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OtherCellular and Structural Biology
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Superoxide Free Radicals Are Produced in Glyoxysomes

Luisa M. Sandalio, Victor M. Fernández, Francisco L. Rupérez, Luis A. Del Río
Luisa M. Sandalio
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Victor M. Fernández
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Francisco L. Rupérez
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Luis A. Del Río
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Published May 1988. DOI: https://doi.org/10.1104/pp.87.1.1

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Abstract

The production of superoxide free radicals in pellet and supernatant fractions of glyoxysomes, specialized plant peroxisomes from watermelon (Citrullus vulgaris Schrad.) cotyledons, was investigated. Upon inhibition of the endogenous superoxide dismutase, xanthine, and hypoxanthine induced in glyoxysomal supernatants the generation of O2− radicals and this was inhibited by allopurinol. In glyoxysomal pellets, NADH stimulated the generation of superoxide radicals. Superoxide production by purines was due to xanthine oxidase, which was found predominantly in the matrix of glyoxysomes. The generation of O2− radicals in glyoxysomes by endogenous metabolites suggests new active oxygen-related roles for glyoxysomes, and for peroxisomes in general, in cellular metabolism.

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Superoxide Free Radicals Are Produced in Glyoxysomes
Luisa M. Sandalio, Victor M. Fernández, Francisco L. Rupérez, Luis A. Del Río
Plant Physiology May 1988, 87 (1) 1-4; DOI: 10.1104/pp.87.1.1

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Superoxide Free Radicals Are Produced in Glyoxysomes
Luisa M. Sandalio, Victor M. Fernández, Francisco L. Rupérez, Luis A. Del Río
Plant Physiology May 1988, 87 (1) 1-4; DOI: 10.1104/pp.87.1.1
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Plant Physiology
Vol. 87, Issue 1
May 1988
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  • The Isolation of Actin from Pea Roots by DNase I Affinity Chromatography
  • Fourier Transform Infrared Microspectroscopy Is a New Way to Look at Plant Cell Walls
  • Flow Cytometry of Spinach Chloroplasts
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