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Photosynthesis by Isolated Chloroplasts
Evidence is given for the action of the photochemically generated assimilatory power on two phases of the reductive carbohydrate cycle in isolated chloroplasts: the carboxylative phase which includes the phosphorylation of ribulose monophosphate and the fixation of COZ, and the reduction of 3-phosphoglyceric acid and the formation of hexose phosphate.
Paracoccus denitrificans and the evolutionary origin of the mitochondrion
It is demonstrated that Paracoccus denitrificans resembles a mitochondrion more closely than do other bacteria, in that it effectively assembles in a single organism those features of the
From extracellular to intracellular: the establishment of mitochondria and chloroplasts
It is speculated that the chloroplasts of the remaining algae may have had a eukaryotic origin, and the evolution of organelles from endosymbiotic precursors would involve their integration with the host cell biochemically, structurally and numerically.
Identification by Gas Chromatography-Mass Spectrometry of 150 Compounds in Propolis
Abstract Propolis was analyzed by gas chromatography-mass spectrometry for both its headspace volatiles and for the less volatile components of its alcoholic extract (propolis balsam). 181 peaks were
The analysis of bud exudate of Populus x euramericana, and of propolis, by gas chromatography–mass spectrometry
Propolis and bud exudate of Populus x euramericana have been analysed by high-resolution gas chromatography–mass spectrometry; 104 compounds have been identified, including 26 not previously
The reversibility of active sulphate transport in membrane vesicles of Paracoccus denitrificans.
It is proposed that the sulphate carrier in the plasma membrane of P. denitrificans operates by a mechanism of electroneutral proton symport, and is capable of actively transporting sulphate in either direction across the plasma membranes, but that in whole cells respiration-driven proton expulsion drives the accumulative uptake of sulphate.