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ENZYME entry: EC

Accepted Name
Caldopentamine synthase.
Alternative Name(s)
Long-chain polyamine synthase.
Reaction catalysed
S-adenosyl 3-(methylthio)propylamine + norspermine <=> S-methyl-5'-thioadenosine + caldopentamine
  • The enzyme, characterized from the thermophilic archaeon Hyperthermus butylicus, can also synthesize norspermine from norspermidine and thermospermine from spermidine (with lower activity).
  • The long-chain polyamines stabilize double-stranded DNA at high temperatures.
  • In contrast to EC and EC, this enzyme shows no activity with propane-1,3-diamine.
PRIAM enzyme-specific profiles2.5.1.127
KEGG Ligand Database for Enzyme Nomenclature2.5.1.127
IUBMB Enzyme Nomenclature2.5.1.127
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