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:	S489
P-Site Sequence:	LKHLQIESSNNSRIS
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	S489	LKHLQIESSNNSRIS	100 / 9 AA	119
Phosphosite 1:	C4orf21	Q86YA3	S490	KHLQIESSNNSRISD	100 / 8 AA	119
Phosphosite 2:	KCNU1	A8MYU2	S831	IGSLQIDSSSDPSPS	55 / 9 AA	130
Phosphosite 3:	HIVEP1	P15822	T1495	VKDLQAETSNSSSTN	66 / 9 AA	297
Phosphosite 4:	USP28	Q96RU2	S708	CKIPQMESSTNSSSQ	75 / 8 AA	122
Phosphosite 5:	MLL	Q03164	S2552	ASPLQIESTSPTEPI	71 / 7 AA	432
Phosphosite 6:	USP28	Q96RU2	S709	KIPQMESSTNSSSQD	75 / 8 AA	122
Phosphosite 7:	CSMD2	Q7Z408	S1526	QLPGRIESSSNSLFL	75 / 8 AA	380
Phosphosite 8:	GLYAT	Q6IB77	S106	KQHLQIQSSQPSLNE	66 / 9 AA	34
Phosphosite 9:	SKIV2L2	P42285	S56	DGKLQSESTNNGKNK	66 / 9 AA	118
Phosphosite 10:	PRKDC	P78527	S1657	AKILQIDSSVSFNTS	83 / 6 AA	469
Phosphosite 11:	ERC2	O15083	S576	VKSLQTDSSNTDTAL	71 / 7 AA	111
Phosphosite 12:	TRIML1	Q8N9V2	S234	KMIAQIESSSQSSAF	75 / 8 AA	53
Phosphosite 13:	ING4	Q9UNL4	S118	LKEKQIESSDYDSSS	83 / 6 AA	29
Phosphosite 14:	ING4	Q9UNL4	S119	KEKQIESSDYDSSSS	71 / 7 AA	29
Phosphosite 15:	KIAA0319	Q5VV43	S260	ASQLQEQSSNSSGKE	66 / 9 AA	118
Phosphosite 16:	CSMD2	Q7Z408	S1528	PGRIESSSNSLFLAF	85 / 7 AA	380
Phosphosite 17:	TRIML1	Q8N9V2	S235	MIAQIESSSQSSAFE	75 / 8 AA	53
Phosphosite 18:	DSPP	Q9NZW4	S189	DGPQVAGSNNSTDNE	62 / 8 AA	126
Phosphosite 19:	HMG20A	Q9NP66	S65	GQLLQSESSNAAEGN	85 / 7 AA	40
Phosphosite 20:	HIP1R	O75146	S358	DRDLQIESLKREVEM	100 / 5 AA	119