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:	S493
P-Site Sequence:	QIESSNNSRISDDIT
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	S493	QIESSNNSRISDDIT	100 / 9 AA	119
Phosphosite 1:	C4orf21	Q86YA3	S496	SSNNSRISDDITDMI	100 / 6 AA	119
Phosphosite 2:	CHMP7	Q8WUX9	S417	SVPNPRISDAELEAE	83 / 6 AA	51
Phosphosite 3:	ACIN1	Q9UKV3	S895	VDLHADDSRISEDET	50 / 8 AA	152
Phosphosite 4:	ZNF639	Q9UID6	S25	YSDSSGISRIADGFN	66 / 9 AA	56
Phosphosite 5:	TARBP1	Q13395	S1442	IPWNSRVSDLDLELL	83 / 6 AA	182
Phosphosite 6:	TCOF1	Q13428	S1047	ASSSKESSRISDGKK	66 / 9 AA	152
Phosphosite 7:	KIAA2022	Q5QGS0	S771	IPGTSNSSRLSEFHE	55 / 9 AA	168
Phosphosite 8:	NLRC3	Q7RTR2	S61	LGPCSNDSRIQRHRK	71 / 7 AA	115
Phosphosite 9:	FMR1	Q06787	S343	NSLPSNNSRVGPNAP	62 / 8 AA	71
Phosphosite 10:	DNAH14	Q0VDD8	S1528	DIDLRLKSRISDLSN	83 / 6 AA	400
Phosphosite 11:	THRAP3	Q9Y2W1	S167	SRSSSNHSRVESSKR	71 / 7 AA	109
Phosphosite 12:	DNAH14	Q0VDD8	S1531	LRLKSRISDLSNVFK	83 / 6 AA	400
Phosphosite 13:	POM121L2	Q96KW2	S488	EIGSSSYSRISVTAA	75 / 8 AA	103
Phosphosite 14:	EYS	Q5T1H1	S2436	FLAYSRISDISFHYE	83 / 6 AA	351
Phosphosite 15:	GFRA1	P56159	S126	SPYEPVNSRLSDIFR	83 / 6 AA	51
Phosphosite 16:	SPIN1	Q9Y657	S124	RVATSRISDAHLADT	83 / 6 AA	30
Phosphosite 17:	POM121L2	Q96KW2	Y487	SEIGSSSYSRISVTA	75 / 8 AA	103
Phosphosite 18:	NRG2	O14511	S54	SRSSSNNSSISRPAA	87 / 8 AA	92
Phosphosite 19:	DDX58	O95786	S468	RKVESRISDKFKYII	83 / 6 AA	107
Phosphosite 20:	RAD9B	Q6WBX8	S22	GKAVQALSRISDEFW	100 / 5 AA	48