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:	S22
P-Site Sequence:	TLVHKSSSQGQDRHM
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	S22	TLVHKSSSQGQDRHM	100 / 9 AA	18
Phosphosite 1:	IL21	Q9HBE4	S21	GTLVHKSSSQGQDRH	100 / 8 AA	18
Phosphosite 2:	IL21	Q9HBE4	S20	LGTLVHKSSSQGQDR	100 / 7 AA	18
Phosphosite 3:	PNPLA3	Q9NST1	S266	QPGLKSSSEGMDPEV	75 / 8 AA	53
Phosphosite 4:	FAM169A	Q9Y6X4	S350	QDSEFSSSQGEDEKT	85 / 7 AA	75
Phosphosite 5:	CXorf48	Q8WUE5	S244	TPVHKSSSGFQDDGG	77 / 9 AA	29
Phosphosite 6:	CYP4Z2P	Q8N1L4	S241	DLVFKFSSQGQIFSK	75 / 8 AA	40
Phosphosite 7:	CYP4Z1	Q86W10	S241	DLVFKFSSQGQIFSK	75 / 8 AA	59
Phosphosite 8:	CYP4Z2P	Q8N1L4	S240	NDLVFKFSSQGQIFS	75 / 8 AA	40
Phosphosite 9:	CYP4Z1	Q86W10	S240	NDLVFKFSSQGQIFS	75 / 8 AA	59
Phosphosite 10:	PTGER4	P35408	S443	ISETSDSSQGQDSES	100 / 6 AA	53
Phosphosite 11:	DNAH3	Q8TD57	S52	SIHHMSHSQGQPELP	75 / 8 AA	471
Phosphosite 12:	IGFBP7	Q16270	S253	YECHASNSQGQASAS	75 / 8 AA	29
Phosphosite 13:	MIXL1	Q9H2W2	S199	GGISDSSSQGQNFET	85 / 7 AA	25
Phosphosite 14:	UCHL3	P15374	S75	EEEEKIKSQGQDVTS	75 / 8 AA	26
Phosphosite 15:	ZIC1	Q15915	S387	HMKVHESSSQGSQPS	85 / 7 AA	48
Phosphosite 16:	PCDH11Y	Q9BZA8	S1157	SLDHSSSSQAQASAL	75 / 8 AA	147
Phosphosite 17:	PCDH11X	Q9BZA7	S1164	SLDHSSSSQAQASAL	75 / 8 AA	148
Phosphosite 18:	ZIC1	Q15915	S386	KHMKVHESSSQGSQP	85 / 7 AA	48
Phosphosite 19:	PCDH11Y	Q9BZA8	S1156	ASLDHSSSSQAQASA	75 / 8 AA	147
Phosphosite 20:	PCDH11X	Q9BZA7	S1163	ASLDHSSSSQAQASA	75 / 8 AA	148