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:	S277
P-Site Sequence:	IYFLLESSTGHSNRF
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	S277	IYFLLESSTGHSNRF	100 / 9 AA	40
Phosphosite 1:	GPR21	Q99679	S276	IIYFLLESSTGHSNR	100 / 8 AA	40
Phosphosite 2:	LRRFIP1	Q32MZ4	S467	VPQELETSTGHSLEK	87 / 8 AA	89
Phosphosite 3:	SORCS3	Q9UPU3	S1119	LAPLVDSSAGHSSSA	66 / 9 AA	136
Phosphosite 4:	SETD3	Q86TU7	S513	NLGLLESSVGDSRLP	77 / 9 AA	67
Phosphosite 5:	RIMS2	Q9UQ26	T1404	QSSLESSTGPSYSRS	87 / 8 AA	160
Phosphosite 6:	RIMS2	Q9UQ26	S1403	SQSSLESSTGPSYSR	87 / 8 AA	160
Phosphosite 7:	EML6	Q6ZMW3	S145	RKGKLLASATGHSDR	75 / 8 AA	217
Phosphosite 8:	NCOA7	Q8NI08	S354	PIVPLEKSTGHTPTK	75 / 8 AA	106
Phosphosite 9:	BRIP1	Q9BX63	S46	KQHCLLESPTGSGKS	85 / 7 AA	141
Phosphosite 10:	KIAA1549	Q9HCM3	S8	MELVLKKSTGHSAAQ	66 / 9 AA	203
Phosphosite 11:	MACF1	Q9UPN3	S4335	AGNELLESSAGDDAS	75 / 8 AA	620
Phosphosite 12:	MACF1	Q96PK2	S4837	AGNELLESSAGDDAS	75 / 8 AA	670
Phosphosite 13:	FHDC1	Q9C0D6	S557	ELLTFLESSTGSPEE	85 / 7 AA	125
Phosphosite 14:	RIMS1	Q86UR5	S1684	SQSSLESSTGPPCIR	75 / 8 AA	189
Phosphosite 15:	ZBTB20	Q9HC78	S563	APQPLASSAGHSTAS	75 / 8 AA	81
Phosphosite 16:	SETD3	Q86TU7	S512	SNLGLLESSVGDSRL	75 / 8 AA	67
Phosphosite 17:	NRAP	Q86VF7	S379	EYKKDLESSRGHSIN	85 / 7 AA	197
Phosphosite 18:	RIMS2	Q9UQ26	S1402	ASQSSLESSTGPSYS	85 / 7 AA	160
Phosphosite 19:	RIMS1	Q86UR5	S1683	ASQSSLESSTGPPCI	85 / 7 AA	189
Phosphosite 20:	TEX15	Q9BXT5	S735	GEMEVLESTTGRENS	62 / 8 AA	315