 provirus ancestral Gag polyprotein	P63126	S123	NEKTRKKSQKETESL	100 / 9 AA	74
Phosphosite 7:	HERV-K_8p23.1 provirus ancestral Gag polyprotein	P62685	S123	NENTRKKSQKETESL	100 / 9 AA	72
Phosphosite 8:	HERV-K_19p13.11 provirus ancestral Gag polyprotein	P62684	S123	NEKTRKKSQKETESL	100 / 9 AA	74
Phosphosite 9:	HERV-K_12q14.1 provirus ancestral Gag polyprotein	P62683	S123	NENTRKKSQKETEGL	100 / 9 AA	74
Phosphosite 10:	FAM184B	Q9ULE4	S472	LEEVRKKSEKEIKQL	66 / 9 AA	121
Phosphosite 11:	ERVK5	Q9HDB9	S123	NEKTGRKSQKETESL	77 / 9 AA	74
Phosphosite 12:	RRP7B	Q9NSQ0	S58	ERERRKRSQKELLNY	85 / 7 AA	13
Phosphosite 13:	TRDN	Q13061	S339	KEDIKKKSEKETAID	66 / 9 AA	82
Phosphosite 14:	SCAF1	Q9H7N4	S519	GPPTRKKSRRERKRS	75 / 8 AA	139
Phosphosite 15:	C8orf33	Q9H7E9	S201	DGATRKKSQRVCRPR	85 / 7 AA	25
Phosphosite 16:	KIAA1009	Q5TB80	S585	CLSTRKKSENPTETD	66 / 9 AA	162
Phosphosite 17:	SNUPN	O95149	S315	QIMEHKKSQKEGMKE	85 / 7 AA	41
Phosphosite 18:	mGluR7	Q14831	T535	KPGQRKKTQKGTPCC	75 / 8 AA	102
Phosphosite 19:	FOXN3	O00409	S401	EEDDRKHSQKEPKDS	85 / 7 AA	54
Phosphosite 20:	CABP4	P57796	S42	PPLTRKRSKKERGLR	75 / 8 AA	30