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Substance Name: Decarboxylase, orinithine
RN: 9024-60-6


  • A pyridoxal-phosphate protein, believed to be the rate-limiting compound in the biosynthesis of polyamines. It catalyzes the decarboxylation of ornithine to form putrescine, which is then linked to a propylamine moiety of decarboxylated S-adenosylmethionine to form spermidine.
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Names and Synonyms

MeSH Heading

  • Ornithine Decarboxylase


  • L-Orinithine decarboxylase
  • Ornithine decarboxylase

Systematic Name

  • Decarboxylase, orinithine

Registry Numbers

CAS Registry Number

  • 9024-60-6

System Generated Number

  • 0009024606