Ornithine decarboxylase antizyme is an enzyme that in humans is encoded by the OAZ1gene.[1][2][3]
Ornithine decarboxylase catalyzes the conversion of ornithine to putrescine in the first and apparently rate-limiting step in polyamine biosynthesis. The ornithine decarboxylase antizymes play a role in the regulation of polyamine synthesis by binding to and inhibiting ornithine decarboxylase. Antizyme expression is auto-regulated by polyamine-enhanced translational frameshifting. The antizyme encoded by this gene inhibits ornithine decarboxylase and accelerates its degradation.[3]
References
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↑Matsufuji S, Inazawa J, Hayashi T, Miyazaki Y, Ichiba T, Furusaka A, Matsufuji T, Atkins JF, Gesteland RF, Murakami Y, Hayashi S (Mar 1997). "Assignment of the human antizyme gene (OAZ) to chromosome 19p13.3 by fluorescence in situ hybridization". Genomics. 38 (1): 102–104. doi:10.1006/geno.1996.0601. PMID8954789.
Savage RE, Nofzinger K, Bedell C, et al. (1989). "Chloroform-induced multiple forms of ornithine decarboxylase: differential sensitivity of forms to enhancement by diethyl maleate and inhibition by ODC-antizyme". Journal of toxicology and environmental health. 27 (1): 57–64. doi:10.1080/15287398909531278. PMID2724368.
Matsufuji S, Matsufuji T, Miyazaki Y, et al. (1995). "Autoregulatory frameshifting in decoding mammalian ornithine decarboxylase antizyme". Cell. 80 (1): 51–60. doi:10.1016/0092-8674(95)90450-6. PMID7813017.
Mamroud-Kidron E, Omer-Itsicovich M, Bercovich Z, et al. (1995). "A unified pathway for the degradation of ornithine decarboxylase in reticulocyte lysate requires interaction with the polyamine-induced protein, ornithine decarboxylase antizyme". Eur. J. Biochem. 226 (2): 547–554. doi:10.1111/j.1432-1033.1994.tb20079.x. PMID8001569.
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Zhu C, Lang DW, Coffino P (1999). "Antizyme2 is a negative regulator of ornithine decarboxylase and polyamine transport". J. Biol. Chem. 274 (37): 26425–26430. doi:10.1074/jbc.274.37.26425. PMID10473601.
Chen H, MacDonald A, Coffino P (2003). "Structural elements of antizymes 1 and 2 are required for proteasomal degradation of ornithine decarboxylase". J. Biol. Chem. 277 (48): 45957–45961. doi:10.1074/jbc.M206799200. PMID12359729.
Ike A, Yamada S, Tanaka H, et al. (2003). "Structure and promoter activity of the gene encoding ornithine decarboxylase antizyme expressed exclusively in haploid germ cells in testis (OAZt/Oaz3)". Gene. 298 (2): 183–193. doi:10.1016/S0378-1119(02)00978-2. PMID12426106.
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Choi KS, Suh YH, Kim WH, et al. (2005). "Stable siRNA-mediated silencing of antizyme inhibitor: regulation of ornithine decarboxylase activity". Biochem. Biophys. Res. Commun. 328 (1): 206–212. doi:10.1016/j.bbrc.2004.11.172. PMID15670771.
Ku M, Howard S, Ni W, et al. (2006). "OAZ regulates bone morphogenetic protein signaling through Smad6 activation". J. Biol. Chem. 281 (8): 5277–5287. doi:10.1074/jbc.M510004200. PMID16373339.
Lim J, Hao T, Shaw C, et al. (2006). "A protein-protein interaction network for human inherited ataxias and disorders of Purkinje cell degeneration". Cell. 125 (4): 801–814. doi:10.1016/j.cell.2006.03.032. PMID16713569.
Tsuji T, Katsurano M, Ibaragi S, et al. (2007). "Ornithine decarboxylase antizyme upregulates DNA-dependent protein kinase and enhances the nonhomologous end-joining repair of DNA double-strand breaks in human oral cancer cells". Biochemistry. 46 (31): 8920–8932. doi:10.1021/bi7000328. PMID17630775.