IUBMB Enzyme Nomenclature


Accepted name: ornithine decarboxylase

Reaction: L-ornithine = putrescine + CO2

For diagram of reaction click here or click here.

Other name(s): SpeC; L-ornithine carboxy-lyase

Systematic name: L-ornithine carboxy-lyase (putrescine-forming)

Comments: A pyridoxal-phosphate protein.

Links to other databases: BRENDA, EXPASY, KEGG, Metacyc, PDB, CAS registry number: 9024-60-6


1. Ono, M., Inoue, H., Suzuki, F. and Takeda, Y. Studies on ornithine decarboxylase from the liver of thioacetamide-treated rats. Purification and some properties. Biochim. Biophys. Acta 284 (1972) 285-297. [PMID: 5073764]

2. Taylor, E.S. and Gale, E.F. Studies on bacterial amino-acid decarboxylases. 6. Codecarboxylase content and action of inhibitors. Biochem. J. 39 (1945) 52-58.

[EC created 1961]

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