Results 31 to 40 of about 150,558 (259)

The Trypanosoma cruzi vitamin C dependent peroxidase confers protection against oxidative stress but is not a determinant of virulence. [PDF]

open access: yes, 2015
BACKGROUND: The neglected parasitic infection Chagas disease is rapidly becoming a globalised public health issue due to migration. There are only two anti-parasitic drugs available to treat this disease, benznidazole and nifurtimox. Thus it is important
Fortes Francisco, A   +19 more
core   +2 more sources

Engineering Ascorbate Peroxidase Activity into Cytochrome c Peroxidase [PDF]

open access: yesBiochemistry, 2008
Cytochrome c peroxidase (CCP) and ascorbate peroxidase (APX) have very similar structures, and yet neither CCP nor APX exhibits each other's activities with respect to reducing substrates. APX has a unique substrate binding site near the heme propionates where ascorbate H-bonds with a surface Arg and one heme propionate (Sharp et al. (2003) Nat. Struct.
Yergalem T, Meharenna   +3 more
openaire   +2 more sources

Ascorbate deficient semi-dwarf asfL1 mutant of Lathyrus sativus exhibits alterations in antioxidant defense

open access: yesBiologia Plantarum, 2012
An ascorbate-deficient semi-dwarf mutant asfL-1 was detected in 250 Gy γ-ray treated grass pea (Lathyrus sativus L.) cv. BioR-231. The mutant contained only 42 % of leaf and 20 % of root ascorbate content of mother control (MC).
D. Talukdar
doaj   +1 more source

Inactivation Mechanism of Ascorbate Peroxidase at Low Concentrations of Ascorbate; Hydrogen Peroxide Decomposes Compound I of Ascorbate Peroxidase [PDF]

open access: yesPlant and Cell Physiology, 1996
One of the characteristic properties of ascorbate peroxidase (APX), which distinguishes it from guaiacol peroxidase, Cyt c peroxidase and glutathione peroxidase, is the rapid inactivation of the enzyme under conditions where an electron donor is absent. When thylakoid-bound APX (tAPX) in 100 f/M ascorbate was diluted 500-fold with an ascorbate-depleted
C. Miyake, K. Asada
openaire   +1 more source

SPECTROPHOTOMETRIC DETERMINATION OF ASCORBIC ACID BY HORSERADISH PEROXIDASE [PDF]

open access: yesThe University Thought - Publication in Natural Sciences, 2020
L-ascorbic acid is one of the essential nutrients and most common food supplements, fortificants, and preservatives. It is commercially available as solutions, drops, tablets, capsules, crystal powder, beverage mixtures, multivitamin formulations, and multi antioxidant formulations. The usual daily dose is from 25 mg to 1.5 g.
Vladan Đurić, Nebojša Deletić
openaire   +2 more sources

Interaction ammonium-nitrate: Response to oxidative stress in chicory plants [PDF]

open access: yes, 2010
The aim of this work was to study, as a function of the different availability of nitrogen in the reduced form, mineral and organic, the induction of the synthesis of some ROS-scavenging molecules and the evolution of some enzymatic activities such as ...
Adalgisa Belligno   +3 more
core   +1 more source

Molecular Characterization of Ascorbate Peroxidase in Photosynthetic Organisms [PDF]

open access: yes, 1996
[CONTENTS] CHAPTER I. Introduction, CHAPTER II. Molecular Characterization of Euglena Ascorbate Peroxidase Using Monoclonal Antibody, CHAPTER III.
イシカワ, タカヒロ   +1 more
core   +1 more source

Ascorbate Peroxidase from Soybean Root Nodules [PDF]

open access: yesPlant Physiology, 1993
AP is involved in the destruction of harmful H202. In soybean (Glycine max [L] Merr.) root nodules, AP initiates a sequence of coupled redox reactions (ascorbate-GSH pathway) that results in peroxide scavenging (Dalton et al., 1986). The ascorbate-GSH pathway occurs in other plant tissues and has been extensively studied in chloroplasts where ...
M, Chatfield, D A, Dalton
openaire   +2 more sources

Nitric oxide increases the enzymatic activity of three ascorbate peroxidase isoforms in soybean root nodules

open access: yes, 2011
Ascorbate peroxidase is one of the major enzymes regulating the levels of H2O2 in plants and plays a crucial role in maintaining root nodule redox status.
Keyster M.   +4 more
core   +1 more source

Enhanced seed production under prolonged heat stress conditions in Arabidopsis thaliana plants deficient in cytosolic ascorbate peroxidase 2 [PDF]

open access: yes, 2012
Article discussing enhanced seed production under prolonged heat stress conditions in Arabidopsis thaliana plants deficient in cytosolic ascorbate peroxidase ...
Ron Mittler   +9 more
core   +1 more source

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