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- W2159807834 endingPage "74" @default.
- W2159807834 startingPage "49" @default.
- W2159807834 abstract "Plastids have retained from their cyanobacterial ancestor a fragment of the respiratory electron chain comprising an NADPH dehydrogenase and a diiron oxidase, which sustain the so-called chlororespiration pathway. Despite its very low turnover rates compared with photosynthetic electron flow, knocking out the plastid terminal oxidase (PTOX) in plants or microalgae leads to severe phenotypes that encompass developmental and growth defects together with increased photosensitivity. On the basis of a phylogenetic and structural analysis of the enzyme, we discuss its physiological contribution to chloroplast metabolism, with an emphasis on its critical function in setting the redox poise of the chloroplast stroma in darkness. The emerging picture of PTOX is that of an enzyme at the crossroads of a variety of metabolic processes, such as, among others, the regulation of cyclic electron transfer and carotenoid biosynthesis, which have in common their dependence on the redox state of the plastoquinone pool, set largely by the activity of PTOX in darkness." @default.
- W2159807834 created "2016-06-24" @default.
- W2159807834 creator A5014097984 @default.
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- W2159807834 creator A5020698036 @default.
- W2159807834 creator A5032452784 @default.
- W2159807834 creator A5067817165 @default.
- W2159807834 date "2015-04-29" @default.
- W2159807834 modified "2023-10-17" @default.
- W2159807834 title "The Plastid Terminal Oxidase: Its Elusive Function Points to Multiple Contributions to Plastid Physiology" @default.
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