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Paraquat, the dication on the left, functions as an electron acceptor, disrupting respiration in plants. In biology, a terminal electron acceptor often refers to either the last compound to receive an electron in an electron transport chain, such as oxygen during cellular respiration, or the last cofactor to receive an electron within the electron transfer domain of a reaction center during ...
The electron transport chain comprises an enzymatic series of electron donors and acceptors. Each electron donor will pass electrons to an acceptor of higher redox potential, which in turn donates these electrons to another acceptor, a process that continues down the series until electrons are passed to oxygen, the terminal electron acceptor in ...
Dissimilatory metal-reducing microorganisms are a group of microorganisms (both bacteria and archaea) that can perform anaerobic respiration utilizing a metal as terminal electron acceptor rather than molecular oxygen (O 2), which is the terminal electron acceptor reduced to water (H 2 O) in aerobic respiration. [1]
In E. coli, fumarate is the terminal electron acceptor of the energy producing electron transport chain and fumarate reductase performs the crucial last step in this energy producing process that allows E. coli to grow when aerobic respiration and/or fermentation is not feasible. [16]
3) as a terminal electron acceptor. It is a widespread process that is used by many members of the Pseudomonadota. Many facultative anaerobes use denitrification because nitrate, like oxygen, has a high reduction potential. Many denitrifying bacteria can also use ferric iron (Fe 3+) and some organic electron acceptors.
Molecular oxygen is a good terminal electron acceptor because it is a strong oxidizing agent. The reduction of oxygen does involve potentially harmful intermediates. [ 81 ] Although the transfer of four electrons and four protons reduces oxygen to water, which is harmless, transfer of one or two electrons produces superoxide or peroxide anions ...
Halogenated organic compounds are used as the terminal electron acceptor, which results in their dehalogenation. [6] Reductive dehalogenation is the process by which this occurs. [6] It involves the reduction of halogenated compounds by removing the halogen substituents, while simultaneously adding electrons to the compound. [7]
The potential of NADH and FADH 2 is converted to more ATP through an electron transport chain with oxygen and protons (hydrogen ions) as the "terminal electron acceptors". Most of the ATP produced by aerobic cellular respiration is made by oxidative phosphorylation.