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Plant Physiology 51:72-75 (1973)
© 1973 American Society of Plant Biologists

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Formation of Carbon Monoxide and Bile Pigment in Red and Blue-Green Algae 1

Robert F. Troxler and Joy M. Dokos

a Department of Biochemistry, Boston University School of Medicine, Boston, Massachusetts 02118

Five blue-green and one red algal species produced carbon monoxide during photosynthetic growth. The blue-green algae synthesized CO and phycocyanobilin in equimolar quantities at identical rates. The red alga, Porphyridium cruentum, incorporated {Delta}-aminolevulinic acid-5-14C into phycoerythrobilin and CO. The ratio of the specific radioactivity of phycoerythrobilin to that of CO, and the kinetics and stoichiometry of phycocyanobilin and CO formation suggest that linear tetrapyrroles in plants are derived by the porphyrin pathway via the intermediate formation of heme. The similarity between bile pigment production in algae and in mammalian systems is discussed.

1 Supported by National Science Foundation Grant GB 20924.




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W. M. Schluchter and A. N. Glazer
Characterization of Cyanobacterial Biliverdin Reductase. CONVERSION OF BILIVERDIN TO BILIRUBIN IS IMPORTANT FOR NORMAL PHYCOBILIPROTEIN BIOSYNTHESIS
J. Biol. Chem., May 23, 1997; 272(21): 13562 - 13569.
[Abstract] [Full Text] [PDF]


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