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:	S841
P-Site Sequence:	EHSTALDSLEILKKK
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	S841	EHSTALDSLEILKKK	100 / 9 AA	119
Phosphosite 1:	WHDC1L1	Q1A5X7	S144	LLTTQLDSLERLIKD	77 / 9 AA	18
Phosphosite 2:	SPTBN2	O15020	S12	LSPTDFDSLEIQGQY	75 / 8 AA	271
Phosphosite 3:	DYNC1LI1	Q9Y6G9	S161	KPWTALDSLQKWASV	66 / 9 AA	57
Phosphosite 4:	IRAK1	P51617	S683	YEDGALDSLQLLSSS	75 / 8 AA	77
Phosphosite 5:	RIF1	Q5UIP0	S143	MVSSIIDSLEILFNK	85 / 7 AA	274
Phosphosite 6:	LRRC66	Q68CR7	S752	DNVTAVDSLEENVTF	85 / 7 AA	98
Phosphosite 7:	SPTA1	P02549	S1428	DDKSSLDSLEALMKK	66 / 9 AA	280
Phosphosite 8:	HNF1A	P20823	S388	STLTALHSLEQTSPG	85 / 7 AA	67
Phosphosite 9:	KIF26B	Q2KJY2	S2070	EQVWELDSLEYLEAL	75 / 8 AA	224
Phosphosite 10:	AATK	Q6ZMQ8	S905	GTPDSLDSLDIPSSA	71 / 7 AA	145
Phosphosite 11:	C2orf54	Q08AI8	S271	LQGHRLDSLSILDRV	85 / 7 AA	50
Phosphosite 12:	IGSF1	Q8N6C5	S1151	AASNHSDSLEIWVTD	83 / 6 AA	149
Phosphosite 13:	KIAA0754	O94854	S458	RQPADLDSLEKLDPG	66 / 9 AA	135
Phosphosite 14:	COMMD3	Q9UBI1	S110	EYQNNKNSLEILLGS	83 / 6 AA	22
Phosphosite 15:	SYNE2	Q8WXH0	S1776	KALSPSDSLEIFTKL	83 / 6 AA	796
Phosphosite 16:	UTP20	O75691	S1100	RQHGILNSLEIVLKN	71 / 7 AA	318
Phosphosite 17:	C2orf54	Q08AI8	S273	GHRLDSLSILDRVNH	85 / 7 AA	50
Phosphosite 18:	DMD	P11532	S1308	EISEVLDSLENLMRH	75 / 8 AA	427
Phosphosite 19:	BAT3	P46379	S16	TAVEEPDSLEVLVKT	83 / 6 AA	119
Phosphosite 20:	ANKRD26	Q9UPS8	S1074	KTESKLNSLEIEFHH	83 / 6 AA	196