Oxidation and Phosphorylation by Mitochondria from Green Stems
نویسندگان
چکیده
منابع مشابه
The partial dissociation of phosphorylation from oxidation in plant mitochondria by respiratory chain inhibitors.
It is generally assumed that the specific inhibition of respiratory chain oxidations does not lead to any dissociation of phosphorylation from electron transfer. Support for this view has come from the demonstration that respiration in isolated animal mitochondria can be partially blocked by carbon monoxide (l), low concentrations of azide (2), or antimycin A (3) without affecting the ratio of ...
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1. Spinach (Spinacia oleracea L.) leaf extracts catalyse the oxidation of formate to CO(2). 2. Two enzymic systems are responsible for this oxidation, the peroxidatic action of catalase (EC 1.11.1.6) and NAD-dependent formate dehydrogenase (EC 1.2.1.2). 3. Formate dehydrogenase is mainly, if not exclusively, located in the mitochondria. This enzyme has a pH optimum of 6-6.5 and a K(m) for forma...
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It has recently been reported (2) that oxidative phosphorylation occurs when organic acids of the citric acid cycle are supplied as substrates to particles isolated from the cotyledons of etiolated lupine seedlings. The ratios of the number of moles of orthophosphate consumed to the number of atoms of oxygen taken up (P/0 ratios) were found to be as high as those previously reported only for an...
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The role of mitochondria in the phosphorylation of ADP to ATP in the early steps of seed germination has been studied. Mitochondria were extracted from dry sunflower (Helianthus annuus) seeds. Adenylate kinase-dependent ATP synthesis was inhibited by p(1),p(5)-di(adenosine-5')pentaphosphate. Synthesis of ATP was observed with the different substrates: citrate, alpha-ketoglutarate, succinate, ma...
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ژورنال
عنوان ژورنال: Plant Physiology
سال: 1960
ISSN: 0032-0889,1532-2548
DOI: 10.1104/pp.35.5.708