1. Direct demonstration of a complementarity between mRNA and double-stranded sequences of pre-mRNA

   • A. P. Ryskov
   • O. V. Tokarskaya
   • G. P. Georgiev

   OriginalPaper Pages: 353 - 361

2. The nature of the differential inhibition of polyphenylalanine synthesis in extracts from Artemia salina and rabbit reticulocytes by the Phytolacca americana protein

   • Jerry P. Suits
   • James D. Irvin

   OriginalPaper Pages: 363 - 367

3. The properties of oligonucleotide fragments containing the triphosphorylated 5′-termini of nuclear pre-mRNA from Ehrlich ascites carcinoma cells

   • G. Bajszár
   • O. P. Samarina
   • G. P. Georgiev

   OriginalPaper Pages: 369 - 377

4. Studies on two groups of aminoacyl-tRNA synthetases from rat liver

   • W. S. Bont
   • J. Geels
   • G. Rezelman

   OriginalPaper Pages: 379 - 384

5. Size heterogeneity of the structural units of brain nuclear ribonucleoprotein particles

   • J. Stévenin
   • G. Devilliers
   • M. Jacob

   OriginalPaper Pages: 385 - 391

6. Topographical analysis of yeast ribosomal DNA by cleavage with restriction endonucleases

   • J. H. Meyerink
   • J. Retèl
   • F. Heidekamp

   OriginalPaper Pages: 393 - 400

7. A form of elongation factor G insensitive to N-ethyl-maleimide

   • Tomas Girbes
   • David Vazquez
   • Juan Modolell

   OriginalPaper Pages: 401 - 406

8. Synthesis of human Placental Lactogen in Xenopus oocytes

   • J. Mous
   • B. Peeters
   • W. Rombauts

   OriginalPaper Pages: 407 - 412

9. A code controlling specific binding of regulatory proteins to DNA

   • A. V. Gursky
   • V. G. Tumanyan
   • B. P. Gottikh

   OriginalPaper Pages: 413 - 425

10. A model for the binding of lac repressor to the lac operator

    • G. V. Gursky
    • V. G. Tumanyan
    • B. P. Gottikh

    OriginalPaper Pages: 427 - 434

11. Book reviews

    • W. W. de Jong
    • B. G. A. ter Haar

    BookReview Pages: 435 - 436

12. Announcement

    Announcement Pages: 437 - 437