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:	S469
P-Site Sequence:	GLPWGGRSPGGVSES
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	S469	GLPWGGRSPGGVSES	100 / 9 AA	59
Phosphosite 1:	FAM91A1	Q658Y4	S826	LSEWSGRSPSSLLIA	55 / 9 AA	94
Phosphosite 2:	GPR114	Q8IZF4	S205	KQPWGGWSPEGCRTE	66 / 9 AA	59
Phosphosite 3:	HABP4	Q5JVS0	S74	AGPRGGRSPAGASGH	66 / 9 AA	46
Phosphosite 4:	HECA	Q9UBI9	S264	AAAYGARSPGGSPGQ	75 / 8 AA	59
Phosphosite 5:	PACSIN3	Q9UKS6	S319	RKEKGGRSPDEVTLT	75 / 8 AA	48
Phosphosite 6:	ROBO4	Q8WZ75	S567	RSLLSWDSRSPGVPL	71 / 7 AA	107
Phosphosite 7:	EVI2B	P34910	S242	DQNWAGRSPFADGET	83 / 6 AA	49
Phosphosite 8:	KCNS1	Q96KK3	S262	AAVAAGRSPEGVRDD	75 / 8 AA	58
Phosphosite 9:	ROBO4	Q8WZ75	S569	LLSWDSRSPGVPLLP	71 / 7 AA	107
Phosphosite 10:	Tbr1	Q16650	S549	PSGWGARSPPQYCGT	83 / 6 AA	74
Phosphosite 11:	MAGI2	Q86UL8	S875	PCPENGRSPGSVSTH	85 / 7 AA	159
Phosphosite 12:	FAM91A1	Q658Y4	S823	DGVLSEWSGRSPSSL	83 / 6 AA	94
Phosphosite 13:	PRR14	Q9BWN1	S29	RALWGARSPKRPRLQ	83 / 6 AA	64
Phosphosite 14:	HNRNPA0	Q13151	S285	GSSWGGRSNSGPYRG	75 / 8 AA	31
Phosphosite 15:	FAM186B	Q8IYM0	S182	WQGWQGRSPQTSPSH	83 / 6 AA	104
Phosphosite 16:	LSR	Q86X29	S464	DEEWGGHSPRSPRGW	83 / 6 AA	71
Phosphosite 17:	MORF4L2	Q15014	S63	PGRWGGRSAENPPSG	83 / 6 AA	32
Phosphosite 18:	KIF26A	Q9ULI4	S1526	TASVTGRSPGGPVAG	100 / 6 AA	190
Phosphosite 19:	SOLO	Q8TER5	S984	GAQWGPRSPSPSLSS	71 / 7 AA	165
Phosphosite 20:	HCFC1	P51610	S1205	AREPGGRSPAFVQLA	75 / 8 AA	209