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Plant and Cell Physiology, 1986, Vol. 27, No. 4 751-754
© 1986

Short Communication

Enhancement of Oxygen-Evolution in Photosystem II-Phycobilisome Particles from Porphyridium cruentum

Barbara M. Chereskin1 and Elisabeth Gantt

Smithsonian Environmental Research Center 12441 Parklawn Drive, Rockville, MD 20852-1773, U.S.A.

Oxygen-evolving photosystem II-phycobilisome particles from a red alga were inhibited 50–80% by aging, dilution, low pH and salt-washing. Bovine serum albumin, and dithiothreitol were found to stimulate activity in all but salt-washed particles. CaCl2 and MnCl2 partially restored activity lost after aging or dilution.

1Current address: Waksman Institute of Microbiology, Rutgers University, Piscataway, New Jersey 08854-0759, U.S.A.

(Received October 5, 1985; Accepted March 31, 1986)
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