Bacterial Respiratory Chains
Bacterial respiratory chains provide a biochemical scaffold for the shuttling of electrons from organic and inorganic energy sources to a variety of acceptor molecules. This process is coupled to the generation of an electrochemical gradient, which may be used to generate energy in the form of ATP via the F1Fo ATPase.
The aim of this entry is to provide an overview of the function, structure, biosynthesis, and evolution of respiratory chains in bacteria. Classical ideas of respiratory function describe the generation of an electrochemical gradient across the inner membrane via the translocation of protons derived from the oxidation of reduced nicotinamide adenine dinucleotide (NADH) and succinate. This proton-motive force may then be used by the F1FoATPase to synthesize ATP. However, the mechanism via which this gradient is achieved depends upon a number of environmental and genetic factors. One common feature of...
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