Ornithine decarboxylase is an enzyme that in humans is encoded by the ODC1gene.
This gene encodes the rate-limiting enzyme of the polyamine biosynthesis pathway which catalyzes ornithine to putrescine. The activity level for the enzyme varies in response to growth-promoting stimuli and exhibits a high turnover rate in comparison to other mammalian proteins. Originally localized to both chromosomes 2 and 7, the gene encoding this enzyme has been determined to be located on 2p25, with a pseudogene located on 7q31-qter.[1]
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Wright PS, Cooper JR, Cross-Doersen DE, et al. (1996). "Regulation of ornithine decarboxylase mRNA levels in human breast cancer cells: pattern of expression and involvement of core enhancer promoter element". Cell Growth Differ. 6 (9): 1097–102. PMID8519686.