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:	EXTL1
Human P-Site:	S503
P-Site Sequence:	LDARSSLSTSEVDFA
UniProt:	Q92935
Intern. Prot. ID:

Protein Phosphosite Match	Human Protein Short Name	Human UniProt. ID	Phosphosite Number	Sequence	% Identity / # AA	Target Size kDa
Phosphosite 0:	EXTL1	Q92935	S503	LDARSSLSTSEVDFA	100 / 9 AA	75
Phosphosite 1:	EXTL1	Q92935	T504	DARSSLSTSEVDFAF	100 / 8 AA	75
Phosphosite 2:	TDRD5	Q8NAT2	S397	SPPRNSLSTAAVKET	66 / 9 AA	110
Phosphosite 3:	FAM5C	Q76B58	S735	LRHRLKLSTSEVVRI	77 / 9 AA	88
Phosphosite 4:	EXTL1	Q92935	S501	LSLDARSSLSTSEVD	100 / 7 AA	75
Phosphosite 5:	ARL4A	P40617	S143	QDLRNSLSLSEIEKL	66 / 9 AA	23
Phosphosite 6:	RTTN	Q86VV8	S1546	DRDPSSLSTSETTVA	77 / 9 AA	249
Phosphosite 7:	RNF123	Q5XPI4	S700	MTPRRPLSTSEKVKV	75 / 8 AA	148
Phosphosite 8:	MACF1	Q9UPN3	S2589	GDVSLSTSQVQKELQ	85 / 7 AA	620
Phosphosite 9:	MACF1	Q96PK2	S3091	GDVSLSTSQVQKELQ	85 / 7 AA	670
Phosphosite 10:	ARAP1	Q96P48	S533	GAIAEALSTSEVAER	85 / 7 AA	162
Phosphosite 11:	ANKFN1	Q8N957	S578	QSQRKSLSTPEEPTA	75 / 8 AA	88
Phosphosite 12:	RTTN	Q86VV8	T1547	RDPSSLSTSETTVAP	87 / 8 AA	249
Phosphosite 13:	C7orf63	A5D8W1	S225	LKVLQHLSTSEVNCT	100 / 6 AA	106
Phosphosite 14:	LUZP1	Q86V48	T998	RRTQSSLTVSEVLTR	66 / 9 AA	120
Phosphosite 15:	CXCR5	P32302	S361	SWRRSSLSESENATS	87 / 8 AA	42
Phosphosite 16:	FAM5C	Q76B58	S737	HRLKLSTSEVVRIQS	100 / 6 AA	88
Phosphosite 17:	AHNAK2	Q8IVF2	S5293	GMTGDELSTSEVRIH	100 / 6 AA	617
Phosphosite 18:	MACF1	Q9UPN3	S2587	GPGDVSLSTSQVQKE	85 / 7 AA	620
Phosphosite 19:	MACF1	Q96PK2	S3089	GPGDVSLSTSQVQKE	85 / 7 AA	670
Phosphosite 20:	AHNAK2	Q8IVF2	S5295	TGDELSTSEVRIHPS	100 / 6 AA	617