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:	S518
P-Site Sequence:	GDEGPPRSYLRQWVV
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	S518	GDEGPPRSYLRQWVV	100 / 9 AA	59
Phosphosite 1:	IL-21R	Q9HBE5	Y519	DEGPPRSYLRQWVVI	100 / 8 AA	59
Phosphosite 2:	ZNF26	P17031	S144	QNSAPSRSYLRKNPD	66 / 9 AA	61
Phosphosite 3:	PMS2L1	A4D2B8	S40	VGGGAPRSYLQVASA	75 / 8 AA	48
Phosphosite 4:	ZNF26	P17031	Y145	NSAPSRSYLRKNPDK	75 / 8 AA	61
Phosphosite 5:	ARHGEF10	O15013	S297	CKNGIPRSFLRSNHK	75 / 8 AA	152
Phosphosite 6:	GABRA4	P48169	S427	SSKGTPRSYLASSPN	85 / 7 AA	62
Phosphosite 7:	PAK4	O96013	S319	VDPGDPRSYLDNFIK	85 / 7 AA	64
Phosphosite 8:	TBC1D19	Q8N5T2	S343	NSASPPKSYIRGKLG	62 / 8 AA	60
Phosphosite 9:	TBC1D19	Q8N5T2	Y344	SASPPKSYIRGKLGL	71 / 7 AA	60
Phosphosite 10:	C6orf227	Q6ZUF6	T72	GPRPPRSTLRMMETK	75 / 8 AA	21
Phosphosite 11:	LRTOMT	Q8WZ04	Y221	LAHRPRCYLRDLQLL	71 / 7 AA	32
Phosphosite 12:	TIMELESS	Q9UNS1	S497	DERCQPRSFLRDLVE	71 / 7 AA	139
Phosphosite 13:	PNMT	P11086	Y35	QRFEPRAYLRNNYAP	83 / 6 AA	31
Phosphosite 14:	KMO	O15229	S449	IHYMSPRSFLRLRRP	71 / 7 AA	56
Phosphosite 15:	PKN3	Q6P5Z2	Y517	PPKPPRLYLPQEPTS	75 / 8 AA	99
Phosphosite 16:	TCEAL1	Q15170	S36	PKSSPPRSSLRRSSP	66 / 9 AA	18
Phosphosite 17:	C6orf227	Q6ZUF6	S71	PGPRPPRSTLRMMET	75 / 8 AA	21
Phosphosite 18:	DFFB	O76075	Y167	CESRIRSYLREVSSY	83 / 6 AA	39
Phosphosite 19:	DFFB	O76075	S166	SCESRIRSYLREVSS	83 / 6 AA	39
Phosphosite 20:	FASTK	Q14296	Y532	GLPQLKSYLRQKLQA	83 / 6 AA	61