A multisubunit enzyme complex containing cytochrome a group; CYTOCHROME A3; two copper atoms; and 13 different protein subunits. It is the terminal oxidase complex of the RESPIRATORY CHAIN and collects electrons that are transferred from the reduced cytochrome c group and donates them to molecular oxygen, which is then reduced to water. The redox reaction is simultaneously coupled to the transport of protons across the inner mitochondrial membrane.

Symptoms and diagnosis



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