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_1q23.3 provirus ancestral Env polyprotein
Human P-Site:	S337
P-Site Sequence:	RPWEASPSIHILTEI
UniProt:	O42043
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_1q23.3 provirus ancestral Env polyprotein	O42043	S337	RPWEASPSIHILTEI	100 / 9 AA	64
Phosphosite 1:	HERV-K_11q22.1 provirus ancestral Env polyprotein	P61570	S448	RPWEASPSIHILTEV	100 / 9 AA	75
Phosphosite 2:	HERV-K_1q22 provirus ancestral Pol protein	P63135	S1208	RPWEASPSVHILTEV	88 / 9 AA	165
Phosphosite 3:	HERV-K_1q22 provirus ancestral Env polyprotein	P61567	S337	RPWEASPSVHILTEV	88 / 9 AA	67
Phosphosite 4:	HERV-K_22q11.21 provirus ancestral Env polyprotein	P61566	S337	RPWEASPSVHILTEV	88 / 9 AA	67
Phosphosite 5:	HERV-K_16p3.3 provirus ancestral Env polyprotein	Q9NX77	S272	RPWESSPSIHIVNEV	77 / 9 AA	55
Phosphosite 6:	HERV-K_11q22.1 provirus ancestral Env polyprotein	P61570	S446	MDRPWEASPSIHILT	100 / 7 AA	75
Phosphosite 7:	HERV-K_1q23.3 provirus ancestral Env polyprotein	O42043	S335	TDRPWEASPSIHILT	100 / 7 AA	64
Phosphosite 8:	HERV-K_1q22 provirus ancestral Pol protein	P63135	S1206	MDRPWEASPSVHILT	85 / 7 AA	165
Phosphosite 9:	HERV-K_1q22 provirus ancestral Env polyprotein	P61567	S335	MDRPWEASPSVHILT	85 / 7 AA	67
Phosphosite 10:	HERV-K_22q11.21 provirus ancestral Env polyprotein	P61566	S335	MDRPWEASPSVHILT	85 / 7 AA	67
Phosphosite 11:	REXO1	Q8N1G1	S721	RLAEKSPSVHISAPG	75 / 8 AA	132
Phosphosite 12:	HERV-K_16p3.3 provirus ancestral Env polyprotein	Q9NX77	S270	LHRPWESSPSIHIVN	85 / 7 AA	55
Phosphosite 13:	OSBPL6	Q9BZF3	S35	SQRDSRQSIHILERT	55 / 9 AA	106
Phosphosite 14:	HDAC4	P56524	S452	GADRVSPSIHKLRQH	75 / 8 AA	119
Phosphosite 15:	hCG1794298	A8MTZ7	S50	DAPSKGPSIHFLPPV	71 / 7 AA	34
Phosphosite 16:	C14orf143	Q9BUY7	S18	RTWEASPSEHRKWVE	75 / 8 AA	19
Phosphosite 17:	EML5	Q05BV3	S752	GQVGRDPSIHIWDTE	83 / 6 AA	219
Phosphosite 18:	DOK3	Q7L591	S407	NLCVLEASPTLHGGE	71 / 7 AA	53
Phosphosite 19:	C1orf9	Q9UBS9	S591	EEEEASPSTVTLLGS	66 / 9 AA	139
Phosphosite 20:	MDGA2	Q7Z553	S243	SNKTASPSIKLLVDD	75 / 8 AA	107