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:	S277
P-Site Sequence:	RYLTGIGSDTRNALY
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	S277	RYLTGIGSDTRNALY	100 / 9 AA	86
Phosphosite 1:	EXT1	Q16394	T279	LTGIGSDTRNALYHV	100 / 7 AA	86
Phosphosite 2:	TNFAIP3	P21580	Y159	FVETGLCYDTRNWND	66 / 9 AA	90
Phosphosite 3:	WDR42C	P0C7V8	S55	VTVTGDGSDSRDGGF	66 / 9 AA	68
Phosphosite 4:	WDR24	Q96S15	S626	DMAPGLGSETRLDRS	71 / 7 AA	102
Phosphosite 5:	C20orf19	Q2M2Z5	S256	THCLEIGSNTRHGKS	71 / 7 AA	75
Phosphosite 6:	FNIP1	Q8TF40	S1019	FVLQGIGSDERFRQC	85 / 7 AA	131
Phosphosite 7:	CHRM3	P20309	S359	SDEEDIGSETRAIYS	83 / 6 AA	66
Phosphosite 8:	CHN1	P15882	T92	ALRFGSQTRNFRLYY	71 / 7 AA	53
Phosphosite 9:	FAT	Q14517	S4264	SYTPSIPSDSRNNLD	62 / 8 AA	506
Phosphosite 10:	CHN1	P15882	S90	TLALRFGSQTRNFRL	71 / 7 AA	53
Phosphosite 11:	USP54	Q70EL1	S389	GREPSISSDTRTDSS	71 / 7 AA	187
Phosphosite 12:	USP54	Q70EL1	S388	SGREPSISSDTRTDS	71 / 7 AA	187
Phosphosite 13:	EFCAB3	Q8N7B9	S366	GDLIGMDSRNESFYD	71 / 7 AA	50
Phosphosite 14:	USP10	Q14694	S234	PFPGALGSDTRTAGQ	71 / 7 AA	87
Phosphosite 15:	USP10	Q14694	T236	PGALGSDTRTAGQPE	83 / 6 AA	87
Phosphosite 16:	MLF1IP	Q71F23	S229	SRSKAIGSDTSDIVH	62 / 8 AA	48
Phosphosite 17:	CACNA1H	O95180	T1464	YYCEGPDTRNISTKA	83 / 6 AA	259
Phosphosite 18:	VPS13B	Q7Z7G8	S1798	AQDSGIGSDSVKIRI	71 / 7 AA	449
Phosphosite 19:	FAT	Q14517	S4266	TPSIPSDSRNNLDRN	71 / 7 AA	506
Phosphosite 20:	STAP1	Q9ULZ2	S208	ILRPGSDSRNYSITI	83 / 6 AA	34