The Experts below are selected from a list of 48 Experts worldwide ranked by ideXlab platform

G Elli - One of the best experts on this subject based on the ideXlab platform.

  • the function of ascorbic acid in Photosynthetic Phosphorylation
    Plant Physiology, 1995
    Co-Authors: Giorgio Forti, G Elli
    Abstract:

    Ascorbate is oxidized to the free radical monodehydroascorbate by O2.- and by H2O2 (through the action of ascorbate peroxidase) formed in the Mehler reaction by isolated spinach (Spinacia oleracea) thylakoids. Light-dependent electron transport from water to monodehydroascorbate is shown to be coupled to ATP formation with a ratio ATP:O2 of 2. In the presence of ascorbate the net O2 exchange balance of the Mehler reaction is close to zero, and the synthesis of ATP is increased 2 to 3 times due to the extra electron transport to the monodehydroascorbate free radical. A scheme of the electron transport in the presence of ascorbate is discussed.

Giorgio Forti - One of the best experts on this subject based on the ideXlab platform.

  • the function of ascorbic acid in Photosynthetic Phosphorylation
    Plant Physiology, 1995
    Co-Authors: Giorgio Forti, G Elli
    Abstract:

    Ascorbate is oxidized to the free radical monodehydroascorbate by O2.- and by H2O2 (through the action of ascorbate peroxidase) formed in the Mehler reaction by isolated spinach (Spinacia oleracea) thylakoids. Light-dependent electron transport from water to monodehydroascorbate is shown to be coupled to ATP formation with a ratio ATP:O2 of 2. In the presence of ascorbate the net O2 exchange balance of the Mehler reaction is close to zero, and the synthesis of ATP is increased 2 to 3 times due to the extra electron transport to the monodehydroascorbate free radical. A scheme of the electron transport in the presence of ascorbate is discussed.

Ravikrishnan Elangovan - One of the best experts on this subject based on the ideXlab platform.

  • new perspectives on Photosynthetic Phosphorylation in the light of a torsional mechanism of energy transduction and atp synthesis
    Journal of Bioenergetics and Biomembranes, 2011
    Co-Authors: Sunil Nath, Ravikrishnan Elangovan
    Abstract:

    New perspectives on photoPhosphorylation have been offered from the standpoint of the torsional mechanism of energy transduction and ATP synthesis. New experimental data on the involvement of malate anions in ATP synthesis in an acid-base malate bath procedure has been reported on spinach chloroplast thylakoids as the model system. The data cannot be reconciled with the chemiosmotic theory but has been shown to be naturally explained by the torsional mechanism. The path of malic acid in the acid and base stages of the experiment has been traced, offering further strong support to the new paradigm. Classical observations in the field have been re-interpreted in the light of these findings. A new concept of ion translocation, energy transduction and coupling at the overall physiological level in photoPhosphorylation has been presented and a large number of novel experimentally testable predictions have been made and shown to arise as logical consequences of the new perspectives.

Peter Mitchell - One of the best experts on this subject based on the ideXlab platform.

  • chemiosmotic coupling in oxidative and Photosynthetic Phosphorylation
    Biochimica et Biophysica Acta, 2011
    Co-Authors: Peter Mitchell
    Abstract:

    Abstract 50 years ago Peter Mitchell proposed the chemiosmotic hypothesis for which he was awarded the Nobel Prize for Chemistry in 1978. His comprehensive review on chemiosmotic coupling known as the first “Grey Book”, has been reprinted here with permission, to offer an electronic record and easy access to this important contribution to the biochemical literature. This remarkable account of Peter Mitchell's ideas originally published in 1966 is a landmark and must-read publication for any scientist in the field of bioenergetics. As far as was possible, the wording and format of the original publication have been retained. Some changes were required for consistency with BBA formats though these do not affect scientific meaning. A scanned version of the original publication is also provided as a downloadable file in Supplementary Information . See also Editorial in this issue by Peter R. Rich. Original title: CHEMIOSMOTIC COUPLING IN OXIDATIVE AND Photosynthetic Phosphorylation, by Peter Mitchell, Glynn Research Laboratories, Bodmin, Cornwall, England.

Sunil Nath - One of the best experts on this subject based on the ideXlab platform.

  • new perspectives on Photosynthetic Phosphorylation in the light of a torsional mechanism of energy transduction and atp synthesis
    Journal of Bioenergetics and Biomembranes, 2011
    Co-Authors: Sunil Nath, Ravikrishnan Elangovan
    Abstract:

    New perspectives on photoPhosphorylation have been offered from the standpoint of the torsional mechanism of energy transduction and ATP synthesis. New experimental data on the involvement of malate anions in ATP synthesis in an acid-base malate bath procedure has been reported on spinach chloroplast thylakoids as the model system. The data cannot be reconciled with the chemiosmotic theory but has been shown to be naturally explained by the torsional mechanism. The path of malic acid in the acid and base stages of the experiment has been traced, offering further strong support to the new paradigm. Classical observations in the field have been re-interpreted in the light of these findings. A new concept of ion translocation, energy transduction and coupling at the overall physiological level in photoPhosphorylation has been presented and a large number of novel experimentally testable predictions have been made and shown to arise as logical consequences of the new perspectives.