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:	RGS21
Human P-Site:	S139
P-Site Sequence:	IYKKLVNSQQVPNHK
UniProt:	Q2M5E4
Intern. Prot. ID:

Protein Phosphosite Match	Human Protein Short Name	Human UniProt. ID	Phosphosite Number	Sequence	% Identity / # AA	Target Size kDa
Phosphosite 0:	RGS21	Q2M5E4	S139	IYKKLVNSQQVPNHK	100 / 9 AA	18
Phosphosite 1:	NEB	P20929	S2090	DDPKLVHSMQVAKMQ	66 / 9 AA	773
Phosphosite 2:	RGS12	O14924	S844	EGRALPDSQQVPSSP	75 / 8 AA	156
Phosphosite 3:	PMS2	P54278	T597	ICQKLVNTQDMSASQ	55 / 9 AA	96
Phosphosite 4:	STX17	P56962	S195	DFSLLVNSQQEKIDS	100 / 6 AA	33
Phosphosite 5:	HERC3	Q15034	S473	LFEKLMNSQHSMILE	71 / 7 AA	117
Phosphosite 6:	SPIRE1	Q08AE8	S443	KENGLSTSQQVPAQR	75 / 8 AA	86
Phosphosite 7:	DST	Q03001	S2553	DSFKLINSQFPFPQI	83 / 6 AA	372
Phosphosite 8:	MACF1	Q9UPN3	S3412	TEKKLANSEPVGTQT	62 / 8 AA	620
Phosphosite 9:	MACF1	Q96PK2	S3914	TEKKLANSEPVGTQT	62 / 8 AA	670
Phosphosite 10:	SERPINI2	O75830	T267	EEVEKLITAQQILKW	50 / 8 AA	46
Phosphosite 11:	PIK3CA	P42336	T373	PLCDNVNTQRVPCSN	71 / 7 AA	124
Phosphosite 12:	ARL6IP2	Q8NHH9	S51	EDDDLVNSDEVMKKP	71 / 7 AA	66
Phosphosite 13:	ERK1	P27361	S135	DLYKLLKSQQLSNDH	55 / 9 AA	43
Phosphosite 14:	dyskerin	O60832	S145	RATRLVKSQQSAGKE	71 / 7 AA	58
Phosphosite 15:	BRD7	Q9NPI1	S336	LTRRLVNSQCEFERR	83 / 6 AA	74
Phosphosite 16:	RB1CC1	Q8TDY2	S1222	DRQKLVSSQEQDREQ	71 / 7 AA	183
Phosphosite 17:	REST	Q13127	S555	ESKSKNNSQEVPKGD	83 / 6 AA	122
Phosphosite 18:	RAI2	Q9Y5P3	S510	IKLKKVNSQEIHMLP	55 / 9 AA	57
Phosphosite 19:	STARD9	Q9P2P6	S1726	QNSKIASSQQVTAEI	62 / 8 AA	507
Phosphosite 20:	STARD9	Q9P2P6	S1725	NQNSKIASSQQVTAE	62 / 8 AA	507