Abstract
Peroxidase activity of cytochrome c stimulated by interaction of the protein with cardiolipin is considered to be involved in the induction of mitochondrial apoptosis associated with cytochrome c release from mitochondria. In model systems, this activity has been previously shown to cause permeabilization of cardiolipin-containing membranes. Here, we found that the antibiotic minocycline, known to have neuroprotective properties, inhibited both the binding of cyt c to cardiolipin-containing membranes and the cyt c/H2O2-induced liposome permeabilization. The results could be relevant to inhibition of cyt c release from mitochondria exerted by minocycline.
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