Archiv für Mikrobiologie

, Volume 59, Issue 1, pp 32–40

Ferredoxin-dependent carbon assimilation in Rhodospirillum rubrum

Authors

  • Bob B. Buchanan
    • Department of Cell PhysiologyUniversity of California
  • M. C. W. Evans
    • Department of Cell PhysiologyUniversity of California
  • Daniel I. Arnon
    • Department of Cell PhysiologyUniversity of California
Article

DOI: 10.1007/BF00406314

Cite this article as:
Buchanan, B.B., Evans, M.C.W. & Arnon, D.I. Archiv. Mikrobiol. (1967) 59: 32. doi:10.1007/BF00406314

Summary

Evidence has been presented that a soluble fraction from R. rubrum cells contains two new primary carboxylation reactions which depend on the reducing power of ferredoxin: (a) pyruvate synthase which brings about a synthesis of pyruvate from acetyl-CoA and CO2 and (b) α-ketoglutarate synthase which brings about a synthesis of α-ketoglutarate from succinyl-CoA and CO2. The soluble fraction of R. rubrum cells contains also a series of other enzymes which, together with the ferredoxin-dependent enzymes, constitutes a reductive carboxylic acid cycle—a new cyclic pathway for CO2 assimilation that was first found in the photosynthetic bacterium, Chlorobium thiosulfatophilum.

Copyright information

© Springer-Verlag 1967