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_16p3.3 provirus ancestral Env polyprotein
Human P-Site:	S272
P-Site Sequence:	RPWESSPSIHIVNEV
UniProt:	Q9NX77
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_16p3.3 provirus ancestral Env polyprotein	Q9NX77	S272	RPWESSPSIHIVNEV	100 / 9 AA	55
Phosphosite 1:	HERV-K_11q22.1 provirus ancestral Env polyprotein	P61570	S448	RPWEASPSIHILTEV	77 / 9 AA	75
Phosphosite 2:	HERV-K_1q23.3 provirus ancestral Env polyprotein	O42043	S337	RPWEASPSIHILTEI	77 / 9 AA	64
Phosphosite 3:	HERV-K_1q22 provirus ancestral Pol protein	P63135	S1208	RPWEASPSVHILTEV	66 / 9 AA	165
Phosphosite 4:	HERV-K_1q22 provirus ancestral Env polyprotein	P61567	S337	RPWEASPSVHILTEV	66 / 9 AA	67
Phosphosite 5:	HERV-K_22q11.21 provirus ancestral Env polyprotein	P61566	S337	RPWEASPSVHILTEV	66 / 9 AA	67
Phosphosite 6:	HERV-K_16p3.3 provirus ancestral Env polyprotein	Q9NX77	S270	LHRPWESSPSIHIVN	100 / 7 AA	55
Phosphosite 7:	REXO1	Q8N1G1	S721	RLAEKSPSVHISAPG	75 / 8 AA	132
Phosphosite 8:	RGL2	O15211	S589	LDSALESSPSLHSPA	85 / 7 AA	84
Phosphosite 9:	HERV-K_11q22.1 provirus ancestral Env polyprotein	P61570	S446	MDRPWEASPSIHILT	85 / 7 AA	75
Phosphosite 10:	HERV-K_1q23.3 provirus ancestral Env polyprotein	O42043	S335	TDRPWEASPSIHILT	85 / 7 AA	64
Phosphosite 11:	CATSPERB	Q9H7T0	S729	FQHDDSPSLNIVKYI	55 / 9 AA	127
Phosphosite 12:	RGL2	O15211	S591	SALESSPSLHSPADP	85 / 7 AA	84
Phosphosite 13:	MUC4	Q99102	S106	STLFSSPSVHNVMET	75 / 8 AA	232
Phosphosite 14:	ZNF638	Q14966	S1134	LEEESTPSIQTETLV	62 / 8 AA	221
Phosphosite 15:	ZFHX4	Q86UP3	S2827	LFSLTSPSIHFNDKD	71 / 7 AA	394
Phosphosite 16:	MYPN	Q86TC9	S312	EGKELENSPDIHIVQ	71 / 7 AA	145
Phosphosite 17:	ZNF638	Q14966	T1132	NELEEESTPSIQTET	71 / 7 AA	221
Phosphosite 18:	CdGAP	Q2M1Z3	S1072	PESSKESSPSVQDST	71 / 7 AA	157
Phosphosite 19:	StARD13	Q9Y3M8	S334	GKSSGESSPSEHSSS	85 / 7 AA	125
Phosphosite 20:	CdGAP	Q2M1Z3	S1074	SSKESSPSVQDSTSP	71 / 7 AA	157