COPPER ENZYMES IN ISOLATED CHLOROPLASTS. POLYPHENOLOXIDASE IN BETA VULGARIS.

@article{Arnon1949COPPEREI,
  title={COPPER ENZYMES IN ISOLATED CHLOROPLASTS. POLYPHENOLOXIDASE IN BETA VULGARIS.},
  author={Daniel I. Arnon},
  journal={Plant physiology},
  year={1949},
  volume={24 1},
  pages={
          1-15
        }
}
  • D. Arnon
  • Published 1949
  • Chemistry, Medicine
  • Plant physiology
The chloroplast, as the seat of chlorophyll pigments in plants, occupies a unique position in the economy of the green cell. In recent years there has been a renewed interest in the reactions and properties of chloroplasts as a result of the work of Hill (11, 12) and Hill and Scarisbrick (13, 14) who demonstrated that the reaction characteristic of photosynthesis in green plants, the evolution of oxygen, occurs in appreciable quantities in isolated chloroplasts under the influence of light and… 
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The present investigation has shown that typical copper “poisons” inhibit both photosynthesis and respiration in Chlorella cells, the respiration being less sensitive than photosynthesis.
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  • Chemistry
    Proceedings of the Royal Society of London. Series B - Biological Sciences
  • 1940
1.The isolated chloroplasts from Stellaria media show a progressive fall in activity approaching zero in 3-6 hr. Four different strains of the plant were grown which showed differences in the
Cytochrome and Respiratory Enzymes
The object of this paper is the study of the functional relationship between the intracellular haematin compounds and the oxidising enzymes such as dehydrases and oxidases. It was shown previously
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THE activity of isolated chloroplasts in light, measured by the oxygen evolved from ferric oxalate, has been shown to be relatively high. The ferric oxalate is reduced to ferrous oxalate and oxygen,
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THE high affinity for oxygen possessed by muscle hæmoglobin suggested its use as a very sensitive spectroscopic method for detecting and measuring small quantities of oxygen1. This method has now
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In this paper we propose to describe a comparatively simple method of preparation and purification of a polyphenol oxidase. The study of this highly purified enzyme makes possible the determination
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