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:	IL21
Human P-Site:	S21
P-Site Sequence:	GTLVHKSSSQGQDRH
UniProt:	Q9HBE4
Intern. Prot. ID:

Protein Phosphosite Match	Human Protein Short Name	Human UniProt. ID	Phosphosite Number	Sequence	% Identity / # AA	Target Size kDa
Phosphosite 0:	IL21	Q9HBE4	S21	GTLVHKSSSQGQDRH	100 / 9 AA	18
Phosphosite 1:	IL21	Q9HBE4	S20	LGTLVHKSSSQGQDR	100 / 8 AA	18
Phosphosite 2:	IL21	Q9HBE4	S22	TLVHKSSSQGQDRHM	100 / 8 AA	18
Phosphosite 3:	CYP4Z2P	Q8N1L4	S240	NDLVFKFSSQGQIFS	77 / 9 AA	40
Phosphosite 4:	CYP4Z1	Q86W10	S240	NDLVFKFSSQGQIFS	77 / 9 AA	59
Phosphosite 5:	ZIC1	Q15915	S387	HMKVHESSSQGSQPS	87 / 8 AA	48
Phosphosite 6:	ZIC1	Q15915	S386	KHMKVHESSSQGSQP	87 / 8 AA	48
Phosphosite 7:	Septin-11	Q9NVA2	S35	PDQLVNKSTSQGFCF	75 / 8 AA	49
Phosphosite 8:	MAGI1	Q96QZ7	S1283	PPDLHKSSPHGEKRA	55 / 9 AA	165
Phosphosite 9:	Zic2	O95409	S418	HMKVHESSPQGSESS	75 / 8 AA	55
Phosphosite 10:	Zic2	O95409	S417	KHMKVHESSPQGSES	75 / 8 AA	55
Phosphosite 11:	CYP4Z2P	Q8N1L4	S241	DLVFKFSSQGQIFSK	75 / 8 AA	40
Phosphosite 12:	CYP4Z1	Q86W10	S241	DLVFKFSSQGQIFSK	75 / 8 AA	59
Phosphosite 13:	GATAD2A	Q86YP4	S606	PSLAVHKSSSAVDRQ	100 / 6 AA	68
Phosphosite 14:	CXorf48	Q8WUE5	S242	SITPVHKSSSGFQDD	100 / 6 AA	29
Phosphosite 15:	DNAH3	Q8TD57	S52	SIHHMSHSQGQPELP	75 / 8 AA	471
Phosphosite 16:	GPR87	Q9BY21	S237	SRYIHKSSRQFISQS	71 / 7 AA	41
Phosphosite 17:	IGFBP7	Q16270	S253	YECHASNSQGQASAS	75 / 8 AA	29
Phosphosite 18:	GPR87	Q9BY21	S236	ISRYIHKSSRQFISQ	71 / 7 AA	41
Phosphosite 19:	KATNA1	O75449	S140	TVRVHRSSAQNVHND	71 / 7 AA	56
Phosphosite 20:	CATSPER4	Q7RTX7	S459	SMEKVHDSSSQILLK	85 / 7 AA	54