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:	S503
P-Site Sequence:	KGKVPAGSDVISEYV
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	S503	KGKVPAGSDVISEYV	100 / 9 AA	74
Phosphosite 1:	HERV-K_19q12 provirus ancestral Gag polyprotein	Q9YNA8	S503	KGKVPAGSDVISEYV	100 / 9 AA	74
Phosphosite 2:	ERVK6	Q7LDI9	S503	KGKVPAGSDVISEYV	100 / 9 AA	74
Phosphosite 3:	HERV-K_22q11.21 provirus ancestral Gag polyprotein	P63145	S503	KGKVPAGSDVISEYV	100 / 9 AA	74
Phosphosite 4:	HERV-K_1q22 provirus ancestral Gag polyprotein	P63130	S503	KGKVPAGSDVISEYV	100 / 9 AA	74
Phosphosite 5:	HERV-K_6q14.1 provirus ancestral Gag-Pol polyprotein	P63128	S503	KGKVPAGSDVISEYV	100 / 9 AA	124
Phosphosite 6:	HERV-K_6q14.1 provirus ancestral Gag polyprotein	P63126	S503	KGKVPAGSDVISEYV	100 / 9 AA	74
Phosphosite 7:	HERV-K_8p23.1 provirus ancestral Gag polyprotein	P62685	S503	KGKVPAGSDVISEYV	100 / 9 AA	72
Phosphosite 8:	HERV-K_19p13.11 provirus ancestral Gag polyprotein	P62684	S503	KGKVPAGSDVISEYV	100 / 9 AA	74
Phosphosite 9:	HERV-K_12q14.1 provirus ancestral Gag polyprotein	P62683	S503	KGKVPAGSDVISEYV	100 / 9 AA	74
Phosphosite 10:	TRIOBP	Q9H2D6	S1925	AGEQRAGSEVISRGG	75 / 8 AA	261
Phosphosite 11:	TXNDC11	Q6PKC3	S30	GGGGPAGSDCLSSSP	75 / 8 AA	111
Phosphosite 12:	C10orf76	Q5T2E6	S348	LGTTPPSSDVISSVE	75 / 8 AA	79
Phosphosite 13:	PITRM1	Q5JRX3	S836	DAHVPHGSQVIRKLV	66 / 9 AA	117
Phosphosite 14:	HCFC1	P51610	S674	PISVPGGSALISNLG	66 / 9 AA	209
Phosphosite 15:	RIOK2	Q9BVS4	S442	QGGVPAGSDEYEDEC	100 / 6 AA	63
Phosphosite 16:	ZNF488	Q96MN9	S145	IPRGPAGSKVFSVWP	75 / 8 AA	37
Phosphosite 17:	IVD	P26440	S171	MSEPNAGSDVVSMKL	85 / 7 AA	46
Phosphosite 18:	SIL1	Q9H173	S89	GQAVPAGSHVRLNLQ	85 / 7 AA	52
Phosphosite 19:	SHANK2	Q9UPX8	S431	SRCFPAGSDMNSVYE	75 / 8 AA	159
Phosphosite 20:	SYDE2	Q5VT97	S87	FRDPAGSSVIRSGKG	85 / 7 AA	125