Canadian Medical Guide > Chemicals and Drugs > Enzymes and Coenzymes > Enzymes > Multienzyme Complexes > Electron Transport Chain Complex Proteins Terms and Definitions

Electron Transport Chain Complex Proteins

Medical Definition:	A complex of enzymes and PROTON PUMPS located on the inner membrane of the MITOCHONDRIA and in bacterial membranes. The protein complex provides energy in the form of an electrochemical gradient, which may be used by either MITOCHONDRIAL PROTON-TRANSLOCATING ATPASES or BACTERIAL PROTON-TRANSLOCATING ATPASES.
Guide Notes:	GEN: prefer specifics
Also Called:	Bacterial Electron Transport Chain Complex Proteins,Mitochondrial Electron Transport Chain Complex Proteins

Electron Transport Chain Complex Proteins Categories.

	Electron Transport Complex IV - 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 RESIPIRATORY 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.
	Electron-Transferring Flavoproteins - Flavoproteins that serve as specific electron acceptors for a variety of DEHYDROGENASES. They participate in the transfer of electrons to a variety of redox acceptors that occur in the respiratory chain.
	Succinate Cytochrome c Oxidoreductase - An electron transport chain complex that catalyzes the transfer of electrons from SUCCINATE to CYTOCHROME C. It includes ELECTRON TRANSPORT COMPLEX II and ELECTRON TRANSPORT COMPLEX III.

Electron Transport Chain Complex Proteins Medical Definitions and Terms

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