Photosensitized Oxidation of Methionine-Containing Dipeptides. From the Transients to the Final Products

2014 ◽  
Vol 118 (29) ◽  
pp. 8549-8558 ◽  
Author(s):  
Marta T. Ignasiak ◽  
Tomasz Pedzinski ◽  
Filippo Rusconi ◽  
Piotr Filipiak ◽  
Krzysztof Bobrowski ◽  
...  
Keyword(s):  
Photosensitized Oxidation ◽  
Oxidation Of Methionine

Type I Photosensitized Oxidation of Methionine †

2020 ◽  
Author(s):  
Carolina Castaño ◽  
Andrés H. Thomas ◽  
Carolina Lorente
Keyword(s):  
Type I ◽  
Photosensitized Oxidation ◽  
Oxidation Of Methionine

scholarly journals Peptide-Bound Methionine Sulfoxide (MetO) Levels and MsrB2 Abundance Are Differentially Regulated during the Desiccation Phase in Contrasted Acer Seeds

Antioxidants ◽  
2020 ◽  
Vol 9 (5) ◽  
pp. 391 ◽  
Author(s):  
Natalia Wojciechowska ◽  
Shirin Alipour ◽  
Ewelina Stolarska ◽  
Karolina Bilska ◽  
Pascal Rey ◽  
...  
Keyword(s):  
Desiccation Tolerance ◽  
Methionine Sulfoxide ◽  
Redox Status ◽  
Embryonic Axes ◽  
Seed Desiccation ◽  
Methionine Sulfoxide Reductases ◽  
Norway Maple ◽  
Orthodox Seeds ◽  
Oxidation Of Methionine ◽  
Reduced Forms

Norway maple and sycamore produce desiccation-tolerant (orthodox) and desiccation-sensitive (recalcitrant) seeds, respectively. Drying affects reduction and oxidation (redox) status in seeds. Oxidation of methionine to methionine sulfoxide (MetO) and reduction via methionine sulfoxide reductases (Msrs) have never been investigated in relation to seed desiccation tolerance. MetO levels and the abundance of Msrs were investigated in relation to levels of reactive oxygen species (ROS) such as hydrogen peroxide, superoxide anion radical and hydroxyl radical (•OH), and the levels of ascorbate and glutathione redox couples in gradually dried seeds. Peptide-bound MetO levels were positively correlated with ROS concentrations in the orthodox seeds. In particular, •OH affected MetO levels as well as the abundance of MsrB2 solely in the embryonic axes of Norway maple seeds. In this species, MsrB2 was present in oxidized and reduced forms, and the latter was favored by reduced glutathione and ascorbic acid. In contrast, sycamore seeds accumulated higher ROS levels. Additionally, MsrB2 was oxidized in sycamore throughout dehydration. In this context, the three elements •OH level, MetO content and MsrB2 abundance, linked together uniquely to Norway maple seeds, might be considered important players of the redox network associated with desiccation tolerance.

Oxidation of Methionine in Proteins: Roles in Antioxidant Defense and Cellular Regulation

IUBMB Life ◽  
2000 ◽  
Vol 50 (4) ◽  
pp. 301-307 ◽  
Author(s):  
Rodney L. Levine ◽  
Jackob Moskovitz ◽  
Earl R. Stadtman
Keyword(s):  
Antioxidant Defense ◽  
Cellular Regulation ◽  
Oxidation Of Methionine

scholarly journals Oxidation of Methionine Residues to Methionine Sulfoxides Does Not Decrease Potential Antiatherogenic Properties of Apolipoprotein A-I

2000 ◽  
Vol 275 (26) ◽  
pp. 19536-19544 ◽  
Author(s):  
Ute Panzenböck ◽  
Leonard Kritharides ◽  
Mark Raftery ◽  
Kerry-Anne Rye ◽  
Roland Stocker
Keyword(s):  
Apolipoprotein A ◽  
Methionine Residues ◽  
Oxidation Of Methionine

Acetone-sensitized anaerobic photo-oxidation of methionine

FEBS Letters ◽  
1970 ◽  
Vol 10 (2) ◽  
pp. 129-131 ◽  
Author(s):  
G. Gennari ◽  
G. Jori
Keyword(s):  
Photo Oxidation ◽  
Oxidation Of Methionine
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