Divalent cation sequestration

“Divalent cation sequestration” refers to the general biochemical process in which *divalent cations* (such as Ca²⁺, Mg²⁺, Zn²⁺, Mn²⁺) are bound and removed from solutions, cellular compartments, or biological macromolecules by chelating agents or specific binding proteins. This mechanism is critical in biological contexts—for example, EDTA is a common chelating agent used to experimentally sequester such ions, thereby modulating processes that depend on those ions (like enzyme activity, membrane stability, nucleic acid structure, or cytoskeletal dynamics)[4][5][6]. In biomedical science, the concept of divalent cation sequestration is often invoked in descriptions of how the removal or binding of such ions alters protein conformation, cellular signaling, DNA/RNA/protein assembly, or cell wall integrity. However, it is not itself a molecular target, drug target, receptor, or enzyme, but a chemical/biophysical phenomenon[3][4][5][6]. If you are seeking information about a specific *protein* that sequesters divalent cations (for example, calbindin, calmodulin, parvalbumin, metallothionein, or chelating drugs like EDTA), please provide the protein or drug name for targeted information.