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:	GPR21
Human P-Site:	Y128
P-Site Sequence:	ACISIDRYIAITKPL
UniProt:	Q99679
Intern. Prot. ID:

Protein Phosphosite Match	Human Protein Short Name	Human UniProt. ID	Phosphosite Number	Sequence	% Identity / # AA	Target Size kDa
Phosphosite 0:	GPR21	Q99679	Y128	ACISIDRYIAITKPL	100 / 9 AA	40
Phosphosite 1:	TAAR6	Q96RI8	Y131	CFISIDRYIAVTDPL	88 / 9 AA	38
Phosphosite 2:	CCR9	P51686	Y145	MCISVDRYIAIAQAM	77 / 9 AA	42
Phosphosite 3:	CX3CR1	P49238	Y128	TVISIDRYLAIVLAA	77 / 9 AA	40
Phosphosite 4:	AT1 (Angiotensin II receptor)	P30556	Y127	TCLSIDRYLAIVHPM	77 / 9 AA	41
Phosphosite 5:	KOR-1	P41145	Y157	TMMSVDRYIAVCHPV	75 / 8 AA	43
Phosphosite 6:	DOR1	P41143	Y147	TMMSVDRYIAVCHPV	75 / 8 AA	40
Phosphosite 7:	OPRM1	P35372	Y168	CTMSVDRYIAVCHPV	75 / 8 AA	45
Phosphosite 8:	ADRB2	P07550	Y132	CVIAVDRYFAITSPF	66 / 9 AA	46
Phosphosite 9:	ADRB1	P08588	Y157	CVIALDRYLAITSPF	66 / 9 AA	51
Phosphosite 10:	Adrenergic receptor-alpha1B	P35368	Y144	CAISIDRYIGVRYSL	75 / 8 AA	57
Phosphosite 11:	BKR2	P30411	Y156	MLVSIDRYLALVKTM	66 / 9 AA	44
Phosphosite 12:	CCR2 (MCP1,3,4 receptor)	P41597	Y139	ILLTIDRYLAIVHAV	75 / 8 AA	42
Phosphosite 13:	CCR1	P32246	Y132	ILLTIDRYLAIVHAV	75 / 8 AA	41
Phosphosite 14:	ETB	P24530	Y200	CALSIDRYRAVASWS	66 / 9 AA	50
Phosphosite 15:	CNR1	P21554	Y215	FLTAIDRYISIHRPL	75 / 8 AA	53
Phosphosite 16:	NPSR1	Q6W5P4	Y147	VSLSIDRYHAIVYPM	87 / 8 AA	43
Phosphosite 17:	CCR5	P51681	Y127	ILLTIDRYLAVVHAV	62 / 8 AA	41
Phosphosite 18:	GPR34	Q9UPC5	Y153	GFISLDRYIKINRSI	66 / 9 AA	44
Phosphosite 19:	OR2B11	Q5JQS5	Y127	AAMALDRYVAICKPL	62 / 8 AA	35
Phosphosite 20:	OR52K1	Q8NGK4	Y125	LAMAFDRYVAICKPL	62 / 8 AA	35