ID   2.5.1.127
DE   caldopentamine synthase.
AN   long-chain polyamine synthase.
CA   norspermine + S-adenosyl 3-(methylsulfanyl)propylamine = caldopentamine +
CA   2 H(+) + S-methyl-5'-thioadenosine.
CC   -!- The enzyme, characterized from the thermophilic archaeon Hyperthermus
CC       butylicus, can also synthesize norspermine from norspermidine and
CC       thermospermine from spermidine (with lower activity).
CC   -!- The long-chain polyamines stabilize double-stranded DNA at high
CC       temperatures.
CC   -!- In contrast to EC 2.5.1.23 and EC 2.5.1.126, this enzyme shows no
CC       activity with propane-1,3-diamine.
DR   A2BIX4, SPEE1_HYPBU;
//