1. Dynamic organization of the β-heterochromatin in the Drosophila melanogaster polytene X chromosome

   • D. E. Koryakov
   • A. A. Alekseyenko
   • I. F. Zhimulev

   ORIGINAL PAPER Pages: 503 - 509

2. Molecular characterization of HymA, an evolutionarily highly conserved and highly expressed protein of Aspergillus nidulans

   • M. Karos
   • R. Fischer

   ORIGINAL PAPER Pages: 510 - 521

3. The S / M checkpoint at 37°C and the recovery of viability of the mutant polδts3 require the crb2 ⁺ /rhp9 ⁺ gene in fission yeast

   • M. Grenon
   • J. Tillit
   • S. Francesconi

   ORIGINAL PAPER Pages: 522 - 534

4. A human gene, hSGT1, can substitute for GCR2, which encodes a general regulatory factor of glycolytic gene expression in Saccharomyces cerevisiae

   • T. Sato
   • Y. Jigami
   • H. Uemura

   ORIGINAL PAPER Pages: 535 - 540

5. The Saccharomyces cerevisiae protein YJR043C (Pol32) interacts with the catalytic subunit of DNA polymerase α and is required for cell cycle progression in G2 / M

   • M. E. Huang
   • B. Le Douarin
   • F. Galibert

   ORIGINAL PAPER Pages: 541 - 550

6. The Saccharomyces cerevisiae RAD54 gene is important but not essential for natural homothallic mating-type switching

   • J. Schmuckli-Maurer
   • W.-D. Heyer

   Original Paper Pages: 551 - 558

7. The protease activity of a calpain-like cysteine protease in Saccharomyces cerevisiae is required for alkaline adaptation and sporulation

   • E. Futai
   • T. Maeda
   • K. Suzuki

   ORIGINAL PAPER Pages: 559 - 568

8. Directional cloning of native PCR products with preformed sticky ends (Autosticky PCR)

   • J. Gál
   • R. Schnell
   • M. Kálmán

   ORIGINAL PAPER Pages: 569 - 573

9. Gene stability in transgenic aspen (Populus). I. Flanking DNA sequences and T-DNA structure

   • M. Fladung

   Original Paper Pages: 574 - 581

10. Gene silencing results in instability of antibody production in transgenic plants

    • M. De Neve
    • S. De Buck
    • A. Depicker

    ORIGINAL PAPER Pages: 582 - 592

11. Identification and characterization of novel retrotransposons of the gypsy type in rice

    • N. Kumekawa
    • H. Ohtsubo
    • E. Ohtsubo

    ORIGINAL PAPER Pages: 593 - 602

12. Either of the chromosomal tuf genes of E. coli K-12 can be deleted without loss of cell viability

    • A.-M. Zuurmond
    • A.-K. Rundlöf
    • B. Kraal

    ORIGINAL PAPER Pages: 603 - 607