Results 21 to 30 of about 36,503 (192)

Ascorbate is the natural substrate for plant peroxidases [PDF]

FEBS Letters, 1996
Ascorbate‐dependent detoxification of hydrogen peroxide by guaiacol‐type peroxidases is increased considerably in the presence of 3,4‐dihydroxyphenolic compounds, suggesting that ascorbate is the natural substrate for many types of peroxidase in situ and not just the ascorbate‐specific peroxidases.
Mehlhorn, H., Lelandais, Maud, Korth, H.G., Foyer, C.H.   +3 more
openaire   +3 more sources

Triazine Probes Target Ascorbate Peroxidases in Plants [PDF]

Plant Physiology, 2019
Though they are rare in nature, anthropogenic 1,3,5-triazines have been used in herbicides as chemically stable scaffolds. Here, we show that small 1,3,5-triazines selectively target ascorbate peroxidases (APXs) in Arabidopsis (Arabidopsis thaliana), tomato (Solanum lycopersicum), rice (Oryza sativa), maize (Zea mays), liverwort (Marchantia polymorpha),
Kyoko Morimoto, Kyle S. Cole, Jiorgos Kourelis, Collin H. Witt, Daniel Brown, Daniel Krahn, Monika Stegmann, Farnusch Kaschani, Markus Kaiser, Jonathan Burton, Shabaz Mohammed, Kazuko Yamaguchi-Shinozaki, Eranthie Weerapana, Renier A.L. van der Hoorn   +13 more
openaire   +4 more sources

Engineering Ascorbate Peroxidase Activity into Cytochrome c Peroxidase [PDF]

Biochemistry, 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, Patricia, Oertel, B, Bhaskar, Thomas L, Poulos   +3 more
openaire   +2 more sources

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

, 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, Martin C Taylor, John M Kelly, Michael D Lewis, Shane R. Wilkinson (721807), Fortes Francisco, Amanda, Amanda Fortes Francisco (330407), Taylor, Martin C, Lewis, MD, Amanda Fortes Francisco, Wilkinson, SR, Michael D. Lewis (172100), Taylor, MC, Lewis, Michael D, Kelly, JM, Shane R Wilkinson, Wilkinson, Shane R, Kelly, John M, Martin C. Taylor (449215), John M. Kelly (488103)   +19 more
core   +1 more source

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

Plant 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]

The 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

Ascorbate metabolism in vegetative and reproductive organs of "cherry" tomato

Horticultural Science, 2014
Ascorbate metabolism is an essential procedure for all plant cells that plays important roles in several physiological processes such as plant development and reactive oxygen species detoxification.
G. Tsaniklidis, N. Nikoloudakis, C. Delis, G. Aivalakis   +3 more
doaj   +1 more source

The Response of Salinity Stress-Induced A. tricolor to Growth, Anatomy, Physiology, Non-Enzymatic and Enzymatic Antioxidants

Frontiers in Plant Science, 2020
An investigation was carried out to elucidate growth, anatomical, physiological, and major ROS detoxification pathways involved in the tolerance of A. tricolor under salinity stress.
Umakanta Sarker, Shinya Oba
doaj   +1 more source

Drought Stress Responses of Sunflower Germplasm Developed after Wide Hybridization

Turkish Journal of Agriculture: Food Science and Technology, 2016
Response of sunflower germplasms viz. cultivated sunflower H. annuus and two breeding lines H. annuus x T. rotundifolia and H. annuus x V. encelioides developed after wide hybridization were used for identification of drought tolerant sunflower genotypes
Roumiana Dimova Vassilevska-Ivanova, Lydia Shtereva, Ira Stancheva, Maria Geneva   +3 more
doaj   +1 more source

The Antioxidants of Legume Nodule Mitochondria

Molecular Plant-Microbe Interactions, 2001
The mitochondria of legume root nodules are critical to sustain the energy-intensive process of nitrogen fixation. They also generate reactive oxygen species at high rates and thus require the protection of antioxidant enzymes and metabolites.
Iñaki Iturbe-Ormaetxe, Manuel A. Matamoros, Maria C. Rubio, David A. Dalton, Manuel Becana   +4 more
doaj   +1 more source