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Plant and Cell Physiology, 1985, Vol. 26, No. 3 579-584
© 1985

Short Communication

Separation and Partial Characterization of Membranes from Prochloron sp.1

Tatsuo Omata2,5, Mitsumasa Okada3 and Norio Murata2,4,6

2 Department of Biology, College of Arts and Sciences, University of Tokyo Komaba, Meguro-ku, Tokyo 153, Japan
3 Department of Biology, Faculty of Science, Toho University Funabashi, Chiba 274, Japan

4 To whom correspondence and reprint requests should be addressed

Two differently colored membrane preparations were separated from the prochlorophyte, Prochloron sp., by mechanical disintegration of the cells followed by sucrose density gradient centrifugation. An orange-colored preparation, containing zeaxanthin as the major constituent pigment, seemed to comprise the cytoplasmic membrane. The other green-colored membrane preparation, containing ß-carotene and chlorophyll a and b as major pigment constituents, was identified as the thylakoid membrane. The two types of membranes were compared as to their absorption spectra and buoyant densities.

1 This work is one of the results of the 8th International Expedition on Prochloron organized by Dr. R. A. Lewin, University of California at San Diego.

5 Present address: Solar Energy Research Group, The Algatron, The Institute of Physical and Chemical Research (RIKEN), Wako-shi, Saitama 351, Japan.

6 Present address: National Institute for Basic Biology, Okazaki 444, Japan.

(Received October 19, 1984; Accepted January 7, 1985)
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