1. End-product regulation of carotenogenesis in Phycomyces

   • Eduardo R. Bejarano
   • Fernando Parra
   • Enrique Cerdá-Olmedo

   Original Papers Pages: 209 - 214

2. Lysine degradation in Candida maltosa: occurrence of a novel enzyme, acetyl-CoA: L-lysine N-acetyltransferase

   • Heike Schmidt
   • Rüdiger Bode
   • Dieter Birnbaum

   Original Papers Pages: 215 - 218

3. Isolation of cobamides from Methanothrix soehngenii: 5-methylbenzimidazole as the α-ligand of the predominant cobamide

   • Hans-Peter E. Kohler

   Original Papers Pages: 219 - 223

4. Occurrence of nitrogen fixation among Vibrio spp.

   • Maria C. Urdaci
   • Lucas J. Stal
   • Michel Marchand

   Original Papers Pages: 224 - 229

5. Chlorobenzoate catabolism and interactions between Alcaligenes and Pseudomonas species from Bloody Run Creek

   • R. Campbell Wyndham
   • Neil A. Straus

   Original Papers Pages: 230 - 236

6. Catabolic instability, plasmid gene deletion and recombination in Alcaligenes sp. BR60

   • R. Campbell Wyndham
   • Rama K. Singh
   • Neil A. Straus

   Original Papers Pages: 237 - 243

7. Disproving the hypothesis of a common ancestry for the Ochromonas danica chrysoplast and Heliobacterium chlorum

   • D. Witt
   • E. Stackebrandt

   Original Papers Pages: 244 - 248

8. Reversible conversion of coenzyme F₄₂₀ to the 8-OH-AMP and 8-OH-GMP esters, F₃₉₀-A and F₃₉₀-G, on oxygen exposure and reestablishment of anaerobiosis in Methanobacterium thermoautotrophicum

   • Andreas Kiener
   • William H. Orme-Johnson
   • Christopher T. Walsh

   Original Papers Pages: 249 - 253

9. Eubacterium acidaminophilum sp. nov., a versatile amino acid-degrading anaerobe producing or utilizing H₂ or formate

   • U. Zindel
   • W. Freudenberg
   • F. Widdel

   Original Papers Pages: 254 - 266

10. Growth and butyric acid production by Clostridium populeti

    • G. B. Patel
    • B. J. Agnew

    Original Papers Pages: 267 - 271

11. The regulation of aromatic amino acid biosynthesis in amino acid liberating mutant strains of Anabaena variabilis

    • Gordon W. Niven
    • Nigel W. Kerby
    • William D. P. Stewart

    Original Papers Pages: 272 - 277

12. Sulfonylurea-resistant mutants and natural tolerance of cyanobacteria

    • Devorah Friedberg
    • Julie Seijffers

    Original Papers Pages: 278 - 281

13. Sporomusa termitida sp. nov., an H₂/CO₂-utilizing acetogen isolated from termites

    • John A. Breznak
    • Jodi M. Switzer
    • H. -J. Seitz

    Original Papers Pages: 282 - 288

14. The intracellular polyglucose storage granules of Spirochaeta aurantia

    • Andrew M. Kropinski
    • William C. Ghiorse
    • E. Peter Greenberg

    Original Papers Pages: 289 - 295

15. Immunocytochemical localization of APS reductase and bisulfite reductase in three Desulfovibrio species

    • D. R. Kremer
    • M. Veenhuis
    • T. A. Hansen

    Original Papers Pages: 296 - 301

16. Influence of salts and pH on the growth as well as NADH oxidase of the halotolerant bacterium A505

    • Shinichi Nagata

    Original Papers Pages: 302 - 308

17. Sensitivity of yeast glycolytic enzymes to chloroquine

    • Alexander Manhart
    • Henryk Kalisz
    • Helmut Holzer

    Short Communication Pages: 309 - 312