electron transport system

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electron transport system

[i′lek‚trän ′trans‚pȯrt ‚sis·təm]
(biochemistry)
The components of the final sequence of reactions in biological oxidations; composed of a series of oxidizing agents arranged in order of increasing strength and terminating in oxygen.
References in periodicals archive ?
Pheophytin donates the excited electron to the first member of the electron transport chain (ETC).
Also, the electron transport chain is carrying excited electrons away from PSII, and the fate of these electrons should be an element of curiosity.
In support of this argument, a specific mitochondrial electron transport chain defect (complex I, NADH:ubiquinone oxidoreductase) was identified in platelets of patients with sporadic Parkinson disease (PD), suggesting that PD is in fact a systemic disorder and not confined to a small portion of the brain (9).
Abnormalities of the electron transport chain in idiopathic Parkinson's disease.
Elesclomol is a first-in-class mitochondrial metabolism inhibitor that exerts potent anti-cancer activity through targeting the electron transport chain in mitochondria.
Once inside mitochondria, an interaction with the electron transport chain reduces the copper from Cu(II) to Cu(I), resulting in a cascade of redox reactions, a rapid increase of oxidative stress, disruption of mitochondrial energy production, and the initiation of the mitochondrial apoptosis pathway.
This last group includes disorders of gluconeogenesis, the pyruvate dehydrogenase complex, the Krebs cycle, and the mitochondrial electron transport chain [1].
Two of these three children had an abnormally high CSF lactate concentration, which had prompted further investigations leading to the diagnosis of defects in the electron transport chain.
The topics include the nitrogen cycle in the Archaean as an intricate interplay of enzymatic and abiotic reactions, the organization of respiratory electron transport chains in nitrate-reducing and nitrifying bacteria, the transport and assimilation of inorganic nitrogen in bacteria, the assembly of respiratory proteins of the nitrogen cycle, the physiology and regulatory mechanisms of nitric oxide metabolism, and nitrous oxide production in the terrestrial environment.
The third and fourth lessons in the kit, Electron Transport Chains in Cellular Respiration and Photosynthesis, are superb examples of effective instructional tools to help the teacher model and explain such concepts.

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