Supercomplexes of Prokaryotic Aerobic Respiratory Chains-Escherichia coli and Bacillus subtilis supramolecular assemblies

Abstract

Aerobic respiratory chains are composed of a series of membrane complexes that catalyze the electron transfer from reducing substrates to oxygen. The energy released through this process is used to translocate protons across the membranes, thus generating a proton motive force that activates F1FO-ATP synthase to synthesize ATP. The arrangement of these enzymes in the inner mitochondrial membrane is well characterized in mammalian mitochondria, where different sets of supramolecular assemblies, or supercomplexes, involving the majority of the respiratory complexes were described, reinforcing the idea of an operational solid state model wherein the oxidative phosphorylation processes are optimized.(...)