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. 1969 Jul;63(3):963–969. doi: 10.1073/pnas.63.3.963

SPECTRAL EVIDENCE FOR A NEW PHOTOREACTIVE COMPONENT OF THE OXYGEN-EVOLVING SYSTEM IN PHOTOSYNTHESIS

David B Knaff 1, Daniel I Arnon 1,*
PMCID: PMC223546  PMID: 16591780

Abstract

On illuminating chloroplasts with “short-wavelength” monochromatic light that supports oxygen evolution, spectral evidence was obtained for a new photoreactive chloroplast component, provisionally designated C550, which shows a reversible decrease of absorbance with a maximum at 550 mμ. The light-induced absorbance changes in C550 have been separated from those due to cytochromes in the same spectral region.

The light-induced decrease of absorbance in C550 appears to be independent of temperature, persisting even at -189° and is therefore likely to be linked to the primary light reaction associated with oxygen evolution in photosynthesis.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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