peptide-glazing-fluid-price The chemical carbonylation of arginine in peptides and proteins refers to a modification process where a carbonyl group is introduced into arginine residues within these biomolecules. This chemical transformation is a significant post-translational modification (PTM) and is often studied in the context of oxidative stress, where it can serve as a biomarker of protein damage. Understanding the mechanisms and implications of arginine carbonylation is crucial for various biological and chemical research areas.
Protein carbonylation, including the modification of arginine, is an irreversible and generally non-enzymatic process.作者：L Prosser·2025·被引用次数：10—We introduce achemicalmethodology aimed at generating glutamate-5-semialdehyde fromarginineresidues withinpeptides and proteins. It typically involves the oxidation of amino acid side chains, leading to the formation of carbonyl groups2025年3月15日—This supplement highlights the insights that communities affected by climate change are sharing with researchers and policymakers, and explores .... For arginine, this can result in the conversion of its guanidino group into various oxidized forms, including aldehyde groups. This modification is distinct from other protein modifications and can significantly alter protein structure and function.
Recent advancements have focused on developing specific chemical methods for the targeted modification of arginine residues in peptides and proteins. These methodologies are valuable for several reasons:
* Incorporating Functional Handles: Chemical carbonylation can be used to introduce an aldehyde handle into peptides. This functional group can then be utilized for further chemical reactions, such as bioconjugation or labeling, allowing researchers to attach other molecules or probes to specific sites within a peptide or protein.
* Analyzing Modification Sites: By employing selective chemical strategies, researchers can identify and analyze protein sites that are particularly susceptible to carbonylation. This helps in understanding the mechanisms of oxidative damage and pinpointing vulnerable regions within proteins.
* Developing Detection Tools: The ability to chemically modify arginine residues can aid in the development of tools and reagents for detecting and quantifying protein carbonylation. This is important for diagnostic purposes, especially in conditions associated with oxidative stress2025年3月28日—Arginine carbonylation plays a key role in disease-associated oxidative stress, with implications in Alzheimer's disease, cancer, diabetes, ....
* Expanding Peptide Chemical Space: Novel acid-mediated chemoselective strategies are emerging that allow for the targeted modification of arginine residues, thereby expanding the chemical space accessible for peptide modification and the creation of novel peptide-based therapeutics or research tools.
The arginine carbonylation process has significant implications in various biological contexts, particularly concerning health and disease.
* Oxidative Stress Biomarker: Protein carbonylation, including that of arginine, is widely recognized as a key indicator of oxidative stress(PDF) Arginine-Selective Chemical Labeling Approach for .... Elevated levels of carbonylated proteins are often observed in diseases such as Alzheimer's disease, cancer, and diabetes, suggesting a role in disease pathogenesis.
* Protein Function and Stability: The introduction of carbonyl groups can alter the three-dimensional structure of proteins, potentially leading to loss of function, aggregation, or increased susceptibility to degradation.作者：U Que-Salinas·2022—...proteins(peptides), reaching astronomical proportions. To this huge variety, so-called post-translational modifications of amino acids must ... This can disrupt normal cellular processes and contribute to disease progressionArginine Carbonylation - Research.
* Aging: Age-related increases in protein carbonylation have been observed, indicating that this modification may play a role in the aging process and the decline of cellular function over time.
Investigating and identifying protein carbonylation sites is a critical area of research. Techniques that combine chemical labeling with advanced analytical methods, such as mass spectrometry, are employed to map these modifications. This allows for a deeper understanding of which specific arginine residues are modified and how these modifications impact protein function.
In conclusion, the chemical carbonylation of arginine in peptides and proteins is a dynamic field of research with significant implications for understanding oxidative stress, developing new chemical tools, and advancing our knowledge of protein modifications in health and diseaseMonika Raj (0000-0001-9636-2222). The ongoing development of precise chemical methodologies promises to further illuminate the role of arginine carbonylation in biological systems.
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