S-Nitrosation of Cellular Proteins by NO Donors in Rat Embryonic Fibroblast 3Y1 Cells: Factors Affecting S-Nitrosation

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S-Nitrosation of Cellular Proteins by NO Donors in Rat Embryonic Fibroblast 3Y1 Cells: Factors Affecting S-Nitrosation

The mechanism of protein S-nitrosation in cells is not fully understood. Using rat 3Y1 cells, we addressed this issue. Among S-nitrosothiols and NO donors tested, only S-nitrosocysteine (CysNO) induced S-nitrosation when exposed in Hanks' balanced salt solution (HBSS) and not in serum-containing general culture medium. In HBSS, NO release from CysNO was almost completely abolished by sequesteri...

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At neutral pH, S-nitrosoglutathione was formed by the reaction of reduced glutathione and sodium nitrite. The degradation of S-nitrosoglutathione, presumably by transnitrosation/denitrosation, was catalyzed by L-cysteine, or CoA-SH. Additionally, from the crude extract of rat brain, one protein with a large molecular mass was nitrosolated with nitrite, and was split into duplet peptides noted i...

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The S-nitrosation (also referred to as S-nitrosylation) of cysteine residues is an important post-translational protein modification that regulates protein function and cell signaling. The original research articles and reviews in this Forum cover important concepts in protein S-nitrosation and identify key developments and opportunities for progress in this area. Defining the mechanisms by whi...

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ژورنال

عنوان ژورنال: Oxidative Medicine and Cellular Longevity

سال: 2011

ISSN: 1942-0900,1942-0994

DOI: 10.1155/2011/450317