1. Carbon monoxide pathway enzyme activities in a thermophilic anaerobic bacterium grown acetogenically and in a syntrophic acetate-oxidizing coculture

   • Monica J. Lee
   • Stephen H. Zinder

   Original Papers Pages: 513 - 518

2. Shikonin isovalerate: An inhibitor of photosystem II in Chlorogloeopsis fritschi

   • A. -K. J. Sallal
   • N. A. Nimer

   Original Papers Pages: 519 - 522

3. Characterization of a pyoverdine-deficient mutant of Pseudomonas fluorescens impaired in the secretion of extracellular lipase

   • L. Fernandez
   • C. San José
   • R. C. McKellar

   Original Papers Pages: 523 - 528

4. The kinetics of photoinhibition and its recovery in the red alga Porphyridium cruentum

   • Y. K. Lee
   • A. Vonshak

   Original Papers Pages: 529 - 533

5. Core substructure in Mastigocladus laminosus phycobilisomes

   • Wolfgang Reuter
   • Werner Wehrmeyer

   Original Papers Pages: 534 - 540

6. Distribution of charged pterins in nonmethanogenic archaebacteria

   • Xinli Lin
   • Robert H. White

   Original Papers Pages: 541 - 546

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

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

   Original Papers Pages: 547 - 551

8. Ethanol dissimilation in Desulfovibrio

   • D. R. Kremer
   • H. E. Nienhuis-Kuiper
   • T. A. Hansen

   Original Papers Pages: 552 - 557

9. Sulphated exopolysaccharides produced by two unicellular strains of cyanobacteria, Synechocystis PCC 6803 and 6714

   • Jean-Michel Panoff
   • Bernard Priem
   • Françoise Joset

   Original Papers Pages: 558 - 563

10. Induction of stress proteins by sodium chloride treatment in Bacillus subtilis

    • Michael Hecker
    • Christine Heim
    • Lothar Wölfel

    Original Papers Pages: 564 - 566

11. Capsule polysaccharide-protein-peptidoglycan complex in the cell envelope of Rhodobacter capsulatus

    • E. Bräutigam
    • F. Fiedler
    • J. Weckesser

    Original Papers Pages: 567 - 573

12. The production and utilization of intermediary elemental sulfur during the oxidation of reduced sulfur compounds by Thiobacillus ferrooxidans

    • W. Hazeu
    • W. H. Batenburg-van der Vegte
    • J. G. Kuenen

    Original Papers Pages: 574 - 579

13. Differential partitioning of geosmin and 2-methylisoborneol between cellular constituents in Oscillatoria tenuis

    • Jiuun-Tzong Wu
    • Friedrich Jüttner

    Original Papers Pages: 580 - 583

14. Sialic acid-containing lipopolysaccharides in purple nonsulfur bacteria

    • J. H. Krauss
    • G. Reuter
    • H. Mayer

    Original Papers Pages: 584 - 589

15. Poly-cis carotene pathway in the Scenedesmus mutant C-6D

    • Silvia Ernst
    • Gerhard Sandmann

    Original Papers Pages: 590 - 594

16. Isolation and characterization of hydrogenase-negative mutants of Azorhizobium caulinodans ORS571

    • W. de Vries
    • J. Ras
    • A. H. Stouthamer

    Original Papers Pages: 595 - 599

17. Thiosulfate production from cystine by the keratinolytic prokaryote Streptomyces fradiae

    • Jiří Kunert
    • Zdeněk Stránský

    Short Communication Pages: 600 - 601

18. The role of auxiliary oxidants in maintaining redox balance during phototrophic growth of Rhodobacter capsulatuspropionate or butyrate

    • David J. Richardson
    • Glenn F. King
    • J. Barry Jackson

    Erratum Pages: 602 - 602