1. Oligomerization of negatively-charged amino acids by carbonyldiimidazole

   • Aubrey R. Hill Jr.
   • Leslie E. Orgel

   OriginalPaper Pages: 539 - 545

2. Simultaneous formation of peptides and nucleotides from n-phosphothreonine

   • Weihua Zhou
   • Young Ju
   • Guoan Luo

   OriginalPaper Pages: 547 - 560

3. 2-aminopropionitrile polymer. I. The hydrolyzate of the basic fraction

   • Shiro Morimoto
   • Katsuhiro Kawashiro
   • Akihiro Ohsaki

   OriginalPaper Pages: 561 - 587

4. Theβ-sheets of proteins, the biosynthetic relationships between amino acids, and the origin of the genetic code

   • Massimo Di Giulio

   OriginalPaper Pages: 589 - 609

5. Book review

   • A. G. Cairns-Smith

   BookReview Pages: 611 - 613