Abstract
Introduction: Cysteine is a versatile amino acid for selective chemical modification of proteins with both chemical and biological innovations, which plays a key role in different organic reactions.
Materials and Methods: Chemical modification of proteins is a rapidly expanding area in chemical biology. Selective installation of biochemical probes has led to a better understanding of natural protein modification and macromolecular function. In other cases, such as chemical alterations, the protein function has entirely changed. This review paper considers the organic reaction of cysteine, the reactivity of this α-amino acid containing sulfur, and several methodologies are also discussed. Herein, we focused on the reaction of cysteine and its application in organic synthesis, which includes addition, condensation, substitution, oxidation, and ring-opening reactions.
Results and Discussion: Hence monitoring of cysteine is pivotal through the preparation of some fluorescent probes to detect cysteine in high sensitivity. Also, a bibliometric analysis was carried out using Web of Science and Scopus databases that demonstrated significant contributions being observed in organic synthesis. Analysis of keywords revealed that research hotspots were cysteine, sensor, unclassified drug, and amino acid.
Conclusion: Therefore, it seems that future research focuses on using cysteine amino acids in various fields as natural products and organic reactions. This focused review highlights the enduring utility of cysteine in protein modification and sensor preparation, with a special focus on recent innovations in chemistry and biology associated with such modifications.
Keywords: Cysteine, organic synthesis, substitution, addition, condensation, bibliometric analysis.
Graphical Abstract
Call for Papers in Thematic Issues
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Photoswitches for Molecular Recognition
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