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:	S140
P-Site Sequence:	ESGESAASHEAKKTG
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	S140	ESGESAASHEAKKTG	100 / 9 AA	119
Phosphosite 1:	MFSD6L	Q8IWD5	S139	SAQESASSHPAKRTA	77 / 9 AA	64
Phosphosite 2:	ATF7IP	Q6VMQ6	S979	DDEESGASQDPKKLN	55 / 9 AA	136
Phosphosite 3:	SPTA1	P02549	S844	VILENIASHEPRIQE	55 / 9 AA	280
Phosphosite 4:	POLH	Q9Y253	S678	PQVVSAVSHQGKRNP	62 / 8 AA	78
Phosphosite 5:	CCDC88C	Q9P219	S1034	PAGKTAASHQGKEAW	62 / 8 AA	228
Phosphosite 6:	SGK223	Q86YV5	S1110	FVRDSAASHQTEPEA	62 / 8 AA	150
Phosphosite 7:	CCDC120	Q96HB5	S224	SLSESGASHDNEEPH	71 / 7 AA	68
Phosphosite 8:	C4orf21	Q86YA3	S137	VIMESGESAASHEAK	100 / 6 AA	119
Phosphosite 9:	ATR	Q13535	S89	MFVNVSGSHEAKGSC	71 / 7 AA	301
Phosphosite 10:	SCAND3	Q6R2W3	S524	TPCESAFSSEAKLGL	77 / 9 AA	152
Phosphosite 11:	UBAP2	Q5T6F2	S733	HASVESASSHQSSAT	62 / 8 AA	117
Phosphosite 12:	UBAP2	Q5T6F2	S734	ASVESASSHQSSATF	62 / 8 AA	117
Phosphosite 13:	NFAT2	O95644	S506	GKTVSTTSHEAILSN	71 / 7 AA	101
Phosphosite 14:	AIM1	Q9Y4K1	S75	GGVASAASPESKPSP	75 / 8 AA	189
Phosphosite 15:	KIAA1107	Q9UPP5	S840	ETSESPESHETPETP	62 / 8 AA	156
Phosphosite 16:	NFKBIL1	Q9UBC1	S189	GRFEGDASHETQEPE	55 / 9 AA	43
Phosphosite 17:	HMGN1	P05114	S89	KTEESPASDEAGEKE	75 / 8 AA	11
Phosphosite 18:	SLC12A6	Q9UHW9	S1098	NEVIVNKSHEAKLVL	100 / 5 AA	128
Phosphosite 19:	SGK223	Q86YV5	S1107	ASDFVRDSAASHQTE	83 / 6 AA	150