Science: Current Issue / Novinky odjinud / drogy-info.cz

[Podcast] Science Podcast

The show includes a special show exploring human conflict, including strife among our primate ancestors, the biological underpinnings of racism, and the fundamentals of "peace systems."

http://www.sciencemag.org/content/336/6083/938.2.full?rss=1

New Products

A weekly roundup of information on newly offered instrumentation, apparatus, and laboratory materials of potential interest to researchers.

http://www.sciencemag.org/content/336/6083/938.1.full?rss=1

[Report] AID-Driven Deletion Causes Immunoglobulin Heavy Chain Locus Suicide Recombination in B Cells

Recombination-induced deletion of the immunoglobulin heavy chain gene in activated B cells may influence B cell homeostasis.Authors: Sophie Péron, Brice Laffleur, Nicolas Denis-Lagache, Jeanne Cook-Moreau, Aurélien Tinguely, Laurent Delpy, Yves Denizot, Eric Pinaud, Michel Cogné

http://www.sciencemag.org/content/336/6083/931.full?rss=1

[Report] Quantitative Sequencing of 5-Methylcytosine and 5-Hydroxymethylcytosine at Single-Base Resolution

A sequencing method can discriminate epigenetically modified cytosine nucleotides within embryonic stem cell DNA.Authors: Michael J. Booth, Miguel R. Branco, Gabriella Ficz, David Oxley, Felix Krueger, Wolf Reik, Shankar Balasubramanian

http://www.sciencemag.org/content/336/6083/934.full?rss=1

[Report] Multiple Spectral Inputs Improve Motion Discrimination in the Drosophila Visual System

Fly photoreceptors that detect colors also contribute information to the processing of motion.Authors: Trevor J. Wardill, Olivier List, Xiaofeng Li, Sidhartha Dongre, Marie McCulloch, Chun-Yuan Ting, Cahir J. O’Kane, Shiming Tang, Chi-Hon Lee, Roger C. Hardie, Mikko Juusola

http://www.sciencemag.org/content/336/6083/925.full?rss=1

[Report] Aerobic Microbial Respiration in 86-Million-Year-Old Deep-Sea Red Clay

Microbes in Pacific sediments grow very, very slowly.Authors: Hans Røy, Jens Kallmeyer, Rishi Ram Adhikari, Robert Pockalny, Bo Barker Jørgensen, Steven D’Hondt

http://www.sciencemag.org/content/336/6083/922.full?rss=1

[Report] The Ancient Drug Salicylate Directly Activates AMP-Activated Protein Kinase

A possible molecular mechanism of action for a metabolite of aspirin is described.Authors: Simon A. Hawley, Morgan D. Fullerton, Fiona A. Ross, Jonathan D. Schertzer, Cyrille Chevtzoff, Katherine J. Walker, Mark W. Peggie, Darya Zibrova, Kevin A. Green, Kirsty J. Mustard, Bruce E. Kemp, Kei Sakamoto, Gregory R. Steinberg, D. Grahame Hardie

http://www.sciencemag.org/content/336/6083/918.full?rss=1

[Report] How Hibernation Factors RMF, HPF, and YfiA Turn Off Protein Synthesis

Three crystal structures show why bacteria stop making proteins when they enter the stationary phase.Authors: Yury S. Polikanov, Gregor M. Blaha, Thomas A. Steitz

http://www.sciencemag.org/content/336/6083/915.full?rss=1

[Report] Cost-Benefit Tradeoffs in Engineered lac Operons

A close look at a paradigmatic system accounts for the costs due to protein activity versus expression and folding.Authors: Matt Eames, Tanja Kortemme

http://www.sciencemag.org/content/336/6083/911.full?rss=1

[Report] Randomized Government Safety Inspections Reduce Worker Injuries with No Detectable Job Loss

It may be feasible to achieve employee safety while keeping businesses viable.Authors: David I. Levine, Michael W. Toffel, Matthew S. Johnson

http://www.sciencemag.org/content/336/6083/907.full?rss=1

[Report] Conspecific Negative Density Dependence and Forest Diversity

Tree seedlings have a harder time establishing themselves in forests containing many adults of the same species.Authors: Daniel J. Johnson, Wesley T. Beaulieu, James D. Bever, Keith Clay

http://www.sciencemag.org/content/336/6083/904.full?rss=1

[Report] Observation of 239Pu Nuclear Magnetic Resonance

The long-sought magnetic resonance signal of the plutonium nucleus has been detected in a sample of solid plutonium dioxide.Authors: H. Yasuoka, G. Koutroulakis, H. Chudo, S. Richmond, D. K. Veirs, A. I. Smith, E. D. Bauer, J. D. Thompson, G. D. Jarvinen, D. L. Clark

http://www.sciencemag.org/content/336/6083/901.full?rss=1

[Report] Structures of Cage, Prism, and Book Isomers of Water Hexamer from Broadband Rotational Spectroscopy

Observing three distinct water clusters in the same experiment resolves long-standing questions about their relative stabilities.Authors: Cristóbal Pérez, Matt T. Muckle, Daniel P. Zaleski, Nathan A. Seifert, Berhane Temelso, George C. Shields, Zbigniew Kisiel, Brooks H. Pate

http://www.sciencemag.org/content/336/6083/897.full?rss=1

[Report] The Active Site of Methanol Synthesis over Cu/ZnO/Al2O3 Industrial Catalysts

Catalysis is favored by stepped copper nanoparticles decorated with zinc oxide, which promotes stronger intermediate binding.Authors: Malte Behrens, Felix Studt, Igor Kasatkin, Stefanie Kühl, Michael Hävecker, Frank Abild-Pedersen, Stefan Zander, Frank Girgsdies, Patrick Kurr, Benjamin-Louis Kniep, Michael Tovar, Richard W. Fischer, Jens K. Nørskov, Robert Schlögl

http://www.sciencemag.org/content/336/6083/893.full?rss=1

[Report] Water-Mediated Proton Hopping on an Iron Oxide Surface

The presence of adsorbed water enhances proton diffusion, likely through a hydronium ion transition state.Authors: Lindsay R. Merte, Guowen Peng, Ralf Bechstein, Felix Rieboldt, Carrie A. Farberow, Lars C. Grabow, Wilhelmine Kudernatsch, Stefan Wendt, Erik Lægsgaard, Manos Mavrikakis, Flemming Besenbacher

http://www.sciencemag.org/content/336/6083/889.full?rss=1

[Report] Strongly Interacting Rydberg Excitations of a Cold Atomic Gas

Illumination of an ensemble of cold rubidium atoms ultimately leads to high-level excitation of just a single atom.Authors: Y. O. Dudin, A. Kuzmich

http://www.sciencemag.org/content/336/6083/887.full?rss=1

[Brevia] Evolutionary Diversity of the Mitochondrial Calcium Uniporter

Phylogenetic analysis of the mitochondrial calcium transporter shows that it was a feature of early eukaryotes.Authors: Alexander G. Bick, Sarah E. Calvo, Vamsi K. Mootha

http://www.sciencemag.org/content/336/6083/886.full?rss=1