1. A new facultatively nitrite oxidizing bacterium, Nitrobacter vulgaris sp. nov.

   • Eberhard Bock
   • Hans-Peter Koops
   • Michael Rudert

   Original Papers Pages: 105 - 110

2. Core substructure in Mastigocladus laminosus phycobilisomes

   • Wolfgang Reuter
   • Werner Wehrmeyer

   Original Papers Pages: 111 - 117

3. Carotenoids from the aerobic photosynthetic bacterium, Erythrobacter longus: β-Carotene and its hydroxyl derivatives

   • Shinichi Takaichi
   • Keizo Shimada
   • Jun-ichi Ishidsu

   Original Papers Pages: 118 - 122

4. Evolutionary relationship of some stalked and budding bacteria (genera Caulobacter, “Hyphobacter”, Hyphomonas and Hyphomicrobium) as studied by the new integral taxonomical method

   • D. I. Nikitin
   • O. Yu. Vishnewetskaya
   • I. V. Zlatkin

   Original Papers Pages: 123 - 128

5. Expression of the Cellulomonas fimi cellulase genes cex and cenA from the divergent tet promoters of transposon Tn10

   • Neena Din
   • C. F. Beck
   • R. A. J. Warren

   Original Papers Pages: 129 - 133

6. DNA topoisomerase I from Alcaligenes eutrophus H16

   • Ladislav Anděra
   • Karel Mikulík

   Original Papers Pages: 134 - 138

7. Mapping of pgi and gpd genes involved in C-1 assimilation in the obligate methylotroph Methylobacillus flagellatum

   • L. V. Kletsova
   • Y. D. Tsygankov

   Original Papers Pages: 139 - 145

8. Physiological aspects of glyphosate degradation in Alcaligenes spec. strain GL

   • Werner Lerbs
   • Manfred Stock
   • Benno Parthier

   Original Papers Pages: 146 - 150

9. Desulfurella acetivorans gen. nov. and sp. nov. —a new thermophilic sulfur-reducing eubacterium

   • E. A. Bonch-Osmolovskaya
   • T. G. Sokolova
   • G. A. Zavarzin

   Original Papers Pages: 151 - 155

10. Methanogenesis from acetate in cell extracts of Methanosarcina barkeri: Isotope exchange between CO₂ and the carbonyl group of acetyl-CoA, and the role of H₂

    • Reinhard Fischer
    • Rudolf K. Thauer

    Original Papers Pages: 156 - 162

11. Purification and characterization of a NAD⁺-dependent secondary alcohol dehydrogenase from propane-grown Rhodococcus rhodochrous PNKb1

    • William Ashraf
    • J. Colin Murrell

    Original Papers Pages: 163 - 168

12. Ribulose bisphosphate carboxylase activity in halophilic Archaebacteria

    • Wijaya Altekar
    • Rema Rajagopalan

    Original Papers Pages: 169 - 174

13. Effects of respiratory activity on starvation survival of marine vibrios

    • Adam J. Smigielski
    • Brian J. Wallace
    • Kevin C. Marshall

    Original Papers Pages: 175 - 180

14. Characterization of sucrose-hydrolyzing enzymes of Zymomonas mobilis

    • Laurence Preziosi
    • Gérard P. F. Michel
    • Jacques Baratti

    Original Papers Pages: 181 - 186

15. A comparison of two strains of the anaerobic ciliate Trimyema compressum

    • Nico K. Goosen
    • Stefan Wagener
    • Claudius K. Stumm

    Original Papers Pages: 187 - 192

16. 3-Fluorobenzoate enriched bacterial strain FLB 300 degrades benzoate and all three isomeric monofluorobenzoates

    • Karl H. Engesser
    • Georg Auling
    • Hans-J. Knackmuss

    Original Papers Pages: 193 - 199

17. Fermentation of methoxyacetate to glycolate and acetate by newly isolated strains of Acetobacterium sp.

    • Beate Schuppert
    • Bernhard Schink

    Original Papers Pages: 200 - 204

18. Thermococcus litoralis sp. nov.: A new species of extremely thermophilic marine archaebacteria

    • Annemarie Neuner
    • Holger W. Jannasch
    • Karl. O. Stetter

    Short Communication Pages: 205 - 207

19. Acknowledgement to referees

    Acknowledgments Pages: 208 - 208