Catálogo de publicaciones - revistas

<jats:p> A tumor suppressor protein may function in multiple locations inside and outside the originating cell. <jats:named-content content-type="related-content"> [Also see Reports by <jats:related-article xmlns:xlink="http://www.w3.org/1999/xlink" ext-link-type="doi" issue="6144" page="395" related-article-type="in-this-issue" vol="341" xlink:href="10.1126/science.1236188"> Bassi <jats:italic>et al.</jats:italic> </jats:related-article> and <jats:related-article xmlns:xlink="http://www.w3.org/1999/xlink" ext-link-type="doi" issue="6144" page="399" related-article-type="in-this-issue" vol="341" xlink:href="10.1126/science.1234907"> Hopkins <jats:italic>et al.</jats:italic> </jats:related-article> ] </jats:named-content> </jats:p>

<jats:p> A general strategy for synthesizing asymmetrically branched carbohydrates will help to elucidate their biological functions. <jats:named-content content-type="related-content"> [Also see Report by <jats:related-article xmlns:xlink="http://www.w3.org/1999/xlink" ext-link-type="doi" issue="6144" page="379" related-article-type="in-this-issue" vol="341" xlink:href="10.1126/science.1236231"> Wang <jats:italic>et al.</jats:italic> </jats:related-article> ] </jats:named-content> </jats:p>

<jats:p>The cells in our body do not all contain identical genomes, which has implications for health and disease.</jats:p>

<jats:p>Exploring Databases, an IBI prize–winning module, enables students to conduct epidemiological research on smoking behavior using a database.</jats:p>

<jats:p> A monthly roundup of recent news and projects of <jats:italic>Science</jats:italic> 's publisher, the American Association for the Advancement of Science. </jats:p>

<jats:title>Neutron Star Measurements</jats:title> <jats:p> Neutron stars are one of the densest manifestations of matter in the universe. <jats:bold>Yagi and Yunes</jats:bold> (p. <jats:related-article xmlns:xlink="http://www.w3.org/1999/xlink" ext-link-type="doi" issue="6144" page="365" related-article-type="in-this-issue" vol="341" xlink:href="10.1126/science.1236462">365</jats:related-article> ) examined the moment of inertia of neutron stars, which determines how fast they can spin, and the quadrupole moment and tidal Love number, which determine how much they can be deformed. The findings suggest that these three quantities obey universal relationships that are independent of the internal structure of the stars, implying that measurements of one of the three could accurately predict the other two. </jats:p>

<jats:title>Holographic Turbulence</jats:title> <jats:p> Turbulence in a superfluid presents an even more challenging theoretical problem than classical turbulence. <jats:bold> Chesler <jats:italic>et al.</jats:italic> </jats:bold> (p. <jats:related-article xmlns:xlink="http://www.w3.org/1999/xlink" ext-link-type="doi" issue="6144" page="368" related-article-type="in-this-issue" vol="341" xlink:href="10.1126/science.1233529">368</jats:related-article> ) studied simulated superfluid turbulence using holographic duality. The direction of the energy flow in a two-dimensional superfluid was opposite to that in classical fluids—the energy injected at long length scales dissipated at short length scales through the vortices that form in a turbulent superfluid. </jats:p>

<jats:title>Rust Resistance</jats:title> <jats:p> The rusting of iron and steel can be prevented through the addition of 11% or more chromium. The addition of molybdenum can enhance the corrosion resistance, with a complex interplay between the Cr and Mo atoms. However, if chemical variations exist, corrosion can still occur in localized regions or if the surface layer is mechanically abraded. <jats:bold> Duarte <jats:italic>et al.</jats:italic> </jats:bold> (p. <jats:related-article xmlns:xlink="http://www.w3.org/1999/xlink" ext-link-type="doi" issue="6144" page="372" related-article-type="in-this-issue" vol="341" xlink:href="10.1126/science.1230081">372</jats:related-article> ) studied the corrosive failure of an iron-based glassy alloy. A combination of atom probe tomography, electron microscopy, and x-ray diffraction was used to build up a near atomistic picture of local variations in the metal as it was heated and allowed to crystallize, and the impact these processes have on the corrosion resistance. </jats:p>

<jats:title>Order, Order</jats:title> <jats:p> The structure of glassy materials, which are known to have short-range order but no long-range pattern, continues to be a puzzle. One current theory is that some glassy materials possess icosahedral ordering, a motif that cannot show translational periodicity. <jats:bold> Hirata <jats:italic>et al.</jats:italic> </jats:bold> (p. <jats:related-article xmlns:xlink="http://www.w3.org/1999/xlink" ext-link-type="doi" issue="6144" page="376" related-article-type="in-this-issue" vol="341" xlink:href="10.1126/science.1232450">376</jats:related-article> , published online 11 July) obtained diffraction patterns from subnanometer volumes in a metallic glass, which show some, but not all, of the expected features of an icosahedron. Simulations suggest that the patterns arise from icosahedrons distorted to include features of the face-centered cubic structure. This observation is different from the predictions of molecular dynamics simulations and provides pivotal information in understanding the competition between the formation of the globally inexpensive long-range order and the locally inexpensive short-range order. </jats:p>

<jats:title>Sweet Variety</jats:title> <jats:p> Proteins fold into a great variety of shapes—but, topologically, they always start as a more or less straight line of linked amino acids. In contrast, carbohydrates manifest a range of structures in which the sugar building blocks connect through multiple branch points. <jats:bold> Wang <jats:italic>et al.</jats:italic> </jats:bold> (p. <jats:related-article xmlns:xlink="http://www.w3.org/1999/xlink" ext-link-type="doi" issue="6144" page="379" related-article-type="in-this-issue" vol="341" xlink:href="10.1126/science.1236231">379</jats:related-article> , published online 26 July; see the Perspective by <jats:related-article xmlns:xlink="http://www.w3.org/1999/xlink" ext-link-type="doi" issue="6144" page="357" related-article-type="in-this-issue" vol="341" xlink:href="10.1126/science.1241788"> <jats:bold>Kiessling and Kraft</jats:bold> </jats:related-article> ) designed a versatile precursor that could be transformed into many different branched glycans with distinct building blocks along each branch. </jats:p>