Ascorbate Peroxidase Neofunctionalization at the Origin of APX-R and APX-L: Evidence from Basal Archaeplastida [PDF]
Antioxidants, 2021 Ascorbate peroxidases (APX) are class I members of the Peroxidase-Catalase superfamily, a large group of evolutionarily related but rather divergent enzymes.
Marcia Margis-Pinheiro +2 more
exaly +7 more sources
Catalase and Ascorbate Peroxidase in Euglenozoan Protists [PDF]
Pathogens, 2020 In this work, we studied the biochemical properties and evolutionary histories of catalase (CAT) and ascorbate peroxidase (APX), two central enzymes of reactive oxygen species detoxification, across the highly diverse clade Eugenozoa.
Ingrid Škodová-Sveráková +5 more
doaj +6 more sources
Measurement of Ascorbate Peroxidase Activity in Sorghum
Bio-Protocol, 2022 The ascorbate peroxidase (APX) is a widely distributed antioxidant enzyme. It differs from catalase and other peroxidases in that it scavenges/reduces reactive oxygen species (ROS) such as hydrogen peroxide (H2O2) to water using reduced ascorbate as the ...
Praveen Kumar
doaj +4 more sources
Ascorbate Peroxidase 2 (APX2) of Chlamydomonas Binds Copper and Modulates the Copper Insertion into Plastocyanin [PDF]
Antioxidants, 2023 Recent phylogenetic studies have unveiled a novel class of ascorbate peroxidases called “ascorbate peroxidase-related” (APX-R). These enzymes, found in green photosynthetic eukaryotes, lack the amino acids necessary for ascorbate binding.
Anna Caccamo +9 more
doaj +4 more sources
Arabidopsis APx-R Is a Plastidial Ascorbate-Independent Peroxidase Regulated by Photomorphogenesis [PDF]
Antioxidants, 2021 Peroxidases are enzymes that catalyze the reduction of hydrogen peroxide, thus minimizing cell injury and modulating signaling pathways as response to this reactive oxygen species.
Marcia Margis-Pinheiro +2 more
exaly +5 more sources
Genome-wide, evolutionary, and functional analyses of ascorbate peroxidase (APX) family in Poaceae species [PDF]
Genetics and Molecular Biology, 2022 Ascorbate peroxidases (APXs) are heme peroxidases involved in the control of hydrogen peroxide levels and signal transduction pathways related to development and stress responses.
Douglas Jardim-Messeder +10 more
doaj +2 more sources
The redox properties of ascorbate peroxidase
Biochemistry, 2007 Reduction potentials for the catalytic compound I/compound II and compound II/Fe3+ redox couples, and for the two-electron compound I/Fe 3+ redox couple, have been determined for ascorbate peroxidase (APX) and for a number of site-directed variants.
Efimov, Igor +7 more
core +5 more sources
Plant ascorbate peroxidase: molecular phylogeny and role in oxidative stress
Studia Universitatis Babeș-Bolyai. Biologia, 2018 Oxidative stress appears as a condition in accumulation and detoxification of reactive oxygen species (ROS). ROS are oxygen-derived free radicals, generated predominantly in mitochondria, peroxisomes and chloroplasts, as natural byproducts of the normal
Imola FÁBIÁN +3 more
doaj +2 more sources
Biochimica et Biophysica Acta (BBA) - General Subjects, 2007 We report here that the Leishmania major ascorbate peroxidase (LmAPX), having similarity with plant ascorbate peroxidase, catalyzes the oxidation of suboptimal concentration of ascorbate to monodehydroascorbate (MDA) at physiological pH in the presence ...
Subrata Adak +9 more
core +3 more sources
Abolishing activity against ascorbate in a cytosolic ascorbate peroxidase from switchgrass [PDF]
Phytochemistry, 2013 Switchgrass (Panicum virgatum L.) is being developed as a bioenergy species. Recently an early version of its genome has been released permitting a route to the cloning and analysis of key proteins.
Woodworth, Kyle +4 more
core +4 more sources