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:	S56
P-Site Sequence:	QNQERRKSKSGAGKG
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	S56	QNQERRKSKSGAGKG	100 / 9 AA	89
Phosphosite 1:	ATAD2B	Q9ULI0	S350	ERFERRKSKSMARAR	88 / 9 AA	165
Phosphosite 2:	DENND5B	Q6ZUT9	S833	LGPERRKSDSGVMLP	77 / 9 AA	145
Phosphosite 3:	CDC25A	P30304	S293	GSTKRRKSMSGASPK	87 / 8 AA	59
Phosphosite 4:	ARPP-21	Q9UBL0	S58	QERRKSKSGAGKGKL	100 / 7 AA	89
Phosphosite 5:	CDC25A	P30304	S295	TKRRKSMSGASPKES	85 / 7 AA	59
Phosphosite 6:	PRPF4B	Q13523	S223	KSKERKKSKSPSKRS	85 / 7 AA	117
Phosphosite 7:	SFRS12	Q8WXA9	S251	KSRERRKSRSRSHSR	85 / 7 AA	59
Phosphosite 8:	GSPT2	Q8IYD1	S189	EKEEIRKSKSVIVPS	85 / 7 AA	69
Phosphosite 9:	ARID4A	P29374	S664	RDEERQKSKRGRPPL	75 / 8 AA	143
Phosphosite 10:	RBM39	Q14498	S66	RDRERKKSKSRERKR	85 / 7 AA	59
Phosphosite 11:	SFRS12	Q8WXA9	S235	RQKDRRRSKSPHKKR	71 / 7 AA	59
Phosphosite 12:	KIAA2022	Q5QGS0	S350	TTCPKRESKSGALKQ	75 / 8 AA	168
Phosphosite 13:	CCNL2	Q96S94	S406	ASPKRRKSDSGSTSG	75 / 8 AA	58
Phosphosite 14:	C1orf144	Q7Z422	S37	TQKESRKSKSPPKVP	66 / 9 AA	17
Phosphosite 15:	LONP1	P36776	S239	KHKPRRKSKRGKKEA	85 / 7 AA	106
Phosphosite 16:	SLC25A17	O43808	S45	QVDEKRKSKTTHMVL	71 / 7 AA	35
Phosphosite 17:	CROP	O95232	S353	RSRDRRRSKSRDRKS	71 / 7 AA	51
Phosphosite 18:	ABCA6	Q8N139	S249	VTKERKKSKNLMKMM	71 / 7 AA	184
Phosphosite 19:	C1orf131	Q8NDD1	S252	GQEDRRKSKKKSAPS	83 / 6 AA	33
Phosphosite 20:	PIK3C2G	O75747	T1380	SEVLRRKTKSVPKCT	62 / 8 AA	166