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:	HTT
Human P-Site:	S2688
P-Site Sequence:	YSRWILPSSSARRTP
UniProt:	P42858
Intern. Prot. ID:	IPI00002335

Protein Phosphosite Match	Human Protein Short Name	Human UniProt. ID	Phosphosite Number	Sequence	% Identity / # AA	Target Size kDa
Phosphosite 0:	HTT	P42858	S2688	YSRWILPSSSARRTP	100 / 9 AA	348
Phosphosite 1:	JNK2	P45984	S282	FPDWIFPSESERDKI	66 / 9 AA	48
Phosphosite 2:	CALU	O43852	S261	TKDWILPSDYDHAEA	55 / 9 AA	37
Phosphosite 3:	GPR133	Q6QNK2	S828	TKVWSLTSSSARTSN	77 / 9 AA	97
Phosphosite 4:	C8orf34	Q49A92	S417	HQPWILPSDTESEGV	62 / 8 AA	50
Phosphosite 5:	ITIH5L	Q6UXX5	S637	PDTIMPSSSSRHGLG	75 / 8 AA	143
Phosphosite 6:	ITIH5L	Q6UXX5	S636	GPDTIMPSSSSRHGL	75 / 8 AA	143
Phosphosite 7:	SI1	Q9P2N6	S895	SSSQVLPSSSQRLPP	75 / 8 AA	96
Phosphosite 8:	Mpl	P40238	S574	LLEILPKSSERTPLP	75 / 8 AA	71
Phosphosite 9:	OR1J4	Q8NGS1	S263	IGLYFLPSSSASSDK	75 / 8 AA	35
Phosphosite 10:	SI1	Q9P2N6	S896	SSQVLPSSSQRLPPA	75 / 8 AA	96
Phosphosite 11:	PHKA1	P46020	S1095	EGFVLPSSTTREMTP	62 / 8 AA	137
Phosphosite 12:	PHKA2	P46019	S1108	DGYVLPSSTTREMTP	62 / 8 AA	138
Phosphosite 13:	C11orf57	Q6ZUT1	S54	TKRKMLPSSSSRMRS	75 / 8 AA	34
Phosphosite 14:	HHLA2	Q9UM44	S52	EDIILPSSFERGSEV	75 / 8 AA	47
Phosphosite 15:	C11orf57	Q6ZUT1	S55	KRKMLPSSSSRMRSD	75 / 8 AA	34
Phosphosite 16:	HHLA2	Q9UM44	S51	DEDIILPSSFERGSE	75 / 8 AA	47
Phosphosite 17:	MAST4	O15021	S1849	VPPVLPSSSGKKNDT	62 / 8 AA	284
Phosphosite 18:	PARC	Q8IWT3	S1467	PSPVLPSSSLRNITQ	75 / 8 AA	281
Phosphosite 19:	THBS4	P35443	S36	QVFDLLPSSSQRLNP	75 / 8 AA	106
Phosphosite 20:	THBS4	P35443	S37	VFDLLPSSSQRLNPG	75 / 8 AA	106