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_8p23.1 provirus ancestral Pol protein
Human P-Site:	S877
P-Site Sequence:	AETETPQSSTVDSQD
UniProt:	P63133
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_8p23.1 provirus ancestral Pol protein	P63133	S877	AETETPQSSTVDSQD	100 / 9 AA	108
Phosphosite 1:	ERVK6	Q9WJR5	S880	AETETPQSSTVDSQD	100 / 9 AA	108
Phosphosite 2:	HERV-K_11q22.1 provirus ancestral Pol protein	P63136	S875	AETETPQSSTVDSQD	100 / 9 AA	107
Phosphosite 3:	HERV-K_19p13.11 provirus ancestral Pol protein	P63132	S877	AETETPQSSTVDSQD	100 / 9 AA	108
Phosphosite 4:	ERVK6	Q9WJR5	S881	ETETPQSSTVDSQDE	100 / 8 AA	108
Phosphosite 5:	HERV-K_11q22.1 provirus ancestral Pol protein	P63136	S876	ETETPQSSTVDSQDE	100 / 8 AA	107
Phosphosite 6:	HERV-K_8p23.1 provirus ancestral Pol protein	P63133	S878	ETETPQSSTVDSQDE	100 / 8 AA	108
Phosphosite 7:	HERV-K_19p13.11 provirus ancestral Pol protein	P63132	S878	ETETPQSSTVDSQDE	100 / 8 AA	108
Phosphosite 8:	ERVK6	Q9BXR3	S877	AETETSQSSTVDSQD	88 / 9 AA	108
Phosphosite 9:	DBNDD2	Q9BQY9	S192	PPPTPQSSGVDNHLE	87 / 8 AA	28
Phosphosite 10:	ERVK6	Q9BXR3	S878	ETETSQSSTVDSQDE	87 / 8 AA	108
Phosphosite 11:	DBNDD2	Q9BQY9	S191	DPPPTPQSSGVDNHL	87 / 8 AA	28
Phosphosite 12:	SLC9A3	P48764	S576	NVDFTPRSSTVEASV	75 / 8 AA	93
Phosphosite 13:	SLC9A3	P48764	S577	VDFTPRSSTVEASVS	75 / 8 AA	93
Phosphosite 14:	CCDC125	Q86Z20	S99	ISNYRRQSSTVDSNS	85 / 7 AA	59
Phosphosite 15:	CCDC125	Q86Z20	S100	SNYRRQSSTVDSNSE	85 / 7 AA	59
Phosphosite 16:	CCDC125	Q86Z20	T101	NYRRQSSTVDSNSEL	85 / 7 AA	59
Phosphosite 17:	LRRC31	Q6UY01	T20	ETKPQTSTVNKFLRG	71 / 7 AA	61
Phosphosite 18:	C6orf152	Q86VQ0	S32	SDFETPQSSGRSSLV	100 / 6 AA	81
Phosphosite 19:	C6orf152	Q86VQ0	T29	SYLSDFETPQSSGRS	100 / 6 AA	81
Phosphosite 20:	LRRC31	Q6UY01	T18	EGETKPQTSTVNKFL	71 / 7 AA	61