The Oxidized Protein Repair Enzymes Methionine Sulfoxide Reductases and Their Roles in Protecting against Oxidative Stress, in Ageing and in Regulating Protein Function
Cysteine and methionine residues are the amino acids most sensitive to oxidation by reactive oxygen species. However, in contrast to other amino acids, certain cysteine and methionine oxidation products can be reduced within proteins by dedicated enzymatic repair systems. Oxidation of cysteine first...
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| Format: | Article |
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MDPI AG
2018-12-01
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| Series: | Antioxidants |
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| Online Access: | https://www.mdpi.com/2076-3921/7/12/191 |
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| author | Sofia Lourenço dos Santos Isabelle Petropoulos Bertrand Friguet |
| author_facet | Sofia Lourenço dos Santos Isabelle Petropoulos Bertrand Friguet |
| author_sort | Sofia Lourenço dos Santos |
| collection | DOAJ |
| description | Cysteine and methionine residues are the amino acids most sensitive to oxidation by reactive oxygen species. However, in contrast to other amino acids, certain cysteine and methionine oxidation products can be reduced within proteins by dedicated enzymatic repair systems. Oxidation of cysteine first results in either the formation of a disulfide bridge or a sulfenic acid. Sulfenic acid can be converted to disulfide or sulfenamide or further oxidized to sulfinic acid. Disulfide can be easily reversed by different enzymatic systems such as the thioredoxin/thioredoxin reductase and the glutaredoxin/glutathione/glutathione reductase systems. Methionine side chains can also be oxidized by reactive oxygen species. Methionine oxidation, by the addition of an extra oxygen atom, leads to the generation of methionine sulfoxide. Enzymatically catalyzed reduction of methionine sulfoxide is achieved by either methionine sulfoxide reductase A or methionine sulfoxide reductase B, also referred as to the methionine sulfoxide reductases system. This oxidized protein repair system is further described in this review article in terms of its discovery and biologically relevant characteristics, and its important physiological roles in protecting against oxidative stress, in ageing and in regulating protein function. |
| first_indexed | 2024-03-12T08:25:13Z |
| format | Article |
| id | doaj.art-e83742288f0140b5949b0d2e80314d61 |
| institution | Directory Open Access Journal |
| issn | 2076-3921 |
| language | English |
| last_indexed | 2024-03-12T08:25:13Z |
| publishDate | 2018-12-01 |
| publisher | MDPI AG |
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| series | Antioxidants |
| spelling | doaj.art-e83742288f0140b5949b0d2e80314d612023-09-02T18:09:09ZengMDPI AGAntioxidants2076-39212018-12-0171219110.3390/antiox7120191antiox7120191The Oxidized Protein Repair Enzymes Methionine Sulfoxide Reductases and Their Roles in Protecting against Oxidative Stress, in Ageing and in Regulating Protein FunctionSofia Lourenço dos Santos0Isabelle Petropoulos1Bertrand Friguet2Sorbonne Université, CNRS, INSERM, Institut de Biologie Paris-Seine, Biological Adaptation and Ageing, B2A-IBPS, F-75005 Paris, FranceSorbonne Université, CNRS, INSERM, Institut de Biologie Paris-Seine, Biological Adaptation and Ageing, B2A-IBPS, F-75005 Paris, FranceSorbonne Université, CNRS, INSERM, Institut de Biologie Paris-Seine, Biological Adaptation and Ageing, B2A-IBPS, F-75005 Paris, FranceCysteine and methionine residues are the amino acids most sensitive to oxidation by reactive oxygen species. However, in contrast to other amino acids, certain cysteine and methionine oxidation products can be reduced within proteins by dedicated enzymatic repair systems. Oxidation of cysteine first results in either the formation of a disulfide bridge or a sulfenic acid. Sulfenic acid can be converted to disulfide or sulfenamide or further oxidized to sulfinic acid. Disulfide can be easily reversed by different enzymatic systems such as the thioredoxin/thioredoxin reductase and the glutaredoxin/glutathione/glutathione reductase systems. Methionine side chains can also be oxidized by reactive oxygen species. Methionine oxidation, by the addition of an extra oxygen atom, leads to the generation of methionine sulfoxide. Enzymatically catalyzed reduction of methionine sulfoxide is achieved by either methionine sulfoxide reductase A or methionine sulfoxide reductase B, also referred as to the methionine sulfoxide reductases system. This oxidized protein repair system is further described in this review article in terms of its discovery and biologically relevant characteristics, and its important physiological roles in protecting against oxidative stress, in ageing and in regulating protein function.https://www.mdpi.com/2076-3921/7/12/191protein oxidationmethionine oxidationmethionine sulfoxide reductasesoxidized protein repairageing |
| spellingShingle | Sofia Lourenço dos Santos Isabelle Petropoulos Bertrand Friguet The Oxidized Protein Repair Enzymes Methionine Sulfoxide Reductases and Their Roles in Protecting against Oxidative Stress, in Ageing and in Regulating Protein Function Antioxidants protein oxidation methionine oxidation methionine sulfoxide reductases oxidized protein repair ageing |
| title | The Oxidized Protein Repair Enzymes Methionine Sulfoxide Reductases and Their Roles in Protecting against Oxidative Stress, in Ageing and in Regulating Protein Function |
| title_full | The Oxidized Protein Repair Enzymes Methionine Sulfoxide Reductases and Their Roles in Protecting against Oxidative Stress, in Ageing and in Regulating Protein Function |
| title_fullStr | The Oxidized Protein Repair Enzymes Methionine Sulfoxide Reductases and Their Roles in Protecting against Oxidative Stress, in Ageing and in Regulating Protein Function |
| title_full_unstemmed | The Oxidized Protein Repair Enzymes Methionine Sulfoxide Reductases and Their Roles in Protecting against Oxidative Stress, in Ageing and in Regulating Protein Function |
| title_short | The Oxidized Protein Repair Enzymes Methionine Sulfoxide Reductases and Their Roles in Protecting against Oxidative Stress, in Ageing and in Regulating Protein Function |
| title_sort | oxidized protein repair enzymes methionine sulfoxide reductases and their roles in protecting against oxidative stress in ageing and in regulating protein function |
| topic | protein oxidation methionine oxidation methionine sulfoxide reductases oxidized protein repair ageing |
| url | https://www.mdpi.com/2076-3921/7/12/191 |
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