Prions are a general name for a variety of protein aggregation phenomena. Recent findings in yeast indicate that prions may be much more common than previously realized. On pages 125–133, Susan Lindquist and colleagues describe recent data that show prions from a number of different yeast proteins can alter the relationship between genotype and phenotype in a heritable way that diversifies clonal populations. The authors argue that these qualities allow prions to act as bet-hedging devices that facilitate yeast's adaptation to stressful environments, and may speed the evolution of new traits. Cover design by Randal Halfmann and Susan Lindquist.

Myosin recruitment during embryonic cytokinesis in C. elegans. This movie is from a review article by George von Dassow that is part of a special feature on cytokinesis in April's issue of Trends in Cell Biology.
For the entire table of contents, click here.
Integration of Developmental Signaling Pathways
Keystone Symposium, Victoria, British Columbia
March 23 - 28, 2010
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Trends in Cell Biology, published by Cell Press, is a leading review journal in molecular and cell biology. Its review articles monitor the breadth and depth of current research in cell biology, and objectively chronicle recent and important developments in newly emerging or rapidly progressing fields. In addition to Reviews, Trends in Cell Biology publishes Opinion articles, which provide original perspectives on controversial topics and aim to stimulate new research or debate on innovative ideas. An occasionally used article format is the Research Focus, which aims to briefly highlight topical issues and recent research papers of particular note, explaining their significance for a wide audience.
We are marking the 1-year anniversary of this well-deserved recognition with a special issue of Trends in Cell Biology devoted to state-of-the-art imaging approaches. Through a group of 12 topical reviews by experts in the field, we provide a snapshot of some of the most exciting work being done in cell biology using GFP, its relatives and derivatives, and other innovative tools and techniques.
| The centrosome is the microtubule-organising centre of metazoan cells and has a vital role in spindle formation and cell division, and cell migration and polarization. Much exciting research is in progress to determine the molecular mechanisms by which this tiny organelle carries out its many functions in the cell. |
These are the five most downloaded papers for the 30 days preceding March 10, 2010. See full list of most read articles