The electron transport chain (ETC) is a group of protein complexes that function in the last stage of cellular respiration.
In eukaryotes, the electron transport chain is found in the inner mitochondrial membrane where each component acts in sequence to catalyze redox reactions, transfer electrons from their donor to acceptor molecules, and simultaneously transport protons (H+) across the inner mitochondrial membrane to the intermembrane space.
This process of transferring electrons via the ETC regenerates nicotinamide adenine dinucleotide (NAD+) and flavin adenine dinucleotide (FAD+) to resupply the metabolic pool.
Moreover, the transfer of protons across the membrane also establishes the proton gradients which provide energy for oxidative phosphorylation that synthesizes adenosine triphosphate (ATP) for cellular use.
Негізгі бет Electron Transport Chain (Part 2)
Пікірлер