Description
Nigericin Na (28643-80-3) is a polyether ionophore which disrupts membrane potential and stimulates ATPase activity in mitochondria. Induces apoptosis resulting from intracellular acidification. Ion selectivity for nigericin Na is K+> Rb+> Cs+>>Na+. Cell permeable.
Chemical Properties
NIGERICIN SODIUM SALT is white powder
Uses
Nigericin sodium is a salt of the atypical polyether antibiotic, nigericin. Since nigericin is an ionophore, its very high affinity for monovalent cations such as Na+ and K+ means that formation of a salt is a facile possess occurring during purification under any but highly acidic conditions. Typically, the salts of polyether ionophores like the free acid, are readily extracted into organic solvents. The sodium ion is stabilised within a polar pocket of the structure, effectively making the salt and free acid different chemical moieties with the potential for differing pharmacology, a fact not readily appreciated in the literature.
Uses
Nigericin sodium is the atypical salt of nigericin. Since nigericin is an ionophore, its very high affinity for monovalent cations such as Na+ and K+ means that formation of a salt is a facile possess occurring during purification under any but highly acidic conditions. Typically, the salts of polyether ionophores like the free acid, are readily extracted into organic solvents. The sodium ion is stabilised within a polar pocket of the structure, effectively making the salt and free acid different chemical moieties with the potential for differing pharmacology, a fact not readily appreciated in the literature.
Uses
Nigericin sodium salt is a polyether ionophore which catalyzes the electroneutral exchange of alkali metal (K+) for H+ (antiport). It disrupts membrane potential and stimulates ATPase activity in mitochondria. It transports monovalent cations across membranes with the following specificity: K+ >Rb+ >Cs+ >>Na. It kills bacteria by facilitating the diffusion of ions across membranes. It is widely used in studies of the consequences of changes in membrane potential in variable systems.
General Description
A monocarboxylate that catalyzes the electroneutral exchange of an alkali metal for H
+ (antiport). Transports monovalent cations across membranes with the following specificities: K
+>Rb
+>Cs
+>>Na
+. An antibiotic that kills bacteria by facilitating the diffusion of ions across membranes. Disrupts the membrane potential and stimulates mitochondrial ATPase activity.
Biochem/physiol Actions
Product does not compete with ATP.
Background
Nigericin is an electroneutral K+/H+ ionophore derived from S. hygroscopicus. This antibiotic is lipophilic and selectively causes efflux of potassium across mitochondrial membranes. The ion exchange can lead to disruption of membrane potential, changes in pH, and cell death making the compound useful for studying areas of interests such as apoptosis, mitosis, and the immune response.
References
[1] DMITRY AKHMEDOV. Mitochondrial matrix pH controls oxidative phosphorylation and metabolism-secretion coupling in INS-1E clonal beta cells.[J]. FASEB Journal, 2010, 24 11: 4613-4626. DOI:
10.1096/fj.10-162222[2] YI-NAN GONG. Chemical probing reveals insights into the signaling mechanism of inflammasome activation[J]. Cell Research, 2010, 20 12: 1289-1305. DOI:
10.1038/cr.2010.135
