Oxidation of L-Ascorbic Acid in the Presence of the Copper-Binding Compound from Methanotrophic Bacteria <i>Methylococcus capsulatus</i> (M)
The oxidation of ascorbic acid by air oxygen and hydrogen peroxide in the presence of the copper-binding compound (cbc) from bacteria <i>Methylococcus capsulatus</i> (M) was studied. The rate constant of ascorbic acid oxidation by air oxygen in the presence of the copper complex with cbc...
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| Format: | Article |
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MDPI AG
2020-10-01
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| Series: | Biomimetics |
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| Online Access: | https://www.mdpi.com/2313-7673/5/4/48 |
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| author | Lidia V. Avdeeva Rudolf I. Gvozdev |
| author_facet | Lidia V. Avdeeva Rudolf I. Gvozdev |
| author_sort | Lidia V. Avdeeva |
| collection | DOAJ |
| description | The oxidation of ascorbic acid by air oxygen and hydrogen peroxide in the presence of the copper-binding compound (cbc) from bacteria <i>Methylococcus capsulatus</i> (M) was studied. The rate constant of ascorbic acid oxidation by air oxygen in the presence of the copper complex with cbc from <i>M. capsulatus</i> (M) was shown to be 1.5 times higher than that of the noncatalytic reaction. The rate constant of ascorbic acid oxidation by hydrogen peroxide in the presence of the copper complex with cbc from <i>M. capsulatus</i> (M) decreased by almost one-third compared to the reaction in the absence of the copper complex with cbc. It was assumed that cbc can be involved in a multilevel system of antioxidant protection and can protect a bacterial cell from oxidation stress. Thus, the cbc is mimetic ascorbate oxidase in the oxidation of ascorbic acid by molecular oxygen. |
| first_indexed | 2024-03-10T15:47:37Z |
| format | Article |
| id | doaj.art-2c279a4fe4644bbb9bb983d84bc135e1 |
| institution | Directory Open Access Journal |
| issn | 2313-7673 |
| language | English |
| last_indexed | 2024-03-10T15:47:37Z |
| publishDate | 2020-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Biomimetics |
| spelling | doaj.art-2c279a4fe4644bbb9bb983d84bc135e12023-11-20T16:20:04ZengMDPI AGBiomimetics2313-76732020-10-01544810.3390/biomimetics5040048Oxidation of L-Ascorbic Acid in the Presence of the Copper-Binding Compound from Methanotrophic Bacteria <i>Methylococcus capsulatus</i> (M)Lidia V. Avdeeva0Rudolf I. Gvozdev1Institute of Problems of Chemical Physics of RAS, Academician Semenov Ave. 1, Chernogolovka 142432, Moscow Region, RussiaInstitute of Problems of Chemical Physics of RAS, Academician Semenov Ave. 1, Chernogolovka 142432, Moscow Region, RussiaThe oxidation of ascorbic acid by air oxygen and hydrogen peroxide in the presence of the copper-binding compound (cbc) from bacteria <i>Methylococcus capsulatus</i> (M) was studied. The rate constant of ascorbic acid oxidation by air oxygen in the presence of the copper complex with cbc from <i>M. capsulatus</i> (M) was shown to be 1.5 times higher than that of the noncatalytic reaction. The rate constant of ascorbic acid oxidation by hydrogen peroxide in the presence of the copper complex with cbc from <i>M. capsulatus</i> (M) decreased by almost one-third compared to the reaction in the absence of the copper complex with cbc. It was assumed that cbc can be involved in a multilevel system of antioxidant protection and can protect a bacterial cell from oxidation stress. Thus, the cbc is mimetic ascorbate oxidase in the oxidation of ascorbic acid by molecular oxygen.https://www.mdpi.com/2313-7673/5/4/48antioxidantchalkophoresmethanotrophsL-ascorbic acidmimetic oxidation |
| spellingShingle | Lidia V. Avdeeva Rudolf I. Gvozdev Oxidation of L-Ascorbic Acid in the Presence of the Copper-Binding Compound from Methanotrophic Bacteria <i>Methylococcus capsulatus</i> (M) Biomimetics antioxidant chalkophores methanotrophs L-ascorbic acid mimetic oxidation |
| title | Oxidation of L-Ascorbic Acid in the Presence of the Copper-Binding Compound from Methanotrophic Bacteria <i>Methylococcus capsulatus</i> (M) |
| title_full | Oxidation of L-Ascorbic Acid in the Presence of the Copper-Binding Compound from Methanotrophic Bacteria <i>Methylococcus capsulatus</i> (M) |
| title_fullStr | Oxidation of L-Ascorbic Acid in the Presence of the Copper-Binding Compound from Methanotrophic Bacteria <i>Methylococcus capsulatus</i> (M) |
| title_full_unstemmed | Oxidation of L-Ascorbic Acid in the Presence of the Copper-Binding Compound from Methanotrophic Bacteria <i>Methylococcus capsulatus</i> (M) |
| title_short | Oxidation of L-Ascorbic Acid in the Presence of the Copper-Binding Compound from Methanotrophic Bacteria <i>Methylococcus capsulatus</i> (M) |
| title_sort | oxidation of l ascorbic acid in the presence of the copper binding compound from methanotrophic bacteria i methylococcus capsulatus i m |
| topic | antioxidant chalkophores methanotrophs L-ascorbic acid mimetic oxidation |
| url | https://www.mdpi.com/2313-7673/5/4/48 |
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