Carbon Dioxide-Fixation in Photosynthetic Green Sulfur Bacteria

See allHide authors and affiliations

Science  10 Jul 1970:
Vol. 169, Issue 3941, pp. 186-188
DOI: 10.1126/science.169.3941.186


The main products of carbon dioxide-fixation in washed suspensions of Chlorobium thiosulfatophilum are a polyglucose, α-ketoglutarate, and α-keto-β-methylvalerate. All of these can be formed by a mechanism involving the reductive carboxylic acid cycle. The reductive pentose phosphate cycle appears to play a quantitatively minor role in carbon dioxide-fixation under these conditions.

Stay Connected to Science