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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. Multiple alternatively spliced transcript variants encoding distinct isoforms have been identified. [provided by RefSeq, Dec 2013]
Enzymes ENZYME proteins Lyases Predicted intracellular proteins Plasma proteins FDA approved drug targets Small molecule drugs Protein evidence (Kim et al 2014) Protein evidence (Ezkurdia et al 2014)
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GO:0001822 [kidney development] GO:0003824 [catalytic activity] GO:0004586 [ornithine decarboxylase activity] GO:0005515 [protein binding] GO:0005575 [cellular_component] GO:0005737 [cytoplasm] GO:0005829 [cytosol] GO:0006521 [regulation of cellular amino acid metabolic process] GO:0006595 [polyamine metabolic process] GO:0008284 [positive regulation of cell proliferation] GO:0009446 [putrescine biosynthetic process] GO:0009615 [response to virus] GO:0033387 [putrescine biosynthetic process from ornithine] GO:0034641 [cellular nitrogen compound metabolic process] GO:0042176 [regulation of protein catabolic process] GO:0042803 [protein homodimerization activity] GO:0044281 [small molecule metabolic process] GO:0048471 [perinuclear region of cytoplasm]
Enzymes ENZYME proteins Lyases Predicted intracellular proteins Plasma proteins FDA approved drug targets Small molecule drugs Protein evidence (Ezkurdia et al 2014)
Show all
GO:0003824 [catalytic activity] GO:0004586 [ornithine decarboxylase activity] GO:0005515 [protein binding] GO:0005575 [cellular_component] GO:0005737 [cytoplasm] GO:0005829 [cytosol] GO:0006521 [regulation of cellular amino acid metabolic process] GO:0006595 [polyamine metabolic process] GO:0009615 [response to virus] GO:0033387 [putrescine biosynthetic process from ornithine] GO:0034641 [cellular nitrogen compound metabolic process] GO:0042176 [regulation of protein catabolic process] GO:0042803 [protein homodimerization activity] GO:0044281 [small molecule metabolic process]