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:	S318
P-Site Sequence:	PSTLEVYSCHPPRSP
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	S318	PSTLEVYSCHPPRSP	100 / 9 AA	59
Phosphosite 1:	IL-21R	Q9HBE5	Y317	VPSTLEVYSCHPPRS	100 / 8 AA	59
Phosphosite 2:	GALM	Q96C23	T273	GRVLEVYTTQPGVQF	62 / 8 AA	38
Phosphosite 3:	B2M	P61769	S31	TPKIQVYSRHPAENG	55 / 9 AA	14
Phosphosite 4:	GALM	Q96C23	Y272	SGRVLEVYTTQPGVQ	62 / 8 AA	38
Phosphosite 5:	B2M	P61769	Y30	RTPKIQVYSRHPAEN	62 / 8 AA	14
Phosphosite 6:	ZNF423	Q2M1K9	Y563	TQSFMEVYSCPYCTN	83 / 6 AA	145
Phosphosite 7:	MHC class II antigen DQB1	P01920	Y203	TPQRGDVYTCHVEHP	66 / 6 AA
Phosphosite 8:	MHC class II antigen DQB1	P01920	T204	PQRGDVYTCHVEHPS	66 / 6 AA
Phosphosite 9:	ZNF711	Q9Y462	Y393	DGQPLTVYPCHICTK	71 / 7 AA	87
Phosphosite 10:	PADI3	Q9ULW8	Y309	TLPPLEVYVCRVRNN	71 / 7 AA	75
Phosphosite 11:	SLIT1	O75093	Y948	HNDPLEVYRCACPSG	83 / 6 AA	168
Phosphosite 12:	SREC-II	Q96GP6	S127	PDCKELCSCHPHGQC	71 / 7 AA	92
Phosphosite 13:	FDXACB1	Q9BRP7	S238	RGFLEAPSCHPIKTI	75 / 8 AA	70
Phosphosite 14:	RCC1-like GEF	Q96I51	Y252	LTDKGEVYSCGWGAD	100 / 5 AA	50
Phosphosite 15:	PEX12	O00623	S144	LREEDEYSIHPPSSR	62 / 8 AA	41
Phosphosite 16:	ZC3H12C	Q9C0D7	S266	HGNKEVFSCRGIKLA	66 / 6 AA	99
Phosphosite 17:	GNL3	Q9BVP2	Y402	TGASLAYYCHPPTSW	71 / 7 AA	62
Phosphosite 18:	RARG2	P13631	Y124	SIQKNMVYTCHRDKN	66 / 6 AA	50
Phosphosite 19:	RAR-alpha	P10276	Y122	SIQKNMVYTCHRDKN	66 / 6 AA	51
Phosphosite 20:	CECR2	Q9BXF3	S1205	PPQGMRYSYHPPPQP	83 / 6 AA	164