| UPA00248 | 
                    spermidine biosynthesis~Biosynthesis of spermidine by the addition of a propylamine moiety to putrescine. | 
                    None - {{∅}} | 
                    None - {{∅}} | 
                    Unexplained | 
                     | 
                
                
                    | ULS00136 | 
                    spermidine from putrescine | 
                    None - {{∅}} | 
                    None - {{∅}} | 
                    Unexplained | 
                     | 
                
                
                    | UCR01920 | 
                    S-adenosylmethioninamine + putrescine = S-methyl-5'-thioadenosine + spermidine | 
                    None - {{∅}} | 
                    None - {{∅}} | 
                    Unexplained | 
                     | 
                
                
                    | UER00314 | 
                    spermidine from putrescine: step 1/1~1 S-adenosylmethioninamine + 1 putrescine => 1 S-methyl-5'-thioadenosine + 1 spermidine. | 
                    None - {{∅}} | 
                    None - {{∅}} | 
                    Unexplained | 
                     |