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:	C4orf21
Human P-Site:	S341
P-Site Sequence:	QSSPIHSSTVDGNDT
UniProt:	Q86YA3
Intern. Prot. ID:

Protein Phosphosite Match	Human Protein Short Name	Human UniProt. ID	Phosphosite Number	Sequence	% Identity / # AA	Target Size kDa
Phosphosite 0:	C4orf21	Q86YA3	S341	QSSPIHSSTVDGNDT	100 / 9 AA	119
Phosphosite 1:	C4orf21	Q86YA3	S340	SQSSPIHSSTVDGND	100 / 8 AA	119
Phosphosite 2:	C4orf21	Q86YA3	T342	SSPIHSSTVDGNDTE	100 / 8 AA	119
Phosphosite 3:	Tiam2	Q8IVF5	T798	LLHIYGSTVDGVPRD	75 / 8 AA	193
Phosphosite 4:	Tiam2	Q8IVF5	S797	ELLHIYGSTVDGVPR	75 / 8 AA	193
Phosphosite 5:	C2orf49	Q9BVC5	T92	NETKRSSTVDGLRKR	85 / 7 AA	26
Phosphosite 6:	C2orf49	Q9BVC5	S91	KNETKRSSTVDGLRK	85 / 7 AA	26
Phosphosite 7:	PHKA2	P46019	S975	RSVRPIHSSTSSPTI	100 / 6 AA	138
Phosphosite 8:	PHKA2	P46019	S976	SVRPIHSSTSSPTIS	100 / 6 AA	138
Phosphosite 9:	CDC42BPA	Q5VT25	S475	TVQALQYSTVDGPLT	55 / 9 AA	197
Phosphosite 10:	RABL2A	Q9UBK7	T64	TLYKHTATVDGKTIL	71 / 7 AA	26
Phosphosite 11:	RABL2B	Q9UNT1	T64	TLYKHTATVDGRTIL	71 / 7 AA	26
Phosphosite 12:	C6orf201	Q7Z4U5	S122	SAFGPIQSATVCGRQ	71 / 7 AA	23
Phosphosite 13:	HERV-K_6q14.1 provirus ancestral Gag-Pol polyprotein	P63128	S718	KGVQIHTSVVDSDYK	55 / 9 AA	124
Phosphosite 14:	CEP192	Q8TEP8	S635	QCTPIPSSTVHSSVA	66 / 9 AA	213
Phosphosite 15:	CEP192	Q8TEP8	S634	NQCTPIPSSTVHSSV	85 / 7 AA	213
Phosphosite 16:	TRIM25	Q14258	S340	LIKGIHQSTIDLKNE	71 / 7 AA	71
Phosphosite 17:	Putative UDP-GlcNAc:betaGal beta-1,3-N-acetylglucosaminyltransferase LOC402377	A8MXE2	S289	GLIPIHSSRFSGKRH	66 / 9 AA	43
Phosphosite 18:	RICS	A7KAX9	S1431	IAAIHSSSADATSSS	62 / 8 AA	231
Phosphosite 19:	SMO	Q99835	S771	QGLGPIHSRTNLMDT	83 / 6 AA	86
Phosphosite 20:	THOC2	Q8NI27	S1422	HPSPSHSSTVKDSLI	85 / 7 AA	183