Cyclic Changes in Thylakoid Membranes of Synchronized Chlamydomonas reinhardi*

  1. Seth Schor,
  2. Philip Siekevitz, and
  3. George E. Palade
  1. LABORATORY OF CELL BIOLOGY, THE ROCKEFELLER UNIVERSITY

Abstract

Cyclic variations in the activity of photosystems I and II occur during the cell cycle of wild-type Chlamydomonas reinhardi. These variations have been localized to chloroplast thylakoid membranes and correlated with corresponding changes in the ratio of chloroplast cytochromes to chlorophyll.

Footnotes

  • ↵ * This work was partially supported by National Institutes of Health grant 5 RO1 HD-01689 to P. Siekevitz. We thank Drs. D. Mauzerall and S. Granick for use of their Cary model 15 spectrophotometer.

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  1. PNAS May 1, 1970 vol. 66 no. 1 174-180
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