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:	spermidine synthase
Human P-Site:	S145
P-Site Sequence:	PGMAIGYSSSKLTLH
UniProt:	P19623
Intern. Prot. ID:	IPI00292020

Protein Phosphosite Match	Human Protein Short Name	Human UniProt. ID	Phosphosite Number	Sequence	% Identity / # AA	Target Size kDa
Phosphosite 0:	spermidine synthase	P19623	S145	PGMAIGYSSSKLTLH	100 / 9 AA	34
Phosphosite 1:	spermidine synthase	P19623	S147	MAIGYSSSKLTLHVG	100 / 7 AA	34
Phosphosite 2:	WASF4	Q8IV90	S112	PHRGYNSSKLHNRGI	85 / 7 AA	68
Phosphosite 3:	Dicer1	Q9UPY3	S1286	QSPSIGYSSRTLGPN	66 / 9 AA	219
Phosphosite 4:	Dicer1	Q9UPY3	S1287	SPSIGYSSRTLGPNP	75 / 8 AA	219
Phosphosite 5:	DHRSX	Q8N5I4	S58	GTDGIGYSTAKHLAR	62 / 8 AA	36
Phosphosite 6:	DHRSX	Q8N5I4	Y57	GGTDGIGYSTAKHLA	62 / 8 AA	36
Phosphosite 7:	ITLN1	Q8WWA0	S298	YGTHVGYSSSREITE	71 / 7 AA	35
Phosphosite 8:	ITLN1	Q8WWA0	Y297	GYGTHVGYSSSREIT	71 / 7 AA	35
Phosphosite 9:	ITSN2	Q9NZM3	S183	PLPIPYSSSTLPHGS	75 / 8 AA	193
Phosphosite 10:	VPS13C	Q709C8	S515	LFTAIGYSESTHNLT	75 / 8 AA	422
Phosphosite 11:	ITLN1	Q8WWA0	S299	GTHVGYSSSREITEA	71 / 7 AA	35
Phosphosite 12:	ACSL3	O95573	S353	GCRIGYSSPQTLADQ	71 / 7 AA	80
Phosphosite 13:	ACSL3	O95573	S352	HGCRIGYSSPQTLAD	71 / 7 AA	80
Phosphosite 14:	ACSL3	O95573	Y351	SHGCRIGYSSPQTLA	71 / 7 AA	80
Phosphosite 15:	piccolo	Q9Y6V0	S3532	TPLEIGYSSHLRADS	83 / 6 AA	567
Phosphosite 16:	VIT	Q6UXI7	Y152	TYPSALTYSSSKSPA	75 / 8 AA	74
Phosphosite 17:	VIT	Q6UXI7	S153	YPSALTYSSSKSPAA	75 / 8 AA	74
Phosphosite 18:	NFE2L1	Q14494	Y526	SEEGAVGYSSDSETL	83 / 6 AA	85
Phosphosite 19:	ING3	Q9NXR8	Y275	MARETVGYSSSSALM	71 / 7 AA	47
Phosphosite 20:	ING3	Q9NXR8	S276	ARETVGYSSSSALMT	71 / 7 AA	47