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:	S1721
P-Site Sequence:	NRLRDGDSTSTLEEH
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	S1721	NRLRDGDSTSTLEEH	100 / 9 AA	348
Phosphosite 1:	HTT	P42858	T1722	RLRDGDSTSTLEEHS	100 / 8 AA	348
Phosphosite 2:	DUSP27	Q5VZP5	T675	SVSADGDTTSVLSTQ	75 / 8 AA	130
Phosphosite 3:	DUSP27	Q5VZP5	T676	VSADGDTTSVLSTQS	75 / 8 AA	130
Phosphosite 4:	ATRIP	Q8WXE1	T523	RLSDGDMTSALRGVA	75 / 8 AA	86
Phosphosite 5:	CNTROB	Q8N137	S140	EDSFDSDSTATLLNT	75 / 8 AA	101
Phosphosite 6:	PLEKHH2	Q8IVE3	S496	LDLVDGDSTEVLENM	75 / 8 AA	168
Phosphosite 7:	MYO5B	Q9ULV0	S348	QAERDGDSCSISPQD	75 / 8 AA	214
Phosphosite 8:	PLEKHH2	Q8IVE3	T497	DLVDGDSTEVLENMD	75 / 8 AA	168
Phosphosite 9:	USP4	Q13107	S265	SLIANGDSTSTCGMH	85 / 7 AA	109
Phosphosite 10:	CUL7	Q14999	S914	VCGGDSTSSLHTELN	85 / 7 AA	191
Phosphosite 11:	USP4	Q13107	T266	LIANGDSTSTCGMHS	85 / 7 AA	109
Phosphosite 12:	ZNF644	Q9H582	S639	EEPVDSDSTKTLTKQ	75 / 8 AA	150
Phosphosite 13:	LUC7L2	Q9Y383	T23	GTSRDGDTTRQRIKF	71 / 7 AA	47
Phosphosite 14:	USP4	Q13107	S267	IANGDSTSTCGMHSS	100 / 6 AA	109
Phosphosite 15:	MCM4	P33991	S42	QRRRGEDSTSTGELQ	75 / 8 AA	97
Phosphosite 16:	FAM53A	Q6NSI3	S376	GDPRDGDSVGEEGVF	71 / 7 AA	43
Phosphosite 17:	ARMC9	Q7Z3E5	S91	SSIRDGDSFAQKLEF	100 / 5 AA	92
Phosphosite 18:	TEKT5	Q96M29	T71	CPDESTSTLRPPTIL	83 / 6 AA	56
Phosphosite 19:	ZDHHC11	Q9H8X9	S338	SVNQDGDSTAREGDE	71 / 7 AA	46
Phosphosite 20:	IRX3	P78415	T141	ATRESTSTLKAWLNE	83 / 6 AA	52