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- W3087392133 abstract "Abstract Purpose Proteins are the principal biomolecules in bacteria that are affected by the oxidants produced by the phagocytic cells. Most of the protein damage is irreparable though few unfolded proteins and covalently modified amino acids can be repaired by chaperones and repair enzymes respectively. This study reviews the three protein repair enzymes, protein l -isoaspartyl O-methyl transferase (PIMT), peptidyl proline cis-trans isomerase (PPIase), and methionine sulfoxide reductase (MSR). Methods Published articles regarding protein repair enzymes were collected from Google Scholar and PubMed. The information obtained from the research articles was analyzed and categorized into general information about the enzyme, mechanism of action, and role played by the enzymes in bacteria. Special emphasis was given to the importance of these enzymes in Salmonella Typhimurium. Results Protein repair is the direct and energetically preferred way of replenishing the cellular protein pool without translational synthesis. Under the oxidative stress mounted by the host during the infection, protein repair becomes very crucial for the survival of the bacterial pathogens. Only a few covalent modifications of amino acids are reversible by the protein repair enzymes, and they are highly specific in activity. Deletion mutants of these enzymes in different bacteria revealed their importance in the virulence and oxidative stress survival. Conclusion PIMT repairs isoaspartate residues, PPiase catalyzes the conversion of cis - trans forms of proline residues, while MSR repairs oxidized methionine (Met) residues in the proteins. These repair enzymes maintain the activities of the target protein(s), thus aid in bacterial survival and virulence. The interventions which can interfere with this mechanism could be used for the development of novel therapeutics." @default.
- W3087392133 created "2020-09-25" @default.
- W3087392133 creator A5017369093 @default.
- W3087392133 creator A5019136768 @default.
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- W3087392133 creator A5058478620 @default.
- W3087392133 creator A5063180064 @default.
- W3087392133 creator A5067796132 @default.
- W3087392133 date "2020-09-17" @default.
- W3087392133 modified "2023-10-06" @default.
- W3087392133 title "Role of protein repair enzymes in oxidative stress survival and virulence of Salmonella" @default.
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