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:	S408
P-Site Sequence:	EVKLEIPSFNESSSL
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	S408	EVKLEIPSFNESSSL	100 / 9 AA	119
Phosphosite 1:	STIL	Q15468	S852	LKAVDIPSFEESNIA	66 / 9 AA	143
Phosphosite 2:	ASH1L	Q9NR48	S876	QPEIEIPSFKQGLSV	55 / 9 AA	333
Phosphosite 3:	C15orf42	Q7Z2Z1	S735	EMCLQCPSINESTDD	66 / 9 AA	211
Phosphosite 4:	JunD	P17535	S251	QTVPDVPSFGESPPL	62 / 8 AA	35
Phosphosite 5:	ATAD5	Q96QE3	S812	KAADPVPSFDESSQD	71 / 7 AA	208
Phosphosite 6:	VCAN	P13611	S845	GKDKDIPSFTEDGAD	71 / 7 AA	373
Phosphosite 7:	USP25	Q9UHP3	S1053	DCSMEIKSFHEPPKL	55 / 9 AA	126
Phosphosite 8:	NF2	P35240	S497	PLPPDIPSFNLIGDS	83 / 6 AA	70
Phosphosite 9:	WDHD1	O75717	S348	DNAVEIPSFSKGIIN	71 / 7 AA	126
Phosphosite 10:	CMYA1	Q702N8	T1685	ATRKPLETPSFKGNP	71 / 7 AA	199
Phosphosite 11:	CMYA1	Q702N8	S1687	RKPLETPSFKGNPDV	55 / 9 AA	199
Phosphosite 12:	ZNF541	Q9H0D2	S20	PSEMHLPSFSESQGL	55 / 9 AA	148
Phosphosite 13:	BTNL8	Q6UX41	Y449	PYIEYPSYNEQNGTP	71 / 7 AA	57
Phosphosite 14:	GPR125	Q8IWK6	S243	DPPLELPSFYMTPSH	71 / 7 AA	146
Phosphosite 15:	FYCO1	Q9BQS8	S1359	LTVDEIASFGEGSRE	62 / 8 AA	167
Phosphosite 16:	PLCD4	Q9BRC7	S522	YHFYEISSFSETKAK	62 / 8 AA	88
Phosphosite 17:	DNAJC14	Q6Y2X3	S35	SVDPEIPSFSGLRDS	83 / 6 AA	79
Phosphosite 18:	ATP11A	P98196	S552	FELLEILSFDSVRRR	71 / 7 AA	130
Phosphosite 19:	piccolo	Q9Y6V0	S5120	CRHDREPSFNETFRF	83 / 6 AA	567
Phosphosite 20:	ALG5	Q9Y673	Y74	LSVVVPSYNEEKRLP	66 / 6 AA	37