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:	Y281
P-Site Sequence:	ERFFMPLYKGCSGDF
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	Y281	ERFFMPLYKGCSGDF	100 / 9 AA	59
Phosphosite 1:	SLC25A27	O95847	Y290	GEGFMSLYKGFLPSW	85 / 7 AA	36
Phosphosite 2:	GPD1	P21695	Y326	FPLFMAVYKVCYEGQ	62 / 8 AA	38
Phosphosite 3:	SPATA7	Q9P0W8	Y496	TEFFMPIYKSKHSEG	71 / 7 AA	68
Phosphosite 4:	BAG2	O95816	Y139	KSHLMSLYSACSSEV	55 / 9 AA	24
Phosphosite 5:	ASB2	Q96Q27	Y162	KSRETPLYKACERKN	71 / 7 AA	65
Phosphosite 6:	BAG2	O95816	S140	SHLMSLYSACSSEVP	62 / 8 AA	24
Phosphosite 7:	GCFC	Q9Y5B6	Y753	DDVFMPLYPKNVLEN	100 / 5 AA	105
Phosphosite 8:	TUBE1	Q9UJT0	Y420	KERFMRLYKKKAHLH	83 / 6 AA	53
Phosphosite 9:	GKN2	Q86XP6	Y149	LCKHIPLYKGEVVEN	71 / 7 AA	20
Phosphosite 10:	SLC25A16	P16260	Y93	KEGFLGLYKGNGAMM	71 / 7 AA	36
Phosphosite 11:	ACTR10	Q9NZ32	Y4	____MPLYEGLGSGG	83 / 6 AA	46
Phosphosite 12:	VPRBP	Q9Y4B6	Y558	LVHPQPPYKACSYTH	62 / 8 AA	169
Phosphosite 13:	LAMA3	Q16787	Y2558	SRLSFPPYKGCIELD	71 / 7 AA	367
Phosphosite 14:	CTDP1	Q9Y5B0	Y847	MSETMPLYTLCKEDL	71 / 7 AA	104
Phosphosite 15:	DOCK11	Q5JSL3	Y552	DGRFSPLYKQDSSKL	83 / 6 AA	238
Phosphosite 16:	CTDP1	Q9Y5B0	T848	SETMPLYTLCKEDLE	71 / 7 AA	104
Phosphosite 17:	DOCK11	Q5JSL3	S549	LDLDGRFSPLYKQDS	83 / 6 AA	238
Phosphosite 18:	MTMR8	Q96EF0	Y475	PDFRNPLYKGFTMYG	100 / 5 AA	79
Phosphosite 19:	OBSCN	Q5VST9	Y2598	SLNGMPLYNDSFHEI	57 / 7 AA	868
Phosphosite 20:	GREB1L	Q9C091	Y1557	KEYEMPLYRKYWPNH	50 / 8 AA	214