Nigericin is an antibiotic derived from Streptomyces hygroscopicus. Its isolation was described in the 1950s and in 1968 the structure could be elucidated by X-ray crystallography. The structure and properties of nigericin are similar to the antibiotic monensin. Commercially it is obtained as a byproduct or contaminant at the fermentation of Geldanamycin. It is also called Polyetherin A Azalomycin M Helixin C Antibiotic K178 Antibiotic X-464.Nigericin acts as an H+ K+ Pb2+ ionophore.
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