1. Deoxyribonucleic acid reassociation in the taxonomy of the genus Chlorella

   • V. A. R. Huss
   • A. Hehenberger
   • E. Kessler

   Original Papers Pages: 1 - 3

2. Monoxenic culture of the anaerobic ciliate Trimyema compressum Lackey

   • S. Wagener
   • N. Pfennig

   Original Papers Pages: 4 - 11

3. The regulation of cytochrome c oxidase of Rhodobacter capsulatus by light and oxygen

   • H. Hüdig
   • G. Stark
   • G. Drews

   Original Papers Pages: 12 - 18

4. Transient state characteristics of changes in light conditions for the cyanobacterium Oscillatoria agardhii

   • A. F. Post

   Original Papers Pages: 19 - 23

5. The calcium requirement for functional vesicle development and nitrogen fixation by Frankia strains EAN1_pec and CpI1

   • L. S. Tisa
   • J. C. Ensign

   Original Papers Pages: 24 - 29

6. Isolation and some properties of soluble and membrane-bound cobalamin binding proteins of Euglena mitochondria

   • F. Watanabe
   • Y. Nakano
   • S. Kitaoka

   Original Papers Pages: 30 - 35

7. Cloning and sequence of the mdh structural gene of Escherichia coli coding for malate dehydrogenase

   • R. F. Vogel
   • K. -D. Entian
   • D. Mecke

   Original Papers Pages: 36 - 42

8. Regulation of S-adenosylhomocysteine hydrolase in the halophilic cyanobacterium Aphanothece halophytica: a possible role in glycinebetaine biosynthesis

   • M. H. Sibley
   • J. H. Yopp

   Original Papers Pages: 43 - 46

9. Dimethylsulphoxide and trimethylamine-N-oxide as bacterial electron transport acceptors: use of nuclear magnetic resonance to assay and characterise the reductase system in Rhodobacter capsulatus

   • G. F. King
   • D. J. Richardson
   • S. J. Ferguson

   Original Papers Pages: 47 - 51

10. Overproduction and rapid purification of the amidase of Streptococcus pneumoniae

    • J. L. García
    • E. García
    • R. López

    Original Papers Pages: 52 - 56

11. Nickel uptake in Rhodopseudomonas capsulata

    • S. Takakuwa

    Original Papers Pages: 57 - 61

12. Studies on the anaerobic degradation of benzoic acid and 2-aminobenzoic acid by a denitrifying Pseudomonas strain

    • K. Ziegler
    • K. Braun
    • G. Fuchs

    Original Papers Pages: 62 - 69

13. The development of the photosynthetic apparatus and energy transduction in malate-limited phototrophic cultures of Rhodobacter capsulatus

    • S. Grether-Beck
    • J. Oelze

    Original Papers Pages: 70 - 75

14. Temporal separation of nitrogen fixation and photosynthesis in the filamentous, non-heterocystous cyanobacterium Oscillatoria sp.

    • L. J. Stal
    • W. E. Krumbein

    Original Papers Pages: 76 - 80

15. Translational system of the hydrogen-oxidizing bacterium Alcaligenes eutrophus

    • K. Mikulík
    • I. Janda
    • G. A. Zavarzin

    Original Papers Pages: 81 - 86