1. Open reading frames in the antisense strands of genes coding for glycolytic enzymes in Saccharomyces cerevisiae

   • E. Boles
   • F. K. Zimmermann

   Original Paper Pages: 363 - 368

2. Evolutionary divergence of human chromosome 9 as revealed by the position of the ABL protooncogene in higher primates

   • Ram S. Verma
   • Sunny Luke

   Original Paper Pages: 369 - 373

3. Regulation of replication of plasmid pBR322 in amino acid-starved Escherichia coli strains

   • A. Herman
   • A. Węgrzyn
   • G. Węgrzyn

   Original Paper Pages: 374 - 378

4. Requirement of the Pro-Cys-His-Arg sequence for O⁶-methylguanine-DNA methyltransferase activity revealed by saturation mutagenesis with negative and positive screening

   • K. Ibara
   • H. Kawate
   • M. Sekiguchi

   Original Paper Pages: 379 - 389

5. Epigenetic variants of a transgenic petunia line show hypermethylation in transgene DNA: an indication for specific recognition of foreign DNA in transgenic plants

   • P. Meyer
   • I. Heidmann

   Original Paper Pages: 390 - 399

6. ADP-glucose pyrophosphorylase in shrunken-2 and brittle-2 mutants of maize

   • M. J. Giroux
   • L. C. Hannah

   Original Paper Pages: 400 - 408

7. The catalytic domain of Escherichia coli K-12 adenylate cyclase as revealed by deletion analysis of the cya gene

   • Martine Crasnier
   • Valérie Dumay
   • Antoine Danchin

   Original Paper Pages: 409 - 416

8. HIV-1 integrase blocks infection of bacteria by single-stranded DNA and RNA bacteriophages

   • Ruth Levitz
   • Karl Drlica
   • Ellen Murphy

   Original Paper Pages: 417 - 425

9. DS read-out transcription in transgenic tomato plants

   • George N. Rudenko
   • H. John J. Nijkamp
   • Jacques Hille

   Original Paper Pages: 426 - 433

10. A ribosomal frameshifting error during translation of the argl mRNA of Escherichla coli

    • Changwei Fu
    • Jack Parker

    Original Paper Pages: 434 - 441

11. Plant ribosomal DNA external spacer binding factors: a novel protein binds specifically to a sequence close to the primary pre-rRNA processing site

    • M. Echeverria
    • P. Penon
    • M. Delseny

    Original Paper Pages: 442 - 452

12. Gene inactivation in Drosophiia mediated by the Polycomb gene product or by position-effect variegation does not involve major changes in the accessibility of the chromatin fibre

    • J. Schloßherr
    • H. Eggert
    • R. S. Jack

    Original Paper Pages: 453 - 462

13. Molecular cloning and sequence analysis of an Azospirilium brasilense indole-3-pyruvate decarboxylase gene

    • Antonia Costacurta
    • Veerle Keijers
    • Jos Vanderleyden

    Original Paper Pages: 463 - 472

14. The mitochondrial genome of yeast Hansenula wingei encodes NADH dehydrogenase subunit genes ND4L and ND5

    • K. Okamoto
    • T. Sekito
    • K. Yoshida

    Short Communication Pages: 473 - 476

15. Mapping of transcriptional start sites of the cea and cei genes of the ColE7 operon

    • B. -W. Soong
    • S. -Y. Hsieh
    • K. -F. Chak

    Short Communication Pages: 477 - 481

16. Cloning and characterization of a secY homolog from Chlamydia trachomatis

    • L. Gu
    • M. Remacha
    • R. Kaul

    Short Communication Pages: 482 - 487