1. Effects of calcium channel blockers and DCMU on motility and the photophobic response of Gyrodinium dorsum

   • Nils G. A. Ekelund

   Original Papers Pages: 187 - 190

2. Inhibition of Bradyrhizobium japonicum nifA-dependent nif gene activation by oxygen occurs at the NifA protein level and is irreversible

   • Ines Kullik
   • Hauke Hennecke
   • Hans-Martin Fischer

   Original Papers Pages: 191 - 197

3. Genetic analysis of inducible sexual agglutination ability in the yeast Saccharomyces cerevisiae

   • Yoshiyuki Nakagawa

   Original Papers Pages: 198 - 202

4. Cloning of a DNA region from Bradyrhizobium japonicum encoding pleiotropic functions in heme metabolism and respiration

   • Thomas M. Ramseier
   • Brigitte Kaluza
   • Hauke Hennecke

   Original Papers Pages: 203 - 212

5. Protonmotive force in Brevibacterium flavum: the lack of intracellular pH homeostasis

   • Uldis Z. Kalnenieks
   • Juris B. Saulitis
   • Juris E. Shivinka

   Original Papers Pages: 213 - 219

6. Isolation and characterization of thymidylate synthetase mutants of Xanthomonas maltophilia

   • Thomas P. West

   Original Papers Pages: 220 - 222

7. Formation of Metallogenium-like structures by a manganese-oxiding fungus

   • David Emerson
   • Rhea E. Garen
   • William C. Ghiorse

   Original Papers Pages: 223 - 231

8. Sulfate formation via ATP sulfurylase in thiosulfate- and sulfite-disproportionating bacteria

   • Michael Krämer
   • Heribert Cypionka

   Original Papers Pages: 232 - 237

9. Transport of branched-chain amino acids in Corynebacterium glutamicum

   • Holger Ebbighausen
   • Brita Weil
   • Reinhard Krämer

   Original Papers Pages: 238 - 244

10. The ultrastructure of chemolithoautotrophic Gallionella ferruginea and Thiobacillus ferrooxidans as revealed by chemical fixation and freeze-etching

    • Susanne Lütters
    • H. H. Hanert

    Original Papers Pages: 245 - 251

11. Chloroflexus aurantiacus secretes 3-hydroxypropionate, a possible intermediate in the assimilation of CO² and acetate

    • Helge Holo

    Original Papers Pages: 252 - 256

12. The separate roles of PQQ and apo-enzyme syntheses in the regulation of glucose dehydrogenase activity in Klebsiella pneumoniae NCTC 418

    • R. W. J. Hommes
    • P. T. D. Herman
    • O. M. Neijssel

    Original Papers Pages: 257 - 260

13. The influence of the culture pH value on the direct glucose oxidative pathway in Klebsiella pneumoniae NCTC 418

    • R. W. J. Hommes
    • P. W. Postma
    • O. M. Neijssel

    Original Papers Pages: 261 - 267

14. Environmental control of metabolic fluxes in thermotolerant methylotrophic Bacillus strains

    • Anthony G. Brooke
    • Elizabeth M. Watling
    • David W. Tempest

    Original Papers Pages: 268 - 273

15. Uridine and dolichyl diphosphate activated oligosaccharides are intermediates in the biosynthesis of the S-layer glycoprotein of Methanothermus fervidus

    • Evamarie Hartmann
    • Helmut König

    Original Papers Pages: 274 - 281

16. Changes in protein composition of facultatively aerobic sulfur-dependent archaebacteria depending on growth conditions

    • Arnulf Kletzin
    • Andreas Segerer
    • Friedrich Klink

    Short Communication Pages: 282 - 284

17. Effect of environmental phosphate concentration on protein export by Bacillus licheniformis NCIB 6346

    • M. J. Lancaster
    • C. W. Keevil
    • R. C. W. Berkeley

    Erratum Pages: 285 - 285