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:	S307
P-Site Sequence:	SLELGPWSPEVPSTL
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	S307	SLELGPWSPEVPSTL	100 / 9 AA	59
Phosphosite 1:	LACTB	P83111	S92	EQSLAPWSPQTPAPP	66 / 9 AA	61
Phosphosite 2:	PAPPA2	Q9BXP8	S932	EPSLQAWSPEVHLYH	66 / 9 AA	199
Phosphosite 3:	ADCY8	P40145	S624	TFTEGSWSPELPFDN	75 / 8 AA	140
Phosphosite 4:	INADL	Q8NI35	S681	DGELALWSPEVKIVE	75 / 8 AA	196
Phosphosite 5:	SIPA1L1	O43166	S1078	NASKGPHSPQVPSQV	75 / 8 AA	200
Phosphosite 6:	ROBO3	Q96MS0	S1048	SGDLGPWSQYAPPEW	66 / 9 AA	148
Phosphosite 7:	APOH	P02749	S131	CTEEGKWSPELPVCA	75 / 8 AA	38
Phosphosite 8:	FAM166B	A8MTA8	S69	PPIRPPRSPEVPRES	85 / 7 AA	31
Phosphosite 9:	BHMT	Q93088	T45	YVKAGPWTPEAAVEH	62 / 8 AA	45
Phosphosite 10:	PURB	Q96QR8	S100	HYAQLGPSSPEQLAA	85 / 7 AA	33
Phosphosite 11:	RINL	Q6ZS11	S104	SWVKGPLSPEVDHPG	85 / 7 AA	50
Phosphosite 12:	ADAMTS7	Q9UKP4	S1129	EGVLGPWSPSPWPSQ	100 / 6 AA	184
Phosphosite 13:	PSRC1	Q6PGN9	S70	RLSLGPLSPEKLEEI	85 / 7 AA	39
Phosphosite 14:	PURB	Q96QR8	S101	YAQLGPSSPEQLAAG	85 / 7 AA	33
Phosphosite 15:	C16orf38	Q96A99	S259	DPRQQAWSPQVPGEI	83 / 6 AA	52
Phosphosite 16:	PNLIPRP2	P54317	S48	PVKLLPWSPEDIDTR	85 / 7 AA	52
Phosphosite 17:	ZNF397OS	Q86W11	S43	GLQENPWSQEVFRQK	71 / 7 AA	56
Phosphosite 18:	NBPF11	Q86T75	S9	VVSAGPWSSEKAEMN	83 / 6 AA	68
Phosphosite 19:	NBPF10	Q6P3W6	S9	VVSAGPWSSEKAEMN	83 / 6 AA	96
Phosphosite 20:	NBPF8	Q3BBV2	S9	VVSAGPWSSEKAEMN	83 / 6 AA	99