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:	S478
P-Site Sequence:	EYEQSESSLPELKHL
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	S478	EYEQSESSLPELKHL	100 / 9 AA	119
Phosphosite 1:	C4orf21	Q86YA3	S477	KEYEQSESSLPELKH	100 / 8 AA	119
Phosphosite 2:	DUSP13	Q6B8I1	S5	___MAETSLPELGGE	66 / 9 AA	21
Phosphosite 3:	SLC7A3	Q8WY07	S319	YYQLQPESPLPEAFL	75 / 8 AA	67
Phosphosite 4:	MAPK8IP3	Q9UPT6	S195	GGNSQTESSLPGRRK	85 / 7 AA	147
Phosphosite 5:	SRPK1	Q96SB4	S39	GSAPHSESDLPEQEE	75 / 8 AA	74
Phosphosite 6:	FNDC3A	Q9Y2H6	S301	NGETDESSVPELYGY	85 / 7 AA	132
Phosphosite 7:	CdGAP	Q2M1Z3	S272	RKERRENSLPEIVPP	55 / 9 AA	157
Phosphosite 8:	PHF20L1	A8MW92	S458	SQNQQESSVPEVPDV	66 / 9 AA	62
Phosphosite 9:	INADL	Q8NI35	T654	DEPRRTETSLPETEV	62 / 8 AA	196
Phosphosite 10:	INADL	Q8NI35	S655	EPRRTETSLPETEVD	62 / 8 AA	196
Phosphosite 11:	NIPBL	Q6KC79	S618	SEMKQSESRLAESKP	75 / 8 AA	316
Phosphosite 12:	PRDM7	Q9NQW5	S129	ASFNNESSLRELSGT	75 / 8 AA	56
Phosphosite 13:	SPHK1IP	Q2M3C7	S412	IRLSQSQSTLPQESA	62 / 8 AA	186
Phosphosite 14:	SCFD1	Q8WVM8	S388	KLTSAVSSLPELLEK	100 / 6 AA	72
Phosphosite 15:	LMTK2	Q8IWU2	S917	SRVSVGSSLPELGQE	100 / 6 AA	165
Phosphosite 16:	PLEKHG3	A1L390	S503	MSFESISSLPEVEPD	66 / 9 AA	134
Phosphosite 17:	CEP350	Q5VT06	S1943	SHLNSESSIPEELGS	85 / 7 AA	351
Phosphosite 18:	LENG1	Q96BZ8	S59	KKARHQNSLPELEAA	71 / 7 AA	31
Phosphosite 19:	CEP350	Q5VT06	S1942	YSHLNSESSIPEELG	85 / 7 AA	351
Phosphosite 20:	MAP1A	P78559	S2229	KAPSLDSSLPQLPSP	71 / 7 AA	306