(redirected from Peroxidases)
Also found in: Thesaurus, Medical, Encyclopedia.
Related to Peroxidases: catalase, peroxidase reaction


 (pə-rŏk′sĭ-dās′, -dāz′)
Any of a group of enzymes that occur especially in plant cells and catalyze the oxidation of a substance by a peroxide.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(pəˈrɒksɪˌdeɪs; -ˌdeɪz)
(Biochemistry) any of a group of enzymes that catalyse the oxidation of a compound by the decomposition of hydrogen peroxide or an organic peroxide. They generally consist of a protein combined with haem
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(pəˈrɒk sɪˌdeɪs, -ˌdeɪz)

any of a class of enzymes that catalyze the oxidation of a compound by the decomposition of peroxide.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.peroxidase - any of a group of enzymes (occurring especially in plant cells) that catalyze the oxidation of a compound by a peroxide
plant life, flora, plant - (botany) a living organism lacking the power of locomotion
glutathione peroxidase - an enzyme in the body that is a powerful scavenger of free radicals
horseradish peroxidase - an enzyme used in immunohistochemistry to label antigens and their antibodies
oxidase - any of the enzymes that catalyze biological oxidation
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
References in periodicals archive ?
After de-parafinization and rehydration, sections were soaked in 3% hydrogen peroxide in dd-[H.sub.2]O for 20 min to neutralize endogenous peroxidases. Sections subjected to antigen retrieval using 0.01 mM citrate buffer and blocked using 5% BSA for 30 min, were incubated with anti-GPx5 (IgG) antibody (1:250) in 5% BSA overnight at 4[degrees]C followed by 4 washes using PBS (5 minutes each), then incubated with HRP-conjugated goat anti-rabbit IgG for 1 h at room temperature.
Polyphenol oxidase and peroxidases in fruits and vegetables.
Peroxidases are widely distributed in the living organisms (Boeuf et al., 2000).
Expression of all three heme peroxidases (Mpo, Epx, and Lpo) together with peroxidase activities in BALFs was enhanced in allergen-challenged mice.
Vazquez-Duhalt, "Antioxidant capacity of poly(ethylene glycol) (PEG) as protection mechanism against hydrogen peroxide inactivation of peroxidases," Applied Biochemistry and Biotechnology, vol.
Biochemical Comparison between Tg-Hbs and the Representative Peroxidases. The predicted biochemical characteristics of the three types of subunit (Tg-Hbi that forms the dimer Tg-HbI and Tg-Hbii[alpha] and Tg-Hbii[beta] that form the tetramer Tg-HbII) were compared with those of horse radish peroxidase (HRP), a representative of plant peroxidase, and myeloperoxidase (MPO), a representative peroxidase of vertebrates.
David and Murray method [6] was followed for estimation of peroxidases. Already weighed and frozen leaves of treated plants were crushed.
Possible functions of extracellular peroxidases in stress-induced generation and detoxification of active oxygen species.
Peroxidases are intracellular enzymes which catalyze the peroxidase dependent oxidation of variety of organic and inorganic substances.
Muitas vezes, as respostas dos vegetais a deficiencia hidrica incluem alteracoes bioquimicas em nivel celular, como exemplo as peroxidases, mudancas nas proporcoes de aminoacidos e aumentos frequentes na concentracao de prolina sao ocasionados por disturbios no metabolismo das proteinase, possivelmente para manutencao do potencial hidrico da folha, que aumenta o teor deste aminoacido, para ajuste osmotico e defesa da planta a desidratacao.
Antioxidant enzymes, including a wide group of peroxidases, take part in detoxification of active oxygen.
From a practical point of view the use of peroxidases in vitro for this purpose may represent a more feasible system.