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. Lycorine: a powerful inhibitor of l‐galactono‐γ‐lactone dehydrogenase activity . The Journal of Plant Physiology 159, 362 –364. Asada K. 1992 . Ascorbate peroxidase : a hydrogen peroxide‐scavenging enzyme ...
stress, whereas a substitution mutation at Cys-32 causes the reduction of ascorbate peroxidase activity and abolishes its responsiveness to the NO-enhanced enzymatic activity . Moreover, S-nitrosylation ...
still in the beginning of the 1990s only crude extracts of cyanobacteria were tested for peroxide-degrading enzymes. Catalase activity (Tel-Or et al., 1985), ascorbate peroxidase activity (Miyake et al ...
revealed the absence of a canonical ascorbate peroxidase in the cyanobacterial genomes, although it seems to be one of the most crucial peroxidases in plant chloroplasts (Asada 2000). The unicellular ...
proteins were expressed heterologously in Escherichia coli. In an in vitro test system, they all showed peroxidase activity , but could be distinguished by their ability to accept dithiothreitol ...
Abstract Ascorbic acid (AsA) is present at high levels in plants and is a potent antioxidant and cellular reductant. The major plant AsA biosynthetic pathway is through the intermediates d-mannose ...
, glutathione peroxidases and ascorbate peroxidases , which play a major role in decomposing H2O2 in animals and plants, respectively, are not widespread in cyanobacteria (Tel-Or et al., 1985), but catalases ...
environment activates the Cys‐residue. It was shown for the tryparedoxin peroxidase of Crithidia fasciculata that a Trp‐ and an Arg‐residues are of critical importance for maintenance of the peroxiredoxin ...
to be sufficiently active to detoxify H 2 O 2 originating from the Mehler reaction (water/water cycle). In addition to detoxification of reactive oxygen species, the water/water cycle via ascorbate peroxidase serves ...
-tocopherol (vitamin E). Ascorbate is a cofactor of thylakoid-bound and stromal ascorbate peroxidases that detoxify hydrogen peroxide (H2O2) produced by superoxide dismutases (SODs). Ascorbate in the lumen ...
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