1. Evidence for carrier-mediated, energy-dependent uptake of urea in some bacteria

   • Thomas Jahns
   • Alexandra Zobel
   • Heinrich Kaltwasser

   Original Papers Pages: 377 - 383

2. Nitrite reduction in Bacteroids of Rhizobium “hedysari” strain HCNT 1

   • S. Casella
   • J. P. Shapleigh
   • W. J. Payne

   Original Papers Pages: 384 - 388

3. Degradation of diarylethane structures by Pseudomonas fluorescens biovar I

   • B. González
   • I. Olave
   • R. Vicuña

   Original Papers Pages: 389 - 394

4. A new purple sulfur bacterium from stratified freshwater lakes, Amoebobacter purpureus sp. nov.

   • Barbara Eichler
   • Norbert Pfennig

   Original Papers Pages: 395 - 400

5. Morphology of bacterial leaching patterns by Thiobacillus ferrooxidans on synthetic pyrite

   • M. Rodriguez-Leiva
   • H. Tributsch

   Original Papers Pages: 401 - 405

6. Identification of constitutive and herbicide inducible cytochromes P-450 in Streptomyces griseolus

   • Daniel P. O'Keefe
   • James A. Romesser
   • Kenneth J. Leto

   Original Papers Pages: 406 - 412

7. Physiological comparison of d-cysteine desulfhydrase of Escherichia coli with 3-chloro-d-alanine dehydrochlorinase of Pseudomonas putida CR 1-1

   • Toru Nagasawa
   • Takafumi Ishii
   • Hideaki Yamada

   Original Papers Pages: 413 - 416

8. Physiological and genetic analysis of the glucose-fructose permeation system in two Synechocystis species

   • F. Joset
   • T. Buchou
   • R. Jeanjean

   Original Papers Pages: 417 - 421

9. The effect of penicillin on the encystment of Bdellovibrio sp. strain W

   • John J. Tudor
   • Joseph A. DiGiuseppe

   Original Papers Pages: 422 - 426

10. Incorporation of tritiated thymidine by marine bacterial isolates when undergoing a starvation survival response

    • Per Mården
    • Malte Hermansson
    • Staffan Kjelleberg

    Original Papers Pages: 427 - 432

11. CO₂ fixation in halobacteria

    • Barbara J. Javor

    Original Papers Pages: 433 - 440

12. Mutants of the obligate methylothroph Methylobacillus flagellatum KT defective in genes of the ribulose monophosphate cycle of formaldehyde fixation

    • L. V. Kletsova
    • E. S. Chibisova
    • Y. D. Tsygankov

    Original Papers Pages: 441 - 446

13. Characterization of Desulfovibrio fructosovorans sp. nov.

    • B. Ollivier
    • R. Cord-Ruwisch
    • J. L. Garcia

    Original Papers Pages: 447 - 450

14. Specific binding of the calcium channel blocker [³H]verapamil to membrane fractions of Chlamydomonas reinhardtii

    • Reiner Dolle
    • Wilhelm Nultseh

    Original Papers Pages: 451 - 458

15. Phenylalanine and tyrosine metabolism in the facultative methylotroph Nocardia sp. 239

    • L. de Boer
    • W. Harder
    • L. Dijkhuizen

    Original Papers Pages: 459 - 465

16. Transport of leucine in the cyanobacterium Anabaena variabilis

    • Teresa Thiel

    Original Papers Pages: 466 - 470

17. Pleotropic mutants from Alcaligenes eutrophus defective in the metabolism of hydrogen, nitrate, urea, and fumarate

    • D. Römermann
    • M. Lohmeyer
    • B. Friedrich

    Original Papers Pages: 471 - 475

18. Isolation and characterization of a virulent phage for Rhodobacter sphaeroides

    • Michael Duchrow
    • Stefan Heitefuss
    • Friedrich Giffhorn

    Original Papers Pages: 476 - 479