1. Macroscopic phototactic behavior of the purple photosynthetic bacterium Rhodospirillum centenum

   • Lisa Ragatz
   • Ze-Yu Jiang
   • Howard Gest

   Original Paper Pages: 1 - 6

2. Immuno-gold localization of hepatotoxins in cyanobacterial cells

   • Liang Shi
   • Wayne W. Carmichael
   • Iain Miller

   Original Paper Pages: 7 - 15

3. Nitrogen loss caused by denitrifying Nitrosomonas cells using ammonium or hydrogen as electron donors and nitrite as electron acceptor

   • Eberhard Bock
   • Ingo Schmidt
   • Dirk Zart

   Original Paper Pages: 16 - 20

4. Pyruvate: ferredoxin oxidoreductase from the sulfate-reducing Archaeoglobus fulgidus: molecular composition, catalytic properties, and sequence alignments

   • Jasper Kunow
   • Dietmar Linder
   • Rudolf K. Thauer

   Original Paper Pages: 21 - 28

5. New species of psychrophilic acetogens: Acetobacterium bakii sp. nov., A. paludosum sp. nov., A. fimetarium sp. nov.

   • O. R. Kotsyurbenko
   • M. V. Simankova
   • G. A. Osipov

   Original Paper Pages: 29 - 34

6. Cloning, nucleotide sequence, and expression of the gene encoding a novel dioxygenase involved in metabolism of carboxydiphenyl ethers in Pseudomonas pseudoalcaligenes POB310

   • Uwe Dehmel
   • Karl-Heinrich Engesser
   • Daryl F. Dwyer

   Original Paper Pages: 35 - 41

7. A pathway for biodegradation of 1-naphthoic acid by Pseudomonas maltophilia CSV89

   • Prashant S. Phale
   • Milind C. Mahajan
   • Chelakard S. Vaidyanathan

   Original Paper Pages: 42 - 47

8. Isolation and characterization of Dehalospirillum multivorans gen. nov., sp. nov., a tetrachloroethene-utilizing, strictly anaerobic bacterium

   • Heidrun Scholz-Muramatsu
   • Anke Neumann
   • Gabriele Diekert

   Original Paper Pages: 48 - 56

9. Cryptic dehalogenase and chloroamidase genes in Pseudomonas putida and the influence of environmental conditions on their expression

   • Stephen J. Hope
   • J. Howard Slater

   Original Paper Pages: 57 - 64

10. Tetrameric structure and cellular location of catechol 2,3-dioxygenase

    • Jörg Winkler
    • Lindsay D. Eltis
    • Manfred Rohde

    Original Paper Pages: 65 - 69

11. Stomatococcus mucilaginosus produces a mannose-containing lipoglycan rather than lipoteichoic acid

    • Iain C. Sutcliffe
    • Lesley A. Old

    Original Paper Pages: 70 - 75

12. betaine modulates intracellular thiol and potassium levels in Escherichia coli in medium with high osmolarity and alkaline pH

    • Galina Smirnova
    • Oleg Oktyabrsky

    Short Communication Pages: 76 - 78