You can find more information about spermidine synthase using the following links:

PFID PFID Old Formal Annotation PlasmoDB TDR Targets Subcellular Localization Affecting Drugs
Drug Name PubMed Articles (year of publication)
PF3D7_1129000 PF11_0301 spermidine synthase PlasmoDB TDR
(S-adenosyl-3-thio- 1,8-diaminooctane
1,7-diaminoheptane
1-aminoxy-3-aminopropane
4 mcha,(s, r)-dcadomet
4-[7-[(dimethylamino)methyl]-2-(4-fluorphenyl)imidazo[1,2-α]pyridine-3-yl]pyrimidin-2-amine
4-N-(3-aminopropyl)-transcyclohexane-1-amine
5-amino-1-pentene
Agmatine
Almazolone
Ape
Artemisinin
Crystal structure, suggested target
Cyclohexylamine
Dicyclohexylamine
N4-(3-aminopropyl)cyclohexane-1,4-diamine
S-adenosyl-1,8-diamino-3-thio-octane
Suggested target
Symmetric phthalimide possessing piperazine as linker unit
Trans-4-methylcyclohexylamine
trans-4-methylcyclohexylamine;
Expasy - NiceZime View
Brenda - The Comprehensive Enzyme Information System
Reaction Link