Chloroplast respiration ptox
WebChloroplast respiration has been extensively studied and reviewed (Peltier and Cournac, 2002; Rumeau et al., 2007; McDonald et al., 2011; Foudree et al., 2012; Nawrocki et al., 2015), but there is no consensus about its biological role. The most accepted hypothesis is that chlororespiration acts as a WebMay 16, 2024 · These results show that PTOX localization within the chloroplast is highly dynamic and depends on the pH in the stroma, and/or on the ion concentration. Membrane association with the grana lamellae is required to allow PTOX the access to its lipophilic substrate plastoquinol. In vitro, purified PTOX associated at slightly alkaline pH-value to ...
Chloroplast respiration ptox
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WebChlororespiration is the uptake of oxygen into the respiratory electron transport chain (ETC) localized in the thylakoid membranes of chloroplasts. The chlororespiratory ETC interacts with... WebJun 3, 2024 · Chlororespiration refers to a respiratory electron transport chain in the thylakoid membrane of chloroplasts, which interacts with the photosynthetic electron transport chain and involves both non-photochemical reduction and oxidation of the PQ pool with the corresponding consumption of molecular oxygen ( Nixon 2000, Bennoun 2002, …
WebNov 29, 2024 · PTOX2 Cannot Compete with cyt. b 6 f-PSI for Oxidation of the PQ Pool in Continuous Light. The low rate of electron flow sustained by PTOX ranges from 0.1 to 5 e − PSII −1 s −1 in the chloroplasts of plants and C. reinhardtii (Houille-Vernes et al., 2011; Trouillard et al., 2012), which does not qualify PTOX as an efficient electron sink.Despite … WebJul 17, 2015 · Chlororespiration is a respiratory process located in chloroplast thylakoids which consists in an electron transport chain from NAD(P)H to oxygen. This …
WebDec 5, 2011 · The major role attributed to PTOX in Arabidopsis is as a central regulator of excitation pressure during chloroplast biogenesis . Developing plastids have a threshold of excitation pressure that in im plants results in variegation. of PTOX and NADPH dehydrogenase (NDA2) by immuno-blotting. The …
WebOn 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 …
WebJul 1, 2016 · Chloroplast NDH originated from the cyanobacterial NDH-1 complex. In Synechocystis PCC6803, NDH-1 is involved in the three distinct functions, namely … locking adjustableWebPTOX in chloroplasts of higher plants is closely related to AOX and this enzyme is involved in carotenoid biosynthesis (Fu et al. 2012, Tamiru et al. 2014. The facts that the P. … locking adult footed pajamasWebJan 26, 2013 · Chlororespiratory ETC involves electron donation from NAD (P)H to PQ by NDH, and oxidation of PQ by the plastid terminal oxidase (PTOX) (Fig. 1) (Nixon 2000 ). PTOX has been proposed to be sensitive to AA (Ravenel and Peltier 1991 ), although later studies did not support this suggestion (Cournac et al. 2000 ). locking adhesiveWebPTOX is the terminal oxidase of the plant chloroplast respiration. In this research we chosen PTOX gene of 9 kinds species, downloaded their nucleotide and protein sequence from NCBI as the research object, found strawberry PTOX gene via bioinformation analyses, constructed phylogenetic tree. india tourism day 2023WebApr 28, 2024 · The plastid terminal oxidase (PTOX) – an interfacial diiron carboxylate protein found in the thylakoid membranes of chloroplasts – oxidizes plastoquinol and reduces molecular oxygen to water. india tourism essayWebChlororespiration refers to a respiratory electron transfer chain coexisting with the PETC on chloroplasts thylakoid membranes that involves the nonphotochemical reduction of PQ … locking adjustable clampWebPTOX Plastid terminal oxidase AS16 3692 Clonality: Polyclonal Host: Rabbit Reactivity: Araidopsis thaliana, Chlamydomonas reinhardtii … india tourism bureau