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:	S554
P-Site Sequence:	TQQLRRDSDIENGP_
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	S554	TQQLRRDSDIENGP_	100 / 9 AA	64
Phosphosite 1:	RP1	P56715	S1941	GFAYRKESDIENFLG	66 / 9 AA	241
Phosphosite 2:	FUT9	Q9Y231	S162	TLTYRRDSDIQVPYG	85 / 7 AA	42
Phosphosite 3:	PTPDC1	A2A3K4	S341	KELLRHDSDVSNPPN	66 / 9 AA	84
Phosphosite 4:	SPAG17	Q6Q759	S1658	GMELLRDSDIEEYLS	87 / 8 AA	252
Phosphosite 5:	LBA1	O15050	S1960	RLNVARDSDIEHTKD	85 / 7 AA	284
Phosphosite 6:	MEKK2	Q9Y2U5	S331	SRIRRRGSDIDNPTL	75 / 8 AA	70
Phosphosite 7:	NFkB-p105	P19838	S337	FVQLRRKSDLETSEP	66 / 9 AA	105
Phosphosite 8:	RGPD1	Q68DN6	S1592	KCELSKNSDIEHSSD	55 / 9 AA	197
Phosphosite 9:	ART4	Q93070	S174	IQLLRKDSIMENGTL	66 / 9 AA	36
Phosphosite 10:	FUT7	Q11130	S147	VLSYRRDSDIFVPYG	100 / 6 AA	39
Phosphosite 11:	SKAP55	Q86WV1	S172	APHLRRDSKKESCFE	66 / 9 AA	41
Phosphosite 12:	RGPD5	Q99666	S1607	KCELSKNSDIEQSSD	62 / 8 AA	199
Phosphosite 13:	RGPD4	Q7Z3J3	S1608	KCELSKNSDIEQSSD	62 / 8 AA	198
Phosphosite 14:	EnvK4 protein	Q9UKH3	S664	TQQLRRDSDHRERAM	100 / 6 AA	79
Phosphosite 15:	HERV-K_19p13.11 provirus ancestral Env polyprotein	Q902F9	S665	TQQLRRDSDHRERAM	100 / 6 AA	79
Phosphosite 16:	EnvK6	Q902F8	S665	TQQLRRDSDHRERAM	100 / 6 AA	79
Phosphosite 17:	ERVK6	Q69384	S665	TQQLRRDSDHRERAM	100 / 6 AA	79
Phosphosite 18:	HERV-K_1q22 provirus ancestral Pol protein	P63135	S1425	TQQLRRDSDHRERAM	100 / 6 AA	165
Phosphosite 19:	HERV-K_1q22 provirus ancestral Env polyprotein	P61567	S554	TQQLRRDSDHRERAM	100 / 6 AA	67
Phosphosite 20:	HERV-K_22q11.21 provirus ancestral Env polyprotein	P61566	S554	TQQLRRDSDHRERAM	100 / 6 AA	67