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:	ARPP-21
Human P-Site:	S423
P-Site Sequence:	AGSSGSLSRTHPPLQ
UniProt:	Q9UBL0
Intern. Prot. ID:

Protein Phosphosite Match	Human Protein Short Name	Human UniProt. ID	Phosphosite Number	Sequence	% Identity / # AA	Target Size kDa
Phosphosite 0:	ARPP-21	Q9UBL0	S423	AGSSGSLSRTHPPLQ	100 / 9 AA	89
Phosphosite 1:	ARPP-21	Q9UBL0	T425	SSGSLSRTHPPLQST	100 / 7 AA	89
Phosphosite 2:	Abi-1	Q8IZP0	S172	PARTGTLSRTNPPTQ	66 / 9 AA	55
Phosphosite 3:	CBFA2T3	O75081	S23	GSTCGSMSQTHPVLE	66 / 9 AA	71
Phosphosite 4:	NOTCH2	Q04721	S2242	SGSAGSLSRLHPVPV	77 / 9 AA	265
Phosphosite 5:	HK1	P19367	Y417	VGVDGSLYKTHPQYS	75 / 8 AA	102
Phosphosite 6:	SULT1A2	P50226	T185	EWWELSRTHPVLYLF	100 / 6 AA	34
Phosphosite 7:	SULT1A1	P50225	T185	EWWELSRTHPVLYLF	100 / 6 AA	34
Phosphosite 8:	SULT1A3	P50224	T185	EWWELSRTHPVLYLF	100 / 6 AA	34
Phosphosite 9:	ARHGEF17	Q96PE2	S948	QDQTGSLSRARPSSR	66 / 9 AA	222
Phosphosite 10:	SOAT2	O75908	S91	PPPPGSLSRTQEPSL	85 / 7 AA	60
Phosphosite 11:	SLC4A1AP	Q9BWU0	S675	KLEDGSLSRPQPEIE	75 / 8 AA	89
Phosphosite 12:	ARPP-21	Q9UBL0	S421	SSAGSSGSLSRTHPP	100 / 7 AA	89
Phosphosite 13:	KIAA1486	Q9P242	S466	AVHSGSLSRSSPSVP	77 / 9 AA	71
Phosphosite 14:	CDON	Q4KMG0	T1078	SGHSNSLTRTHVDFE	75 / 8 AA	139
Phosphosite 15:	RIMS2	Q9UQ26	S1136	APPSPALSRSHPRTG	66 / 9 AA	160
Phosphosite 16:	ARX	Q96QS3	S405	LPFPGPLSATHPLSP	66 / 9 AA	58
Phosphosite 17:	LDH-B	P07195	S269	ESMLKNLSRIHPVST	71 / 7 AA	37
Phosphosite 18:	STK33	Q9BYT3	S508	PAKSGALSRTKKKL_	85 / 7 AA	58
Phosphosite 19:	SOAT2	O75908	S89	LPPPPPGSLSRTQEP	100 / 6 AA	60
Phosphosite 20:	C3orf53	Q8N290	S106	APPAVPLSRAHPGGG	55 / 9 AA	23