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:	T978
P-Site Sequence:	YENFMTETPELPSTC
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	T978	YENFMTETPELPSTC	100 / 9 AA	119
Phosphosite 1:	C4orf21	Q86YA3	T976	TEYENFMTETPELPS	100 / 7 AA	119
Phosphosite 2:	ABCB8	Q9NUT2	S191	VGSFMTESQNLSTHL	55 / 9 AA
Phosphosite 3:	TMEM135	Q86UB9	T450	DPRYTTVTPELPTEF	66 / 9 AA	52
Phosphosite 4:	FN1	P02751	T619	VEVFITETPSQPNSH	66 / 9 AA	263
Phosphosite 5:	ALMS1	Q8TCU4	T1088	PADQMTDTPAVPSTF	62 / 8 AA	461
Phosphosite 6:	HEATR6	Q6AI08	T450	WSAFIPDTPELGSPQ	62 / 8 AA	129
Phosphosite 7:	CABIN1	Q9Y6J0	T882	AEEGMSETPMLPSSL	75 / 8 AA	246
Phosphosite 8:	PALB2	Q86YC2	T841	HSVEQTETAELPASD	75 / 8 AA	131
Phosphosite 9:	DDHD1	Q8NEL9	T608	KASSMTQTPALKFKV	71 / 7 AA	100
Phosphosite 10:	FRMPD4	Q14CM0	S919	NSSEMTESSELATAQ	62 / 8 AA	144
Phosphosite 11:	CXXC6	Q8NFU7	T392	HGEALGETPDLPEIP	62 / 8 AA	235
Phosphosite 12:	ANAPC1	Q9H1A4	T1808	GRREMSETSELWQIK	71 / 7 AA	217
Phosphosite 13:	CXorf19	B1AK76	T66	RQVFITETPRCGKKP	83 / 6 AA	14
Phosphosite 14:	CXorf19	B1AK76	T64	KLRQVFITETPRCGK	83 / 6 AA	14
Phosphosite 15:	FN1	P02751	T617	GPVEVFITETPSQPN	83 / 6 AA	263
Phosphosite 16:	HERV-K_10p14 provirus Rec protein	P61578	T70	CLENTKMTQTPESML	83 / 6 AA	12
Phosphosite 17:	HERV-K_10p14 provirus Rec protein	P61578	T72	ENTKMTQTPESMLLA	83 / 6 AA	12
Phosphosite 18:	ODAM	A1E959	T263	SAVDQTITPELPEEK	75 / 8 AA	31
Phosphosite 19:	NEB	P20929	T119	PYASTTDTPELRRIK	71 / 7 AA	773
Phosphosite 20:	Cip1 (p21)	P38936	T57	NFDFVTETPLEGDFA	83 / 6 AA	18