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Science 15 November 1985:
Vol. 230. no. 4727, pp. 818 - 820
DOI: 10.1126/science.230.4727.818
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Articles

Novel Role for Phycoerythrin in a Marine Cyanobacterium, Synechococcus Strain DC2

M. WYMAN 1, R. P. F. GREGORY 2, and N. G. CARR 3

1 Department of Biological Sciences, University of Warwick, Coventry CV4 7AL, Great Britain
2 Department of Biochemistry, University of Manchester, Manchester M13 9PL, Great Britain
3 Department of Biological Sciences, University of Warwick

Cyanobacterial picoplankton contribute substantially to oceanic primary productivity. The colored protein phycoerythrin is the major component of their light-harvesting apparatus. It was found that in Synechococcus strain DC2 a variable proportion of the light energy absorbed by phycoerythrin is lost as autofluorescence and therefore is not passed to a photoreaction center. Phycoerythrin may serve two functionally distinct roles in this organism: as a nitrogen reserve and as a collector of quanta for photosynthesis.

Submitted on April 4, 1985
Accepted on July 26, 1985


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