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:	S338
P-Site Sequence:	NSSRLWNSQAQIDQK
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	S338	NSSRLWNSQAQIDQK	100 / 9 AA	55
Phosphosite 1:	HERV-K_1q22 provirus ancestral Pol protein	P63135	S1274	NSTRLWNSQSSIDQK	77 / 9 AA	165
Phosphosite 2:	HERV-K_11q22.1 provirus ancestral Env polyprotein	P61570	S514	NSTRLWNSQSSIDQK	77 / 9 AA	75
Phosphosite 3:	HERV-K_1q22 provirus ancestral Env polyprotein	P61567	S403	NSTRLWNSQSSIDQK	77 / 9 AA	67
Phosphosite 4:	HERV-K_22q11.21 provirus ancestral Env polyprotein	P61566	S403	NSTRLWNSQSSIDQK	77 / 9 AA	67
Phosphosite 5:	HERV-K_1q23.3 provirus ancestral Env polyprotein	O42043	S403	NSTRLWNSQSSIDQK	77 / 9 AA	64
Phosphosite 6:	TBC1D26	Q86UD7	S224	ERHSLWYSTAQILPG	66 / 9 AA	29
Phosphosite 7:	KIAA1257	Q9ULG3	T194	ITLRLWNTKDKMSRK	44 / 9 AA	47
Phosphosite 8:	CROCC	Q5TZA2	S1963	QEVERLRSAQAQTER	62 / 8 AA	229
Phosphosite 9:	RFTN2	Q52LD8	S405	QRPVMWNSAAQTPDK	62 / 8 AA	56
Phosphosite 10:	ARFGEF2	Q9Y6D5	S236	KFVRLKHSQAQSKPT	75 / 8 AA	202
Phosphosite 11:	GPR158	Q5T848	S1076	AEVCLWESQGQSILE	71 / 7 AA	135
Phosphosite 12:	MAPKBP1	O60336	T428	NTIRLWNTESSGVHG	57 / 7 AA	164
Phosphosite 13:	LRRC66	Q68CR7	S616	TEQSLWDSQMEFSKE	50 / 8 AA	98
Phosphosite 14:	SLC29A3	Q9BZD2	S198	GSFPMRNSQALISGG	62 / 8 AA	52
Phosphosite 15:	CNTN5	O94779	S350	SKARLRKSQAVLEIP	71 / 7 AA	121
Phosphosite 16:	FRS3	O43559	S334	PLPPVWESQAQQLGG	62 / 8 AA	54
Phosphosite 17:	CCDC48	Q9HA90	S227	LQVGLWKSQASTHEM	83 / 6 AA	18
Phosphosite 18:	HERC2	O95714	S319	LLLQLWDSGAQETDN	62 / 8 AA	527
Phosphosite 19:	UNC13C	Q8NB66	S537	DATPLWHSQSDFFTA	44 / 9 AA	251
Phosphosite 20:	GORASP1	Q9BQQ3	S432	TEAEGLDSQAQISTT	71 / 7 AA	46