1. Quinolone-resistant mutations of the gyrA gene of Escherichia coli

   • Hiroaki Yoshida
   • Tsuyoshi Kojima
   • Shinichi Nakamura

   OriginalPaper Pages: 1 - 7

2. The expression of β1 and β3 tubulin genes of Drosophila melanogaster is spatially regulated during embryogenesis

   • Alexander Gasch
   • Uwe Hinz
   • Renate Renkawitz-Pohl

   OriginalPaper Pages: 8 - 16

3. Two classes of Rhizobium meliloti infection mutants differ in exopolysaccharide production and in coinoculation properties with nodulation mutants

   • Peter Müller
   • Michael Hynes
   • Alfred Pühler

   OriginalPaper Pages: 17 - 26

4. Regulation of Mu element copy number in maize lines with an active or inactive Mutator transposable element system

   • Virginia Walbot
   • Christine Warren

   OriginalPaper Pages: 27 - 34

5. Nitrate assimilation in Neurospora crassa: Enzymatic and immunoblot analysis of wild-type and nit mutant protein products in nitrate-induced and glutamine-repressed cultures

   • Barry K. Hurlburt
   • Reginald H. Garrett

   OriginalPaper Pages: 35 - 40

6. An endo-exonuclease activity of yeast that requires a functional RAD52 gene

   • Terry Y. -K. Chow
   • Michael A. Resnick

   OriginalPaper Pages: 41 - 48

7. Transposon-induced alterations in the promoter region affect transcription of the chalcone synthase gene of Antirrhinum majus

   • Hans Sommer
   • Ulla Bonas
   • Heinz Saedler

   OriginalPaper Pages: 49 - 55

8. The effects of two mutations connected with chromatin functions on female germ-line cells of Drosophila

   • János Szabad
   • Günter Reuter
   • Max-Bernhard Schröder

   OriginalPaper Pages: 56 - 62

9. Use of recombination techniques to examine the structure of the csg locus of Myxococcus xanthus

   • Lawrence J. Shimkets
   • Sheilah J. Asher

   OriginalPaper Pages: 63 - 71

10. The J gene of ϕX174: Isolation and characterization of a J gene mutant

    • Robert K. Hamatake
    • Kenneth J. Buckley
    • Masaki Hayashi

    OriginalPaper Pages: 72 - 77

11. Cloning and characterization of the genes for the two homocysteine transmethylases of Escherichia coli

    • Iain G. Old
    • Michael G. Hunter
    • Robert E. Glass

    OriginalPaper Pages: 78 - 87

12. Enhancement of copper resistance and CupI amplification in carcinogen-treated yeast cells

    • Mirit I. Aladjem
    • Yigal Koltin
    • Sara Lavi

    OriginalPaper Pages: 88 - 94

13. Mapping and regulation of the cel genes in Erwinia chrysanthemi

    • Jean-Luc Aymeric
    • Annick Guiseppi
    • Marc Chippaux

    OriginalPaper Pages: 95 - 101

14. The yeast ARGRII regulatory protein has homology with various RNases and DNA binding proteins

    • Francine Messenguy
    • Evelyne Dubois

    OriginalPaper Pages: 102 - 105

15. Expression of the Escherichia coli dnaQ (mutD) gene is inducible

    • Ariel Quiñones
    • Reinhard Piechocki
    • Walter Messer

    OriginalPaper Pages: 106 - 112

16. Nucleotide homology and organization of chlorocatechol oxidation genes of plasmids pJP4 and pAC27

    • Debabrota Ghosal
    • In-Soon You

    OriginalPaper Pages: 113 - 120

17. Nucleotide sequence and structural analysis of the zeste locus of Drosophila melanogaster

    • Alka Mansukhani
    • Preethi H. Gunaratne
    • Michael L. Goldberg

    OriginalPaper Pages: 121 - 128

18. Cloning and transcription analysis of the entire glycerol utilization (gylABX) operon of Streptomyces coelicolor A3(2) and identification of a closely associated transcription unit

    • Colin P. Smith
    • Keith F. Chater

    OriginalPaper Pages: 129 - 137

19. Chromosome replication in Escherichia coli induced by oversupply of DnaA

    • Y. -C. Xu
    • H. Bremer

    OriginalPaper Pages: 138 - 142

20. Detection of a single-copy gene on plant chromosomes by in situ hybridization

    • Pung-Ling Huang
    • Klaus Hahlbrock
    • Imre E. Somssich

    OriginalPaper Pages: 143 - 147

21. Plasmid-borne resistance to arsenate, arsenite, cadmium, and chloramphenicol in a Rhodococcus species

    • Eric R. Dabbs
    • Gillian J. Sole

    OriginalPaper Pages: 148 - 154

22. Amplification of plasmid copy number by thymidine kinase expression in Saccharomyces cerevisiae

    • G. R. Zealey
    • A. R. Goodey
    • A. E. Wheals

    OriginalPaper Pages: 155 - 159

23. Gene-enzyme relationships of the purine biosynthetic pathway in Bacillus subtilis

    • Hans Henrik Saxild
    • Per Nygaard

    OriginalPaper Pages: 160 - 167

24. Regulation of the TRP4 gene of Saccharomyces cerevisiae at the transcriptional level and functional analysis of its promoter

    • Rolf Furter
    • Gerhard Braus
    • Ralf Hütter

    OriginalPaper Pages: 168 - 175

25. Sequence, expression and localization of the immunity protein for colicin B

    • Edgar Schramm
    • Tobias Ölschläger
    • Volkmar Braun

    OriginalPaper Pages: 176 - 182

26. ack::Mu d1-8 (Ap^r lac) operon fusions of Salmonella typhimurium LT2

    • H. S. Kwan
    • H. W. Chui
    • K. K. Wong

    Short Communications Pages: 183 - 185

27. Restriction and modification in Bacillus subtilis Marburg 168: Target sites and effects on plasmid transformation

    • S. Bron
    • L. Jannière
    • S. D. Ehrlich

    Short Communications Pages: 186 - 189

28. Erratum

    • Frederic Barras
    • Kerry K. Thurn
    • Arun K. Chatterjee

    Erratum Pages: 190 - 190