Journal
FREE RADICAL RESEARCH
Volume 55, Issue 4, Pages 307-320Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/10715762.2020.1851027
Keywords
Protein carbonylation; oxidative modification; oxidative stress; lipid peroxidation; glycation
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Proteins can undergo oxidative modifications, leading to protein carbonylation which is considered a major hallmark of oxidative damage. Detection and quantification of protein carbonyls can be used to assess oxidative stress levels and cellular damage. Studying the molecular mechanisms and biological implications of protein carbonylation is important for understanding oxidative damage and identifying therapeutic targets.
Proteins are oxidatively modified by a large number of reactive species including reactive oxygen species, lipid peroxidation-derived aldehydes, and reducing sugars. Among divergent oxidative modifications, the introduction of carbonyl groups such as aldehyde, ketone, and lactam into the amino acid side chains of proteins is a major hallmark for oxidative damage to proteins, and is termed protein carbonylation. Detection and quantification of protein carbonyls are commonly performed to determine the level of oxidative stress in the context of cellular damage, aging, and several age-related disorders. This review focuses on the molecular mechanisms and biological implications of protein carbonylation, and also presents current analytical approaches for determining and characterizing carbonylated proteins.
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