Nigericin

Nigericin is an antibiotic derived from Streptomyces hygroscopicus. 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+, Pb++ ionophore. It most commonly is an antiporter of H+ and K+.

In the past Nigericin was used as an antibiotic active against gram positive bacteria. It inhibits the Golgi functions. Nigericin exhibits anti-HIV activity.

Properties

 * CAS number: 28643-80-3
 * Merck index: 12, 6633
 * Molecular weight: 747
 * Formula C 40 H67O 11 Na

The properties are copied from a manufacturer's Nigericin product page]