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:	Ataxin-3
Human P-Site:	S260
P-Site Sequence:	IQLSMQGSSRNISQD
UniProt:	P54252
Intern. Prot. ID:	IPI00005495

Protein Phosphosite Match	Human Protein Short Name	Human UniProt. ID	Phosphosite Number	Sequence	% Identity / # AA	Target Size kDa
Phosphosite 0:	Ataxin-3	P54252	S260	IQLSMQGSSRNISQD	100 / 9 AA	42
Phosphosite 1:	POLR2A	P24928	S269	PAVVMQGSARNQDDL	85 / 7 AA	217
Phosphosite 2:	DOCK7	Q96N67	S579	NFANRQGSARNITVK	66 / 9 AA	243
Phosphosite 3:	BCAS3	Q9H6U6	S805	DPVSMPGSSRPVSDR	66 / 9 AA	101
Phosphosite 4:	ATXN3L	Q9H3M9	S258	IELSMQGSSGNTSQD	77 / 9 AA	41
Phosphosite 5:	COG5	Q9UP83	S197	QGQLQGGSREITKAA	62 / 8 AA	93
Phosphosite 6:	RAB3B	P20337	S200	TDPSMLGSSKNTRLS	66 / 9 AA	25
Phosphosite 7:	SAMD4B	Q5PRF9	S289	EQTEEQGSSRNTFQE	85 / 7 AA	75
Phosphosite 8:	SAMD4B	Q5PRF9	S290	QTEEQGSSRNTFQED	85 / 7 AA	75
Phosphosite 9:	UNC13B	O14795	S231	QQLLLQGSSRDSCND	71 / 7 AA	181
Phosphosite 10:	UNC13B	O14795	S232	QLLLQGSSRDSCNDS	71 / 7 AA	181
Phosphosite 11:	MED12L	Q86YW9	S58	FTGDEHGSARNIVIN	71 / 7 AA	240
Phosphosite 12:	MARK3	P27448	S662	NGRYEGSSRNVSAEQ	71 / 7 AA	87
Phosphosite 13:	MARK3	P27448	S661	RNGRYEGSSRNVSAE	71 / 7 AA	87
Phosphosite 14:	NUP210	Q8TEM1	S333	SIRMQGASRLPNSTI	83 / 6 AA	205
Phosphosite 15:	BCAS3	Q9H6U6	S806	PVSMPGSSRPVSDRR	62 / 8 AA	101
Phosphosite 16:	CDC42BPB	Q9Y5S2	S474	TVQSLHGSSRALSNS	55 / 9 AA	194
Phosphosite 17:	ROMK	P48048	S4	____MNASSRNVFDT	62 / 8 AA	45
Phosphosite 18:	USP34	Q70CQ2	S564	TEESMQGSSDETANS	100 / 6 AA	404
Phosphosite 19:	RP1	P56715	S1458	ITNSMTSSERNISEL	66 / 9 AA	241
Phosphosite 20:	SH2D4A	Q9H788	S176	KIRSLSSSSRNIQQM	66 / 9 AA	53