Catálogo de publicaciones - revistas

<jats:p> Can you catch a new kind of sex life? Wasps can, according to new research on the speciation patterns of one family of asexually reproducing wasps and its bacterial parasite, <jats:italic>Wolbachia. Wolbachia</jats:italic> live in their hosts' egg cells and alter reproduction. And if a wasp picks up a <jats:italic>Wolbachia</jats:italic> infection from another wasp, it may be forever doomed to an asexual state. </jats:p>

<jats:p> Many signaling proteins, including the proto-oncogene Ras, require the covalent addition of a lipid chain for proper function. This prenylated protein is then earmarked for further proteolysis and methylation. In his Perspective, Gelb discusses two reports in this issue that illuminate how the lipid is initially attached to the protein [Park <jats:italic>et al</jats:italic> . ( <jats:related-article xmlns:xlink="http://www.w3.org/1999/xlink" ext-link-type="doi" page="1800" related-article-type="in-this-issue" vol="275" xlink:href="10.1126/science.275.5307.1800" xlink:type="simple">p. 1800</jats:related-article> )] and how the later proteolytic modifications are accomplished [Boyartchuk <jats:italic>et al</jats:italic> . ( <jats:related-article xmlns:xlink="http://www.w3.org/1999/xlink" ext-link-type="doi" page="1796" related-article-type="in-this-issue" vol="275" xlink:href="10.1126/science.275.5307.1796" xlink:type="simple">p. 1796</jats:related-article> )] </jats:p>

<jats:p> Emulsions and colloids are fundamentally interesting but also have technological importance in industrial applications. In his Perspective, Joanny [see also Poulin <jats:italic>et al</jats:italic> . ( <jats:related-article xmlns:xlink="http://www.w3.org/1999/xlink" ext-link-type="doi" page="1770" related-article-type="in-this-issue" vol="275" xlink:href="10.1126/science.275.5307.1770" xlink:type="simple">p. 1770</jats:related-article> )] discusses results reported in the same issue on a new kind of colloidal interaction observed when water droplets are dispersed in a liquid-crystal solvent. This liquid-crystal emulsion provides a way to understand the formation and stability of defects in complex fluids. </jats:p>

<jats:p> Three reports [Korinek <jats:italic>et al.</jats:italic> ( <jats:related-article xmlns:xlink="http://www.w3.org/1999/xlink" ext-link-type="doi" page="1784" related-article-type="in-this-issue" vol="275" xlink:href="10.1126/science.275.5307.1784" xlink:type="simple">p. 1784</jats:related-article> ), Morin <jats:italic>et al</jats:italic> . ( <jats:related-article xmlns:xlink="http://www.w3.org/1999/xlink" ext-link-type="doi" page="1787" related-article-type="in-this-issue" vol="275" xlink:href="10.1126/science.275.5307.1787" xlink:type="simple">p. 1787</jats:related-article> ), and Rubinfeld <jats:italic>et al</jats:italic> . ( <jats:related-article xmlns:xlink="http://www.w3.org/1999/xlink" ext-link-type="doi" page="1790" related-article-type="in-this-issue" vol="275" xlink:href="10.1126/science.275.5307.1790" xlink:type="simple">p. 1790</jats:related-article> )] in this issue provide new evidence about the molecular pathway that goes awry in colon cancer and melanoma. The protein β-catenin, previously known to be associated with the colon-cancer-causing adenomatous polyposis coli protein, is shown to be an oncogene in its own right. In his Perspective, Peifer discusses the normal functions of these proteins in mammals and flies and how their dysfunction can lead to cancer. </jats:p>