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:	S147
P-Site Sequence:	MAIGYSSSKLTLHVG
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	S147	MAIGYSSSKLTLHVG	100 / 9 AA	34
Phosphosite 1:	spermidine synthase	P19623	S145	PGMAIGYSSSKLTLH	100 / 7 AA	34
Phosphosite 2:	WASF4	Q8IV90	S112	PHRGYNSSKLHNRGI	85 / 7 AA	68
Phosphosite 3:	SPAST	Q9UBP0	S547	MTDGYSGSDLTALAK	75 / 8 AA	67
Phosphosite 4:	ZNF681	Q96N22	S450	GKAFYRSSKLTEHKK	85 / 7 AA	67
Phosphosite 5:	ZNF681	Q96N22	S449	CGKAFYRSSKLTEHK	85 / 7 AA	67
Phosphosite 6:	ANKRD34A	Q69YU3	S367	ERRRYSASPLTLPPA	75 / 8 AA	53
Phosphosite 7:	KIF3A	Q9Y496	S300	THVPYRNSKLTRLLQ	71 / 7 AA	80
Phosphosite 8:	TNRC18	O15417	S1754	PAQGPSSSKLTPSLL	87 / 8 AA	315
Phosphosite 9:	spermidine synthase	P19623	T150	GYSSSKLTLHVGDGF	100 / 6 AA	34
Phosphosite 10:	TNRC18	O15417	S1753	WPAQGPSSSKLTPSL	87 / 8 AA	315
Phosphosite 11:	CCDC21	Q6P2H3	S116	TPVGPSSSKLPLSGL	77 / 9 AA	86
Phosphosite 12:	DMBX1	Q8NFW5	S259	PSHSYSSSPLSLFRL	66 / 9 AA	41
Phosphosite 13:	KIFC1	Q9BW19	S618	SHVPYRNSKLTYLLQ	71 / 7 AA	74
Phosphosite 14:	PPP2R2B	Q00005	S243	NTFVYSSSKGTIRLC	75 / 8 AA	52
Phosphosite 15:	PPP2R2A	P63151	S247	NTFVYSSSKGTIRLC	75 / 8 AA	52
Phosphosite 16:	CHD9	Q3L8U1	S352	PQGNYSNSKLSPVHM	62 / 8 AA	326
Phosphosite 17:	CHD9	Q3L8U1	S350	SHPQGNYSNSKLSPV	83 / 6 AA	326
Phosphosite 18:	VPS13A	Q96RL7	S2353	FWPEYASSKLLIQVE	71 / 7 AA	360
Phosphosite 19:	ITLN1	Q8WWA0	Y297	GYGTHVGYSSSREIT	83 / 6 AA	35
Phosphosite 20:	WASF4	Q8IV90	Y109	LIFPHRGYNSSKLHN	83 / 6 AA	68