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:	STX3
Human P-Site:	S258
P-Site Sequence:	KKAVKYQSQARKKLI
UniProt:	Q13277
Intern. Prot. ID:

Protein Phosphosite Match	Human Protein Short Name	Human UniProt. ID	Phosphosite Number	Sequence	% Identity / # AA	Target Size kDa
Phosphosite 0:	STX3	Q13277	S258	KKAVKYQSQARKKLI	100 / 9 AA	33
Phosphosite 1:	STX1A	Q16623	S259	KKAVKYQSKARRKKI	77 / 9 AA	33
Phosphosite 2:	STX1B	P61266	S258	KKAVKYQSKARRKKI	77 / 9 AA	33
Phosphosite 3:	STX3	Q13277	Y256	ETKKAVKYQSQARKK	100 / 7 AA	33
Phosphosite 4:	STX2	P32856	S258	KKAIKYQSKARRKKW	66 / 9 AA	33
Phosphosite 5:	COL19A1	Q14993	S724	GEPGKYDSMARKGDI	75 / 8 AA	115
Phosphosite 6:	STX1A	Q16623	Y257	DTKKAVKYQSKARRK	85 / 7 AA	33
Phosphosite 7:	STX1B	P61266	Y256	DTKKAVKYQSKARRK	85 / 7 AA	33
Phosphosite 8:	ODZ1	Q9UKZ4	S59	ELRMNYNSQSRKRKE	55 / 9 AA	305
Phosphosite 9:	WDHD1	O75717	S801	NLAIKYASRSRKLIL	55 / 9 AA	126
Phosphosite 10:	CNKSR1	Q969H4	S506	TCISKYQSPGRAPPP	71 / 7 AA	80
Phosphosite 11:	C4orf31	Q8TB73	S559	GHSVKYQSKVVKTRK	66 / 9 AA	65
Phosphosite 12:	NARF	Q9UHQ1	S444	VLHTTYQSQERGTHS	62 / 8 AA	51
Phosphosite 13:	STX2	P32856	Y256	ETKKAIKYQSKARRK	71 / 7 AA	33
Phosphosite 14:	PRMT10	Q6P2P2	S337	PTNVKFQSPAYSSVD	71 / 7 AA	95
Phosphosite 15:	SNAI1	O95863	Y236	THSDVKKYQCQACAR	83 / 6 AA	29
Phosphosite 16:	USP12	O75317	S72	EKVLAYKSQPRKKES	71 / 7 AA	43
Phosphosite 17:	RFX7	Q2KHR2	S1012	VPGQSYQSQSRHHDT	83 / 6 AA	147
Phosphosite 18:	CTTNBP2NL	Q9P2B4	S468	AARHKFQSQADQDQQ	83 / 6 AA	70
Phosphosite 19:	Tyk2	P29597	Y1176	LKTVHEKYQGQAPSV	83 / 6 AA	134
Phosphosite 20:	ZNF638	Q14966	S375	GSKKNYQSQADIPIR	83 / 6 AA	221