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:	IL-21R
Human P-Site:	S272
P-Site Sequence:	KKIWAVPSPERFFMP
UniProt:	Q9HBE5
Intern. Prot. ID:	IPI00034249

Protein Phosphosite Match	Human Protein Short Name	Human UniProt. ID	Phosphosite Number	Sequence	% Identity / # AA	Target Size kDa
Phosphosite 0:	IL-21R	Q9HBE5	S272	KKIWAVPSPERFFMP	100 / 9 AA	59
Phosphosite 1:	TRIM7	Q9C029	T446	GGQYWAVTSPERSPL	87 / 8 AA	57
Phosphosite 2:	TRIM7	Q9C029	S447	GQYWAVTSPERSPLS	87 / 8 AA	57
Phosphosite 3:	MAGIX	Q9H6Y5	S307	PGPWLVPSEERLSRA	66 / 9 AA	35
Phosphosite 4:	BTN2A1	Q7KYR7	S436	GQYRAVSSPDRILPL	55 / 9 AA	60
Phosphosite 5:	MYO18B	Q8IUG5	S62	RKQLAVASPEREIPE	75 / 8 AA	285
Phosphosite 6:	MRPL47	Q9HD33	S128	RQRLPMPSPERLDKV	55 / 9 AA	30
Phosphosite 7:	MLL3	Q8NEZ4	S2494	GSHGTMPSQERFLVP	62 / 8 AA	541
Phosphosite 8:	BTN2A1	Q7KYR7	S435	KGQYRAVSSPDRILP	62 / 8 AA	60
Phosphosite 9:	ATXN7L1	Q9ULK2	S10	TLDRKVPSPEAFLGK	66 / 9 AA	89
Phosphosite 10:	ZC3HC1	Q86WB0	S163	CFWPDSPSPDRFGML	83 / 6 AA	55
Phosphosite 11:	SIPA1L3	O60292	S1175	TYVRYKPSPERYTAA	83 / 6 AA	195
Phosphosite 12:	THAP7	Q9BT49	S196	AGCSAQPSPERQPSP	75 / 8 AA	34
Phosphosite 13:	PCDH11Y	Q9BZA8	T888	MQNSEWATPNPENRQ	71 / 7 AA	147
Phosphosite 14:	PCDH11X	Q9BZA7	T856	KQNSEWATPNPENRQ	71 / 7 AA	148
Phosphosite 15:	LARP5	Q92615	S424	HLRHAIPSAERGPGL	62 / 8 AA	81
Phosphosite 16:	C22orf34	Q6ZV56	S132	TRSITVPSPQRSAPR	71 / 7 AA	16
Phosphosite 17:	FAM122B	Q7Z309	S141	LPPSPVPSPRRFSRR	66 / 9 AA	27
Phosphosite 18:	TCF20	Q9UGU0	S249	SSSSSFPSPQRFSQS	83 / 6 AA	212
Phosphosite 19:	TNRC6A	Q8NDV7	S991	PTGWEEPSPESIRRK	55 / 9 AA	210
Phosphosite 20:	FOXI1	Q12951	S43	FHPQGVPSPQRPSFE	71 / 7 AA	41