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:	S509
P-Site Sequence:	PVECDFTSPGDEGPP
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	S509	PVECDFTSPGDEGPP	100 / 9 AA	59
Phosphosite 1:	IL-21R	Q9HBE5	T508	SPVECDFTSPGDEGP	100 / 8 AA	59
Phosphosite 2:	ACSL6	Q9UKU0	T471	TAGCTFTTPGDWTSG	75 / 8 AA	78
Phosphosite 3:	VAV2	P52735	S576	IPPCKFTSPADLDAS	75 / 8 AA	101
Phosphosite 4:	VAV2	P52735	T575	VIPPCKFTSPADLDA	75 / 8 AA	101
Phosphosite 5:	NOC2L	Q9Y3T9	T347	YVRNCKFTSPGALPF	85 / 7 AA	85
Phosphosite 6:	TTF2	Q9UNY4	T640	KDDSCDFTSHGTLII	85 / 7 AA	130
Phosphosite 7:	DOCK11	Q5JSL3	S1208	EFPCGFTSPANRGSL	62 / 8 AA	238
Phosphosite 8:	TAF2	Q6P1X5	S554	EIKQDYTSPGTQKYV	62 / 8 AA	137
Phosphosite 9:	ECM1	Q16610	S490	PALCCYLSPGDEQVN	66 / 9 AA	61
Phosphosite 10:	RYR1	P21817	S1501	VWGGDFVSPGQQGRI	62 / 8 AA	565
Phosphosite 11:	PKD1L2	Q7Z442	S314	NVTHQFTSPGEFTVF	62 / 8 AA	273
Phosphosite 12:	TAS1R1	Q7RTX1	T33	TESSPDFTLPGDYLL	85 / 7 AA	93
Phosphosite 13:	MIPEP	Q99797	T243	EHIRRNFTSAGDHII	62 / 8 AA	81
Phosphosite 14:	TAF2	Q6P1X5	Y552	ELEIKQDYTSPGTQK	83 / 6 AA	137
Phosphosite 15:	PCNX	Q96RV3	S501	PHANEFTSQGDRPPG	71 / 7 AA	259
Phosphosite 16:	TAF2	Q6P1X5	T553	LEIKQDYTSPGTQKY	83 / 6 AA	137
Phosphosite 17:	CUBN	O60494	T2583	NTPEGNFTSPGYDGV	83 / 6 AA	399
Phosphosite 18:	ARMC9	Q7Z3E5	T289	LAHSVDFTRPGTAST	71 / 7 AA	92
Phosphosite 19:	GPR177	Q5T9L3	T163	VPRKLKCTFTSPKTP	83 / 6 AA	62
Phosphosite 20:	CUBN	O60494	S2584	TPEGNFTSPGYDGVR	83 / 6 AA	399