Iron chelation and free radical scavenging

"Iron chelation and free radical scavenging" is not a single molecular target but rather describes two related biochemical activities. **Iron chelation** refers to the binding and sequestration of free iron ions by small molecules or peptides, thereby preventing the catalysis of harmful reactions such as the Fenton reaction that generates highly reactive hydroxyl radicals. **Free radical scavenging** involves neutralizing reactive oxygen species (ROS), including superoxide anion, hydrogen peroxide, and hydroxyl radicals—species that can cause oxidative damage to lipids, proteins, and DNA. Both activities are important in protecting cells from oxidative stress-related injury seen in conditions like cancer, cardiovascular diseases, neurodegeneration, inflammation, and especially disorders involving iron overload such as thalassemia. Therapeutically relevant agents include synthetic drugs like deferoxamine as well as natural compounds such as flavonoids; these act through both direct ROS quenching and by reducing available catalytic metal ions. However, "iron chelation/free radical scavenging" does not refer to a specific protein or receptor but rather a pharmacological property shared by diverse molecules. Because this entry does not correspond to a discrete molecular target but instead describes mechanisms or properties applicable across many compounds—and because it combines two distinct though related concepts—it should be flagged for correction if used in structured drug-target databases.

Other names

Iron chelatorsFree radical scavengersAntioxidants (context-dependent)

Chelation of free iron to prevent Fenton reaction-mediated generation of hydroxyl radicals; Direct scavenging of reactive oxygen species such as superoxide and hydroxyl radicals