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:	S521
P-Site Sequence:	NSIHESLSNVTQPFL
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	S521	NSIHESLSNVTQPFL	100 / 9 AA	119
Phosphosite 1:	C4orf21	Q86YA3	S519	SLNSIHESLSNVTQP	100 / 7 AA	119
Phosphosite 2:	LRRC8C	Q8TDW0	S69	AQNHSSLSNVSQAVA	77 / 9 AA	92
Phosphosite 3:	ASXL2	Q76L83	S1059	HQYHEGLSKATQDQI	66 / 9 AA	154
Phosphosite 4:	ZNF521	Q96K83	S60	LQVFESLSDITEHKI	55 / 9 AA	148
Phosphosite 5:	LRRC42	Q9Y546	S202	LTNEALSSVTQLHLK	75 / 8 AA	49
Phosphosite 6:	ENTHD1	Q8IYW4	S567	ARLHEDLSTVIQELN	66 / 9 AA	68
Phosphosite 7:	DGKH	Q86XP1	S197	NVCRESLSGVTSHGL	75 / 8 AA	135
Phosphosite 8:	ZC3HAV1	Q7Z2W4	S494	ALVNDSLSDVTSTTS	62 / 8 AA	101
Phosphosite 9:	DCHS2	Q6V1P9	S599	VEVSESLSPMTQMLQ	75 / 8 AA	322
Phosphosite 10:	VPS13D	Q5THJ4	S1600	LFSHSSLSNTSQKSL	66 / 9 AA	492
Phosphosite 11:	KBTBD2	Q8IY47	S226	QIRIDALSEVTQRAW	62 / 8 AA	71
Phosphosite 12:	BROMI	Q96NH3	S1006	NVKNESLSSVQQLGI	66 / 9 AA	145
Phosphosite 13:	RPRD2	Q5VT52	S1042	PSDGVSLSNLTQPSL	85 / 7 AA	156
Phosphosite 14:	DPP9	Q86TI2	S230	TFCHQGLSNVLDDPK	71 / 7 AA	98
Phosphosite 15:	LRRC8C	Q8TDW0	S67	QPAQNHSSLSNVSQA	85 / 7 AA	92
Phosphosite 16:	WDR52	Q96MT7	S456	WKLDLSFSNITQDPE	71 / 7 AA	112
Phosphosite 17:	PROCA1	Q8NCQ7	S29	RSWDESLSDVNRLPS	55 / 9 AA	41
Phosphosite 18:	ERO1L	Q96HE7	S145	GAVDESLSEETQKAV	66 / 9 AA	54
Phosphosite 19:	KIAA1377	Q9P2H0	S547	LAETSSLSNVTSNYD	100 / 6 AA	126
Phosphosite 20:	BSDC1	Q9NW68	S284	SESSESISLVTQIAN	75 / 8 AA	47