Metal ion (via chelation)

Metal ions via chelation is not a specific molecular target but rather describes a chemical process in which **chelating agents** bind to various **metal ions** through multiple coordinate bonds. This process forms stable ring-like structures called *chelates*, effectively sequestering the metal and altering its biological availability or toxicity. In medicine, this principle underlies **chelation therapy**, where drugs such as EDTA or DMSA are used to treat heavy metal poisoning by binding toxic metals like lead or mercury so they can be safely excreted from the body. Biologically, chelation is also fundamental for nutrient acquisition—microorganisms secrete siderophores to capture iron—and for maintaining proper levels of essential trace elements in cells. However, "metal ions via chelation" does not refer to a single protein or receptor but rather an entire class of interactions between small molecules and diverse metallic elements. Because this entry refers broadly to all possible "metal ions" targeted by any "chelator," it is too generic and does not correspond to a unique therapeutic target as typically defined in pharmacology. Therefore: • It should not be considered a canonical drug target. • The entry is overly broad and non-specific; it would need refinement into individual targets such as “Iron(III) ion,” “Copper(II) ion,” etc., each with their own context-dependent roles.

Other names

Metal ionsChelated metalMetal chelateChelatable metal ion

Chelation and sequestration of free or toxic metal ions to form stable complexes that are more easily excreted from the body