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:	EXT1
Human P-Site:	S141
P-Site Sequence:	ILAAIEGSRFYTSDP
UniProt:	Q16394
Intern. Prot. ID:	IPI00293128

Protein Phosphosite Match	Human Protein Short Name	Human UniProt. ID	Phosphosite Number	Sequence	% Identity / # AA	Target Size kDa
Phosphosite 0:	EXT1	Q16394	S141	ILAAIEGSRFYTSDP	100 / 9 AA	86
Phosphosite 1:	EXT1	Q16394	Y144	AIEGSRFYTSDPSQA	100 / 6 AA	86
Phosphosite 2:	RUSC2	Q8N2Y8	S1289	IDGSIEGSRFPRGSS	85 / 7 AA	161
Phosphosite 3:	EXTL1	Q92935	Y124	SIEGSRFYTFSPAGA	100 / 6 AA	75
Phosphosite 4:	CDK20	Q8IZL9	S157	RVFSPDGSRLYTHQV	71 / 7 AA	39
Phosphosite 5:	ADARB1	P78563	S469	PILEGSRSYTQAGVQ	85 / 7 AA	81
Phosphosite 6:	PAN3	Q58A45	Y608	PMIGARFYTQLDAAQ	83 / 6 AA	82
Phosphosite 7:	CDK3	Q00526	S177	APEILLGSKFYTTAV	83 / 6 AA	35
Phosphosite 8:	USP11	P51784	S584	RIEAIEGSREDIVVP	100 / 6 AA	110
Phosphosite 9:	CDK20	Q8IZL9	Y160	SPDGSRLYTHQVATR	83 / 6 AA	39
Phosphosite 10:	FGF22	Q9HCT0	Y109	RLYGSRLYTVDCRFR	83 / 6 AA	20
Phosphosite 11:	CSMD2	Q7Z408	S535	AYGRREGSRFHHGDT	83 / 6 AA	380
Phosphosite 12:	POLK	Q9UBT6	Y50	ATKGSRFYGNELKKE	100 / 5 AA	99
Phosphosite 13:	Nsg2	Q9Y328	T134	NSRSRFYTVISHYSV	100 / 5 AA	19
Phosphosite 14:	MTF2	Q9Y483	Y245	MLFGDRFYTFICSVC	83 / 6 AA	67
Phosphosite 15:	EXT1	Q16394	T145	IEGSRFYTSDPSQAC	100 / 5 AA	86
Phosphosite 16:	Nsg2	Q9Y328	Y133	PNSRSRFYTVISHYS	100 / 5 AA	19
Phosphosite 17:	TEAD4	Q15561	S312	NIEDEGSSFYGVSSQ	83 / 6 AA	48
Phosphosite 18:	NDUFA8	P51970	Y168	ATHGSRFYFWTK___	100 / 5 AA	20
Phosphosite 19:	TEAD4	Q15561	S311	TNIEDEGSSFYGVSS	83 / 6 AA	48
Phosphosite 20:	ARHGEF5	Q12774	S1435	LSRPREGSRFLVFDH	55 / 9 AA	177