1. The superficial antigenic mosaic of Methanobrevibacter smithii

   • E. Conway de Macario
   • A. J. L. Macario
   • A. Pastini

   Original Papers Pages: 311 - 316

2. Spirochaeta bajacaliforniensis sp. n. from a microbial mat community at Laguna Figueroa, Baja California Norte, Mexico

   • S. P. Fracek Jr.
   • J. F. Stolz

   Original Papers Pages: 317 - 325

3. Physiological and morphological changes during short term starvation of marine bacterial islates

   • Per Mårdén
   • Anders Tunlid
   • Staffan Kjelleberg

   Original Papers Pages: 326 - 332

4. The Rhodopseudomonas viridis photosynthetic membrane: arrangement in situ

   • Kenneth R. Miller
   • Jules S. Jacob

   Original Papers Pages: 333 - 339

5. Genotypic relationships between Prochloron samples from different localities and hosts as determined by DNA-DNA reassociations

   • Wytze T. Stam
   • Stella A. Boele-Bos
   • Ben K. Stulp

   Original Papers Pages: 340 - 341

6. Concurrent evolution of nitrogenase genes and 16S rRNA in Rhizobium species and other nitrogen fixing bacteria

   • H. Hennecke
   • K. Kaluza
   • E. Stackebrandt

   Original Papers Pages: 342 - 348

7. Pathways of hydrogen uptake in the cyanobacterium Nostoc muscorum

   • Hans Weisshaar
   • Peter Böger

   Original Papers Pages: 349 - 353

8. Presence of a Na⁺/H⁺ antiporter in Methanobacterium thermoautotrophicum and its role in Na⁺ dependent methanogenesis

   • Peter Schönheit
   • Dieter B. Beimborn

   Original Papers Pages: 354 - 361

9. Heat shock stress in Bacteroides fragilis

   • Heide J. K. Goodman
   • Eldie Strydom
   • David R. Woods

   Original Papers Pages: 362 - 364

10. Effects of myxothiazol and 5-undecyl-6-hydroxy-4,7-dioxobenzothiazole on the respiratory pathways of the phytopathogenic fluorescent bacteria Pseudomonas cichorii and Pseudomonas aptata

    • S. Cocchi
    • D. Zannoni

    Original Papers Pages: 365 - 369

11. Subcellular localization and glycoprotein nature of the invertase from the fission yeast Schizosaccharomyces pombe

    • Sergio Moreno
    • Teresa Ruíz
    • Luís Rodríguez

    Original Papers Pages: 370 - 374

12. Metabolic and energetic aspects of the growth of Clostridium butyricum on glucose in chemostat culture

    • Pia M. Crabbendam
    • O. M. Neijssel
    • D. W. Tempest

    Original Papers Pages: 375 - 382

13. Arrangement of genes TRP1 and TRP3 of Saccharomyces cerevisiae strains

    • Gerhard Braus
    • Rolf Furter
    • Ralf Hütter

    Original Papers Pages: 383 - 388

14. Role of mitochondria in ethanol tolerance of Saccharomyces cerevisiae

    • Andrés Aguilera
    • Tahía Benítez

    Original Papers Pages: 389 - 392

15. K⁺-ATPase from Rhizobium sp. UMKL 20

    • S. T. Lim

    Original Papers Pages: 393 - 396

16. Photodynamically induced chemoresponses of the colorless flagellate, Astasia longa, in the presence of riboflavin

    • Ewa Mikolajczyk
    • Donat-P. Häder
    • Wilhelm Nultsch

    Original Papers Pages: 397 - 402

17. The activities of two pathways of nitrate reduction in Rhodopseudomonas capsulata

    • Kassem Alef
    • J. Barry Jackson
    • Stuart J. Ferguson

    Original Papers Pages: 403 - 408