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Reactive oxygen species, antioxidant systems and nitric oxide in peroxisomes.
J Exp Bot. 2002 May; 53(372):1255-72.JE

Abstract

Peroxisomes are subcellular organelles with an essentially oxidative type of metabolism. Like chloroplasts and mitochondria, plant peroxisomes also produce superoxide radicals (O2*(-)) and there are, at least, two sites of superoxide generation: one in the organelle matrix, the generating system being xanthine oxidase, and another site in the peroxisomal membranes dependent on NAD(P)H. In peroxisomal membranes, three integral polypeptides (PMPs) with molecular masses of 18, 29 and 32 kDa have been shown to generate radicals O2*(-). Besides catalase, several antioxidative systems have been demonstrated in plant peroxisomes, including different superoxide dismutases, the ascorbate-glutathione cycle, and three NADP-dependent dehydrogenases. A CuZn-SOD and two Mn-SODs have been purified and characterized from different types of peroxisomes. The four enzymes of the ascorbate-glutathione cycle (ascorbate peroxidase, monodehydroascorbate reductase, dehydroascorbate reductase, and glutathione reductase) as well as the antioxidants glutathione and ascorbate have been found in plant peroxisomes. The recycling of NADPH from NADP(+) can be carried out in peroxisomes by three dehydrogenases: glucose-6-phosphate dehydrogenase, 6-phosphogluconate dehydrogenase, and isocitrate dehydrogenase. In the last decade, different experimental evidence has suggested the existence of cellular functions for peroxisomes related to reactive oxygen species (ROS), but the recent demonstration of the presence of nitric oxide synthase (NOS) in plant peroxisomes implies that these organelles could also have a function in plant cells as a source of signal molecules like nitric oxide (NO*), superoxide radicals, hydrogen peroxide, and possibly S-nitrosoglutathione (GSNO).

Authors+Show Affiliations

Departamento de Bioquímica, Biología Celular y Molecular de Plantas, Estación Experimental del Zaidín, CSIC, Apartado 419, E-18080 Granada, Spain. ladelrio@eez.csic.esNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

11997374

Citation

del Río, Luis A., et al. "Reactive Oxygen Species, Antioxidant Systems and Nitric Oxide in Peroxisomes." Journal of Experimental Botany, vol. 53, no. 372, 2002, pp. 1255-72.
del Río LA, Corpas FJ, Sandalio LM, et al. Reactive oxygen species, antioxidant systems and nitric oxide in peroxisomes. J Exp Bot. 2002;53(372):1255-72.
del Río, L. A., Corpas, F. J., Sandalio, L. M., Palma, J. M., Gómez, M., & Barroso, J. B. (2002). Reactive oxygen species, antioxidant systems and nitric oxide in peroxisomes. Journal of Experimental Botany, 53(372), 1255-72.
del Río LA, et al. Reactive Oxygen Species, Antioxidant Systems and Nitric Oxide in Peroxisomes. J Exp Bot. 2002;53(372):1255-72. PubMed PMID: 11997374.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Reactive oxygen species, antioxidant systems and nitric oxide in peroxisomes. AU - del Río,Luis A, AU - Corpas,F Javier, AU - Sandalio,Luisa M, AU - Palma,José M, AU - Gómez,Manuel, AU - Barroso,Juan B, PY - 2002/5/9/pubmed PY - 2002/7/20/medline PY - 2002/5/9/entrez SP - 1255 EP - 72 JF - Journal of experimental botany JO - J Exp Bot VL - 53 IS - 372 N2 - Peroxisomes are subcellular organelles with an essentially oxidative type of metabolism. Like chloroplasts and mitochondria, plant peroxisomes also produce superoxide radicals (O2*(-)) and there are, at least, two sites of superoxide generation: one in the organelle matrix, the generating system being xanthine oxidase, and another site in the peroxisomal membranes dependent on NAD(P)H. In peroxisomal membranes, three integral polypeptides (PMPs) with molecular masses of 18, 29 and 32 kDa have been shown to generate radicals O2*(-). Besides catalase, several antioxidative systems have been demonstrated in plant peroxisomes, including different superoxide dismutases, the ascorbate-glutathione cycle, and three NADP-dependent dehydrogenases. A CuZn-SOD and two Mn-SODs have been purified and characterized from different types of peroxisomes. The four enzymes of the ascorbate-glutathione cycle (ascorbate peroxidase, monodehydroascorbate reductase, dehydroascorbate reductase, and glutathione reductase) as well as the antioxidants glutathione and ascorbate have been found in plant peroxisomes. The recycling of NADPH from NADP(+) can be carried out in peroxisomes by three dehydrogenases: glucose-6-phosphate dehydrogenase, 6-phosphogluconate dehydrogenase, and isocitrate dehydrogenase. In the last decade, different experimental evidence has suggested the existence of cellular functions for peroxisomes related to reactive oxygen species (ROS), but the recent demonstration of the presence of nitric oxide synthase (NOS) in plant peroxisomes implies that these organelles could also have a function in plant cells as a source of signal molecules like nitric oxide (NO*), superoxide radicals, hydrogen peroxide, and possibly S-nitrosoglutathione (GSNO). SN - 0022-0957 UR - https://www.unboundmedicine.com/medline/citation/11997374/Reactive_oxygen_species_antioxidant_systems_and_nitric_oxide_in_peroxisomes_ L2 - http://ovidsp.ovid.com/ovidweb.cgi?T=JS&PAGE=linkout&SEARCH=11997374.ui DB - PRIME DP - Unbound Medicine ER -