Regulated Degradation of Yeast Ornithine Decarboxylase
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چکیده
منابع مشابه
Rapid and regulated degradation of ornithine decarboxylase.
Ornithine decarboxylase (ODC; EC 4.1.1.17), the first and key enzyme in polyamine biosynthesis (Figure 1), turns over extremely rapidly and is one of the most highly regulated enzymes known [1-3]. It is induced by many kinds of growth stimuli, and its suppression by specific inhibitors or mutation inhibits cellular growth and transformation [4,5]. A recent study showed that overexpression of OD...
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Ornithine decarboxylase (ODC), a key enzyme in the biosynthesis of polyamines, is a very labile protein. ODC is a homodimeric enzyme that undergoes ubiquitin-independent proteasomal degradation via direct interaction with antizyme, a polyamine-induced protein. Binding of antizyme promotes the dissociation of ODC homodimers and marks ODC for degradation by the 26S proteasomes. We describe here a...
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Feedback inhibition is a common mechanism to adjust the activity of an enzyme in accordance with the abundance of a product. The enzyme catalyzing the initial, committing step of a biosynthesis cascade is subject to negative feedback by the end-product. This kind of regulation is frequent in all cell types to regulate biosynthesis of numerous metabolites; a classical textbook example is the ser...
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Ornithine decarboxylase, the first enzyme of the polyamine biosynthetic pathway, is induced by androgens in the mouse kidney. We have isolated from a kidney cDNA clone bank two plasmids, pODC1440 and pODC934 , that contain different cDNA inserts corresponding to ornithine decarboxylase mRNA. Identification was based upon the ability of plasmid-specific mRNAs to encode a 53,000-dalton polypeptid...
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17 Melvin, M. A. L. and Keir, H. M. (1978) Expt. Cell Res. 111,231-236 18 Melvin, M. A. L. and Keir, H. M. (1979) Biochem. SOC. Trans. 7, 689-691 19 Wallace, H. M. and Keir, H. M. (1981) Biochim. Biophys. Acta 676,25-30 20 Melvin, M. A. L., Wallace, H. M. and Keir, H. M. (1980) Physiol. Chem. Phys. 12, 431-439 21 Coleman, C. S. and Wallace, H. M. (1990) 'Biochem. SOC. Trans. 18, 1228-1229 22 Wa...
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ژورنال
عنوان ژورنال: Journal of Biological Chemistry
سال: 1999
ISSN: 0021-9258
DOI: 10.1074/jbc.274.36.25921