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_19p13.11 provirus ancestral Pol protein
Human P-Site:	S878
P-Site Sequence:	ETETPQSSTVDSQDE
UniProt:	P63132
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_19p13.11 provirus ancestral Pol protein	P63132	S878	ETETPQSSTVDSQDE	100 / 9 AA	108
Phosphosite 1:	ERVK6	Q9WJR5	S881	ETETPQSSTVDSQDE	100 / 9 AA	108
Phosphosite 2:	HERV-K_11q22.1 provirus ancestral Pol protein	P63136	S876	ETETPQSSTVDSQDE	100 / 9 AA	107
Phosphosite 3:	HERV-K_8p23.1 provirus ancestral Pol protein	P63133	S878	ETETPQSSTVDSQDE	100 / 9 AA	108
Phosphosite 4:	ERVK6	Q9WJR5	S880	AETETPQSSTVDSQD	100 / 8 AA	108
Phosphosite 5:	HERV-K_11q22.1 provirus ancestral Pol protein	P63136	S875	AETETPQSSTVDSQD	100 / 8 AA	107
Phosphosite 6:	HERV-K_8p23.1 provirus ancestral Pol protein	P63133	S877	AETETPQSSTVDSQD	100 / 8 AA	108
Phosphosite 7:	HERV-K_19p13.11 provirus ancestral Pol protein	P63132	S877	AETETPQSSTVDSQD	100 / 8 AA	108
Phosphosite 8:	ERVK6	Q9BXR3	S878	ETETSQSSTVDSQDE	88 / 9 AA	108
Phosphosite 9:	DBNDD2	Q9BQY9	S192	PPPTPQSSGVDNHLE	77 / 9 AA	28
Phosphosite 10:	CCDC125	Q86Z20	S100	SNYRRQSSTVDSNSE	87 / 8 AA	59
Phosphosite 11:	ERVK6	Q9BXR3	S877	AETETSQSSTVDSQD	87 / 8 AA	108
Phosphosite 12:	DBNDD2	Q9BQY9	S191	DPPPTPQSSGVDNHL	87 / 8 AA	28
Phosphosite 13:	CCDC125	Q86Z20	T101	NYRRQSSTVDSNSEL	87 / 8 AA	59
Phosphosite 14:	SLC9A3	P48764	S577	VDFTPRSSTVEASVS	66 / 9 AA	93
Phosphosite 15:	SLC9A3	P48764	S576	NVDFTPRSSTVEASV	75 / 8 AA	93
Phosphosite 16:	ERVK6	Q9BXR3	T879	TETSQSSTVDSQDEQ	87 / 8 AA	108
Phosphosite 17:	PLEKHA5	Q9HAU0	S861	KSPTPESSTIASYVT	66 / 9 AA	127
Phosphosite 18:	CCDC125	Q86Z20	S99	ISNYRRQSSTVDSNS	85 / 7 AA	59
Phosphosite 19:	SELPLG	Q14242	T81	GPGTPESTTVEPAAR	55 / 9 AA	43
Phosphosite 20:	MUC5AC	P98088	S3230	TTSTPQTSTISSPTT	66 / 9 AA	527