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Nitric oxide (NO) inhibits the mitochondrial respiratory chain, resulting in inhibition of ATP production, increased oxidant production and increased susceptibility to cell death. NO reversibly binds to the oxygen binding site of cytochrome oxidase, reacting either with the oxidised copper to give inhibitory nitrite, or with the reduced haem, resulting in reversible inhibition in competition with...
Nitric oxide (NO) and its derivatives peroxynitrite and S-nitrosothiols inhibit mitochondrial respiration by various means, but the mechanisms and/or the reversibility of such inhibitions are not clear. We find that the NO-induced inhibition of respiration in isolated mitochondria due to inhibition of cytochrome oxidase is acutely reversible by light. Light also acutely reversed the inhibition of...
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