Enzymatic reactions [BR:br08201]
2. Transferase reactions
2.5 Transferring alkyl or aryl groups, other than methyl groups
2.5.1 Transferring alkyl or aryl groups, other than methyl groups (only sub-subclass identified to date)
2.5.1.23
R03271 S-Adenosylmethioninamine + 1,3-Diaminopropane <=> 5'-Methylthioadenosine + Norspermidine + H+
