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:	S517
P-Site Sequence:	RSAMVGQSQQQPPQQ
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	S517	RSAMVGQSQQQPPQQ	100 / 9 AA	89
Phosphosite 1:	MYST2	O95251	S80	STRRVTRSQQQPTPV	66 / 9 AA	71
Phosphosite 2:	TAF4	O00268	S678	SAAFIQQSQQQPPPP	66 / 9 AA	110
Phosphosite 3:	PACS1	Q6VY07	S28	RGSGVAQSPQQPPPQ	75 / 8 AA	105
Phosphosite 4:	CASKIN2	Q8WXE0	S711	RSRGSGHSQEQPAPQ	71 / 7 AA	127
Phosphosite 5:	POU6F2	P78424	S207	APQAPSQSQQQPLQP	85 / 7 AA	72
Phosphosite 6:	Lyn	P07948	Y508	YTATEGQYQQQP___	85 / 7 AA	59
Phosphosite 7:	VEZT	Q9HBM0	S125	SILSAGQSQQQENGH	85 / 7 AA	89
Phosphosite 8:	CLASP2	O75122	S453	RSRTKMVSQSQPGSR	83 / 6 AA	141
Phosphosite 9:	FGF21	Q9NSA1	S200	PLSMVGPSQGRSPSY	83 / 6 AA	22
Phosphosite 10:	KIAA1958	Q8N8K9	S370	TEPEVSSSQQQPPVA	75 / 8 AA	79
Phosphosite 11:	ANKRD50	Q9ULJ7	S1342	AQQEIGRSQQQFLIH	71 / 7 AA	150
Phosphosite 12:	PDE1A	P54750	S416	KSTMVAQSQIGFIDF	83 / 6 AA	61
Phosphosite 13:	CLASP2	O75122	S455	RTKMVSQSQPGSRSG	83 / 6 AA	141
Phosphosite 14:	14-3-3 zeta	P63104	S145	KKGIVDQSQQAYQEA	71 / 7 AA	28
Phosphosite 15:	ECM1	Q16610	S73	GPPFEGQSQVQPPPS	85 / 7 AA	61
Phosphosite 16:	CCDC90B	Q9GZT6	T104	TIYKEMVTQAQQEIT	71 / 7 AA	29
Phosphosite 17:	RBM33	Q96EV2	S922	QTRTVPQSQTQPLHK	66 / 9 AA	130
Phosphosite 18:	USP36	Q9P275	T865	SALQEGQTQRQPGSP	71 / 7 AA	123
Phosphosite 19:	MAML2	Q8IZL2	S410	PIPSVPQSQAQPQTG	75 / 8 AA	125