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Redox-activated Expression of the Cytosolic Copper/zinc Superoxide Dismutase Gene in Nicotiana

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Specialty Science
Date 1993 Apr 1
PMID 8464930
Citations 47
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Abstract

Superoxide dismutases (SODs; superoxide: superoxide oxidoreductase, EC 1.15.1.1) play a key role in protection against oxygen radicals, and SOD gene expression is highly induced during environmental stress. To determine the conditions of SOD induction, the promoter of the cytosolic copper/zinc SOD (Cu/ZnSODcyt) gene was isolated in Nicotiana plumbaginifolia and fused to the beta-glucuronidase reporter gene. Oxidative stress is likely to alter the cellular redox in favor of the oxidized status. Surprisingly, the expression of the Cu/ZnSODcyt gene is induced by sulfhydryl antioxidants such as reduced glutathione, cysteine, and dithiothreitol, whereas the oxidized forms of glutathione and cysteine have no effect. It is therefore possible that reduced glutathione directly acts as an antioxidant and simultaneously activates the Cu/ZnSODcyt gene during oxidative stress.

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References
1.
Staal F, Roederer M, Herzenberg L . Intracellular thiols regulate activation of nuclear factor kappa B and transcription of human immunodeficiency virus. Proc Natl Acad Sci U S A. 1990; 87(24):9943-7. PMC: 55290. DOI: 10.1073/pnas.87.24.9943. View

2.
Sakamoto A, Okumura T, Ohsuga H, Tanaka K . Genomic structure of the gene for copper/zinc-superoxide dismutase in rice. FEBS Lett. 1992; 301(2):185-9. DOI: 10.1016/0014-5793(92)81244-g. View

3.
Madamanchi N, Alscher R . Metabolic bases for differences in sensitivity of two pea cultivars to sulfur dioxide. Plant Physiol. 1991; 97(1):88-93. PMC: 1080967. DOI: 10.1104/pp.97.1.88. View

4.
Griffith O, Meister A . Potent and specific inhibition of glutathione synthesis by buthionine sulfoximine (S-n-butyl homocysteine sulfoximine). J Biol Chem. 1979; 254(16):7558-60. View

5.
Demple B . Regulation of bacterial oxidative stress genes. Annu Rev Genet. 1991; 25:315-37. DOI: 10.1146/annurev.ge.25.120191.001531. View