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:	ATXN1
Human P-Site:	S23
P-Site Sequence:	KREIPATSRSSEEKA
UniProt:	P54253
Intern. Prot. ID:	IPI00432008

Protein Phosphosite Match	Human Protein Short Name	Human UniProt. ID	Phosphosite Number	Sequence	% Identity / # AA	Target Size kDa
Phosphosite 0:	ATXN1	P54253	S23	KREIPATSRSSEEKA	100 / 9 AA	87
Phosphosite 1:	ATXN1	P54253	T22	KKREIPATSRSSEEK	100 / 8 AA	87
Phosphosite 2:	CCDC22	O60826	S319	VSDVPATSRRPEQVT	66 / 9 AA	71
Phosphosite 3:	C5orf55	Q8N2X6	T52	QTSVIPATSRQAALG	100 / 6 AA	13
Phosphosite 4:	ATXN1	P54253	S25	EIPATSRSSEEKAPT	100 / 7 AA	87
Phosphosite 5:	LMBR1	Q8WVP7	S473	KLHLPNTSRDSETAK	66 / 9 AA	55
Phosphosite 6:	KIF4B	Q2VIQ3	S505	VETSPETSRSSDAFT	75 / 8 AA	140
Phosphosite 7:	KIF4A	O95239	S505	VETSPETSRSSDAFT	75 / 8 AA	140
Phosphosite 8:	RIMS1	Q86UR5	S1215	RGKHPARSRSSEHSS	87 / 8 AA	189
Phosphosite 9:	LTBP4	Q8N2S1	T497	QPRTLPATSRPSAGF	75 / 8 AA	173
Phosphosite 10:	CIRH1A	Q969X6	S270	FQLVPVTSNSSEKQW	66 / 9 AA	77
Phosphosite 11:	KIAA1117	Q5JWR5	S595	DGENPPSSRSSESGF	75 / 8 AA	277
Phosphosite 12:	FLJ34931	A6NGG8	S931	LSSPPATSQSPEVKG	75 / 8 AA	140
Phosphosite 13:	CATSPER1	Q8NEC5	T330	SQLSIPHTSRSLIHD	85 / 7 AA	90
Phosphosite 14:	POLR2C	P19387	T131	SPRVIPVTSRNRDND	71 / 7 AA	31
Phosphosite 15:	SORBS1	Q9BX66	S913	EGRIPGTSRQGIFPI	83 / 6 AA	142
Phosphosite 16:	SORBS1	Q9BX66	T912	YEGRIPGTSRQGIFP	83 / 6 AA	142
Phosphosite 17:	GDE	P35573	T1277	RNRGIPATPRDGSAV	62 / 8 AA	175
Phosphosite 18:	LRP5	O75197	T1524	YSSNIPATARPYRPY	71 / 7 AA	179
Phosphosite 19:	UPP2	O95045	S8	MASVIPASNRSMRSD	71 / 7 AA	36
Phosphosite 20:	CCDC22	O60826	T318	QVSDVPATSRRPEQV	83 / 6 AA	71