Spermine Biosynthesis

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© IUBMB 2003


Note 1: All compounds are shown protonated as expected under physiological conditions.

Note 2: EC 2.5.1.23, sym-norspermidine synthase, acts similarly twice starting with propane-1,3-diamine.


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S-adenosyl-L-methionine biosynthesis
ornithine biosynthesis
EC 2.5.1.16 spermidine synthase
EC 2.5.1.22 spermine synthase
EC 4.1.1.17 ornithine decarboxylase
EC 4.1.1.50 adenosylmethionine decarboxylase