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17,663 Newest Publications in proceedings of the national academy of sciences current issue

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Visible photoelectrochemical water splitting into H2 and O2 in a dye-sensitized photoelectrosynthesis cell [Chemistry]

12-May-2015 | Leila Alibabaei; Benjamin D. Sherman; Michael R. Norris; M. Kyle Brennaman; Thomas J. Meyer, Proceedings of the National Academy of Sciences current issue, 2015

A hybrid strategy for solar water splitting is exploited here based on a dye-sensitized photoelectrosynthesis cell (DSPEC) with a mesoporous SnO2/TiO2 core/shell nanostructured electrode derivatized with a surface-bound Ru(II) polypyridyl-based chromophore–catalyst assembly. The assembly, ...

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Molecular blueprint of allosteric binding sites in a homologue of the agonist-binding domain of the {alpha}7 nicotinic acetylcholine receptor [Pharmacology]

12-May-2015 | Radovan Spurny; Sarah Debaveye; Ana Farinha; Ken Veys; Ann M. Vos; Thomas Gossas; John Atack; Sonia Bertrand; Daniel ..., Proceedings of the National Academy of Sciences current issue, 2015

The α7 nicotinic acetylcholine receptor (nAChR) belongs to the family of pentameric ligand-gated ion channels and is involved in fast synaptic signaling. In this study, we take advantage of a recently identified chimera of the extracellular domain of the native α7 nicotinic acetylcholine receptor ...

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Biological evidence supports an early and complex emergence of the Isthmus of Panama [Evolution]

12-May-2015 | Christine D. Bacon; Daniele Silvestro; Carlos Jaramillo; Brian Tilston Smith; Prosanta Chakrabarty; Alexandre Antonelli, Proceedings of the National Academy of Sciences current issue, 2015

The linking of North and South America by the Isthmus of Panama had major impacts on global climate, oceanic and atmospheric currents, and biodiversity, yet the timing of this critical event remains contentious. The Isthmus is traditionally understood to have fully closed by ca. 3.5 million years ...

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A {Omega}XaV motif in the Rift Valley fever virus NSs protein is essential for degrading p62, forming nuclear filaments and virulence [Biochemistry]

12-May-2015 | Normand Cyr; Cynthia de la Fuente; Lauriane Lecoq; Irene Guendel; Philippe R. Chabot; Kylene Kehn-Hall; James G. Omi ..., Proceedings of the National Academy of Sciences current issue, 2015

Rift Valley fever virus (RVFV) is a single-stranded RNA virus capable of inducing fatal hemorrhagic fever in humans. A key component of RVFV virulence is its ability to form nuclear filaments through interactions between the viral nonstructural protein NSs and the host general transcription ...

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Contribution of air conditioning adoption to future energy use under global warming [Economic Sciences]

12-May-2015 | Lucas W. Davis; Paul J. Gertler, Proceedings of the National Academy of Sciences current issue, 2015

As household incomes rise around the world and global temperatures go up, the use of air conditioning is poised to increase dramatically. Air conditioning growth is expected to be particularly strong in middle-income countries, but direct empirical evidence is scarce. In this paper we use ...

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Soundscapes offer unique opportunities for studies of fish communities [Ecology]

12-May-2015 | Philip A. Hastings; Ana Širović, Proceedings of the National Academy of Sciences current issue, 2015

Resource partitioning is a fundamental ecological concept in which cooccurring species reduce competition by using or specializing on different resources (1). It is widely accepted as a mechanism permitting similar species to cooccur, leading to increased levels of species diversity (2). ...

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Reply to van de Sandt and Rimmelzwaan: Matching epitope display with functional avidity [Biological Sciences]

12-May-2015 | Derin B. Keskin; Bruce R. Reinhold; Guang Lan Zhang; Alexander R. Ivanov; Barry L. Karger; Ellis L. Reinherz, Proceedings of the National Academy of Sciences current issue, 2015

We appreciate the comments of van de Sandt and Rimmelzwaan (1) on our paper (2), as well as the opportunity to respond. First, we agree that in Berkhoff et al. (3) single alanine replacements resulted in reduced kinetics of viral replication. Nonetheless, to claim “a reduction of progeny virus ...

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Nonsense suppression in archaea [Biochemistry]

12-May-2015 | Arpita Bhattacharya; Caroline Köhrer; Debabrata Mandal; Uttam L. RajBhandary, Proceedings of the National Academy of Sciences current issue, 2015

Bacterial strains carrying nonsense suppressor tRNA genes played a crucial role in early work on bacterial and bacterial viral genetics. In eukaryotes as well, suppressor tRNAs have played important roles in the genetic analysis of yeast and worms. Surprisingly, little is known about genetic ...

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Inverted formin 2 in focal adhesions promotes dorsal stress fiber and fibrillar adhesion formation to drive extracellular matrix assembly [Cell Biology]

12-May-2015 | Colleen T. Skau; Sergey V. Plotnikov; Andrew D. Doyle; Clare M. Waterman, Proceedings of the National Academy of Sciences current issue, 2015

Actin filaments and integrin-based focal adhesions (FAs) form integrated systems that mediate dynamic cell interactions with their environment or other cells during migration, the immune response, and tissue morphogenesis. How adhesion-associated actin structures obtain their functional ...

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Amplified Arctic warming by phytoplankton under greenhouse warming [Earth, Atmospheric, and Planetary Sciences]

12-May-2015 | Jong-Yeon Park; Jong-Seong Kug; Jürgen Bader; Rebecca Rolph; Minho Kwon, Proceedings of the National Academy of Sciences current issue, 2015

Phytoplankton have attracted increasing attention in climate science due to their impacts on climate systems. A new generation of climate models can now provide estimates of future climate change, considering the biological feedbacks through the development of the coupled physical–ecosystem ...

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