Ribosome-Catalyzed Peptide-bond Formation, K.R. Lieberman and A.E. Dahlberg. Promotion and Regulation of Ribosomal Transcription in Eukaryotes by RNA Polymerase I, T. Moss and V.Y. Stefanovsky. Targeting and Regulation of Immunoglobulin Gene Somatic Hypermutation and Isotype Switch Recombination, M. Hengstschläger, N. Maizels, and H. Leung. Capping Enzyme in Eukaryotic mRNA Synthesis, S. Schuman. Rearrangement of snRNA Structure During Assembly and Function of the Spliceosome, M. Ares, Jr. and B. Weiser. Transcriptional Control of the Human Apolipoprotein B Gene in Cell Culture and in Transgenic Animals, B. Levy-Wilson. Early Growth Response Protein 1 (Egr-1): Prototype of a Zinc-finger Family of Transcription Factors, A. Gashler and V.P. Sukhatme. Two New Collagen Subgroups: Membrane-associated Collagens and Types XV and XVIII, T. Pihlajaniemi and M. Rehn. Genetic Dissection of Synthesis and Function of Modified Nucleosides in Bacterial Transfer RNA, G.R. Bjork. References. Index.