1. Penicillin-binding proteins of protoplast and sporoplast membranes of Streptomyces griseus strains

   • Judit Barabás
   • György Barabás
   • Wim Harder

   Original Papers Pages: 105 - 108

2. Glycerol-3-phosphatase and the control of glycerol metabolism in Dunaliella tertiolecta cells

   • Dirk Belmans
   • André Van Laere

   Original Papers Pages: 109 - 112

3. Growth and nitrogenase activity of Azotobacter vinelandii in the presence of several phenolic acids

   • J. Moreno
   • J. González-López
   • G. R. Vela

   Original Papers Pages: 113 - 116

4. Thiobacillus strain Q, a chemolithoheterotrophic sulphur bacterium

   • P. J. F. Gommers
   • J. G. Kuenen

   Original Papers Pages: 117 - 125

5. Properties of in vivo nitrogenase activity in Beggiatoa alba

   • James K. Polman
   • John M. Larkin

   Original Papers Pages: 126 - 130

6. The role of auxiliary oxidants in maintaining redox balance during phototrophic growth of Rhodobacter capsulatus on propionate or butyrate

   • David J. Richardson
   • Glenn F. King
   • J. Barry Jackson

   Original Papers Pages: 131 - 137

7. Isolation of transposon Tn5 insertion mutants of Rhodobacter capsulatus unable to reduce trimethylamine-N-oxide and dimethylsulphoxide

   • D. J. Kelly
   • D. J. Richardson
   • J. B. Jackson

   Original Papers Pages: 138 - 144

8. Membrane-bound NADPH dehydrogenase- and ferredoxin: NADP oxidoreductase activity involved in electron transport during acetate oxidation to CO₂ in Desulfobacter postgatei

   • Dieter Möller-Zinkhan
   • Rudolf K. Thauer

   Original Papers Pages: 145 - 154

9. Dihydroxyacetone kinase from a methylotrophic yeast, Hansenula polymorpha CBS 4732

   • Nobuo Kato
   • Hiroshi Yoshikawa
   • Chikahiro Sakazawa

   Original Papers Pages: 155 - 159

10. Flavodoxin from the nitrogen-fixing cyanobacterium Anabaena PCC 7119

    • Maria F. Fillat
    • Gerhard Sandmann
    • Carlos Gomez-Moreno

    Original Papers Pages: 160 - 164

11. Cultivation of the sapropelic ciliate Plagiopyla nasuta Stein and isolation of the endosymbiont Methanobacterium formicicum

    • Nico K. Goosen
    • Anja M. C. Horemans
    • Godfried D. Vogels

    Original Papers Pages: 165 - 170

12. The in vivo construction of 4-chloro-2-nitrophenol assimilatory bacteria

    • C. Bruhn
    • R. C. Bayly
    • H. -J. Knackmuss

    Original Papers Pages: 171 - 177

13. An extremely thermophilic Methanococcus from a deep sea hydrothermal vent and its plasmid

    • Honxue Zhao
    • Alvin G. Wood
    • Marvin P. Bryant

    Original Papers Pages: 178 - 183

14. A second streptomycin resistance gene from Streptomyces griseus codes for streptomycin-3″-phosphotransferase

    • Peter Heinzel
    • Oleg Werbitzky
    • Wolfgang Piepersberg

    Original Papers Pages: 184 - 192

15. The cytochromes of a marine Beggiatoa

    • Roger C. Prince
    • Karen E. Stokley
    • Holger W. Jannasch

    Original Papers Pages: 193 - 196

16. Algae sequester heavy metals via synthesis of phytochelatin complexes

    • Walter Gekeler
    • Erwin Grill
    • Meinhart H. Zenk

    Original Papers Pages: 197 - 202

17. Rapid change in cyclic 3′,5′-AMP concentration triggered by a light-off or light-on signal in Anabaena cylindrica

    • Masayuki Ohmori
    • Kazuko Ohmori
    • Kohji Hasunuma

    Short Communications Pages: 203 - 204

18. Localization of the F₄₂₀-reducing hydrogenase in Methanococcus voltae cells by immuno-gold technique

    • Erika Muth

    Short Communications Pages: 205 - 207

19. Erratum

    Erratum Pages: 208 - 208