The articles in the present volume are by major contributors to our under standing of signaling pathways affecting protein synthesis. They focus pri marily on two extracellular anabolic signals, although others are included as well. Insulin is one of the best-studied extracellular regulators of protein syn thesis. Several of the known pathways for regulation of protein synthesis were elucidated using insulin-dependent systems. Regulation of protein synthesis by amino acids, by contrast, is an emerging field that has recently received a great deal of attention. The dual role of amino acids as...

This volume presents the response of the eukaryotic translational apparatus to cellular stress and apoptosis, including kinases activated through both the ERK and stress-activated pathways. It further explores two agents that inhibit protein synthesis, calcium and the immunosuppressant rapamycin. Six chapters written by leading experts in the field provide both new data and comprehensive literature reviews. Both the regulation of initiation and elongation are discussed, and the mechanisms of apoptosis are related to changes in the protein synthesis machinery.

Understanding how miRNAs post-transcriptionally regulate gene expression.- Translational Control of Endogenous MicroRNA Target Genes in C. elegans.- Translational inhibition by microRNAs in Plants.- Regulation of p27kip1 mRNA expression by microRNAs.- The Inhibitory Effect of apolipoprotein B mRNA-editing Enzyme Catalytic Polypeptide-like 3G (APOBEC3G) and Its Family Members on the Activity of Cellular MicroRNAs.- microRNA-mediated mRNA deadenylation and repression of protein synthesis in a mammalian cell-free system.- miRNA effects on mRNA closed-loop formation during translation...

This volume presents the response of the eukaryotic translational apparatus to cellular stress and apoptosis, including kinases activated through both the ERK and stress-activated pathways. It further explores two agents that inhibit protein synthesis, calcium and the immunosuppressant rapamycin. Six chapters written by leading experts in the field provide both new data and comprehensive literature reviews. Both the regulation of initiation and elongation are discussed, and the mechanisms of apoptosis are related to changes in the protein synthesis machinery.

An odd and unexpected finding was reported by the laboratory of Richard Jorgensen in 1990: expression of extra copies of the gene encoding chalone synthase in petunias turned off the endogenous chalone synthase gene. An observation that appeared totally unrelated was made by the laboratory of Victor Ambrose in 1993: a gene in Caenorhabditis elegans, lin-4, controlled the timing of larval development but did not encode a protein. Rather, it expressed two small RNAs that were complementary to the 3'-untranslated region of the lin-14 gene in a region that had previously been shown to repress...