Meine Merkliste
my.bionity.com  
Login  

18.881 Aktuelle Fachpublikationen von Proceedings of the National Academy of Sciences

rss

Spectrum of power laws for curved hand movements [Neuroscience]

21.07.2015 | Dongsung Huh; Terrence J. Sejnowski, Proceedings of the National Academy of Sciences current issue, 2015

In a planar free-hand drawing of an ellipse, the speed of movement is proportional to the −1/3 power of the local curvature, which is widely thought to hold for general curved shapes. We investigated this phenomenon for general curved hand movements by analyzing an optimal control model that ...

mehr

Suppression of conformational heterogeneity at a protein-protein interface [Biophysics and Computational Biology]

21.07.2015 | Lindsay N. Deis; Qinglin Wu; You Wang; Yang Qi; Kyle G. Daniels; Pei Zhou; Terrence G. Oas, Proceedings of the National Academy of Sciences current issue, 2015

Staphylococcal protein A (SpA) is an important virulence factor from Staphylococcus aureus responsible for the bacterium’s evasion of the host immune system. SpA includes five small three-helix–bundle domains that can each bind with high affinity to many host proteins such as antibodies. The ...

mehr

Graphene electrostatic microphone and ultrasonic radio [Applied Physical Sciences]

21.07.2015 | Qin Zhou; Jinglin Zheng; Seita Onishi; M. F. Crommie; Alex K. Zettl, Proceedings of the National Academy of Sciences current issue, 2015

We present a graphene-based wideband microphone and a related ultrasonic radio that can be used for wireless communication. It is shown that graphene-based acoustic transmitters and receivers have a wide bandwidth, from the audible region (20∼20 kHz) to the ultrasonic region (20 kHz to at least ...

mehr

A novel mycovirus from Aspergillus fumigatus contains four unique dsRNAs as its genome and is infectious as dsRNA [Microbiology]

21.07.2015 | Lakkhana Kanhayuwa; Ioly Kotta-Loizou; Selin Özkan; A. Patrick Gunning; Robert H. A. Coutts, Proceedings of the National Academy of Sciences current issue, 2015

We report the discovery and characterization of a double-stranded RNA (dsRNA) mycovirus isolated from the human pathogenic fungus Aspergillus fumigatus, Aspergillus fumigatus tetramycovirus-1 (AfuTmV-1), which reveals several unique features not found previously in positive-strand RNA viruses, ...

mehr

Evolutionary perspectives on clonal reproduction in vertebrate animals [Colloquium Paper]

21.07.2015 | John C. Avise, Proceedings of the National Academy of Sciences current issue, 2015

A synopsis is provided of different expressions of whole-animal vertebrate clonality (asexual organismal-level reproduction), both in the laboratory and in nature. For vertebrate taxa, such clonal phenomena include the following: human-mediated cloning via artificial nuclear transfer; ...

mehr

Correction for Balakrishnan et al., Novel pathways for fuels and lubricants from biomass optimized using life-cycle greenhouse gas assessment [Correction]

21.07.2015 | Proceedings of the National Academy of Sciences current issue, 2015

CHEMISTRY, SUSTAINABILITY SCIENCE Correction for “Novel pathways for fuels and lubricants from biomass optimized using life-cycle greenhouse gas assessment,” by Madhesan Balakrishnan, Eric R. Sacia, Sanil Sreekumar, Gorkem Gunbas, Amit A. Gokhale, Corinne D. Scown, F. Dean Toste, and Alexis T. ...

mehr

Trp triad-dependent rapid photoreduction is not required for the function of Arabidopsis CRY1 [Plant Biology]

21.07.2015 | Jie Gao; Xu Wang; Meng Zhang; Mingdi Bian; Weixian Deng; Zecheng Zuo; Zhenming Yang; Dongping Zhong; Chentao Lin, Proceedings of the National Academy of Sciences current issue, 2015

Cryptochromes in different evolutionary lineages act as either photoreceptors or light-independent transcription repressors. The flavin cofactor of both types of cryptochromes can be photoreduced in vitro by electron transportation via three evolutionarily conserved tryptophan residues known as ...

mehr

Behavioral consequences of selective damage to frontal pole and posterior cingulate cortices [Neuroscience]

21.07.2015 | Farshad A. Mansouri; Mark J. Buckley; Majid Mahboubi; Keiji Tanaka, Proceedings of the National Academy of Sciences current issue, 2015

Frontal pole cortex (FPC) and posterior cingulate cortex (PCC) have close neuroanatomical connections, and imaging studies have shown coactivation or codeactivation of these brain regions during performance of certain tasks. However, they are among the least well-understood regions of the primate ...

mehr

Molecular basis for the specific recognition of the metazoan cyclic GMP-AMP by the innate immune adaptor protein STING [Immunology and Inflammation]

21.07.2015 | Heping Shi; Jiaxi Wu; Zhijian J. Chen; Chuo Chen, Proceedings of the National Academy of Sciences current issue, 2015

Cyclic GMP-AMP containing a unique combination of mixed phosphodiester linkages (2′3′-cGAMP) is an endogenous second messenger molecule that activates the type-I IFN pathway upon binding to the homodimer of the adaptor protein STING on the surface of endoplasmic reticulum membrane. However, the ...

mehr

Correlation does not equal causation: Questioning the Great Cahokia Flood [Physical Sciences]

21.07.2015 | Sarah E. Baires; Melissa R. Baltus; Meghan E. Buchanan, Proceedings of the National Academy of Sciences current issue, 2015

Munoz et al. (1) present an argument for Cahokia’s demise focusing on a massive flood event ca. A.D. 1200. Although we recognize that a flood event may have occurred, we do not agree with their hypothesis that this event (i) caused the collapse of the largest Pre-Columbian city north of...

mehr

Seite 2 von 1889
Suche per e-Mail abonnieren

Sie erhalten passend zu Ihrer Suche die neusten Suchergebnisse per E-Mail. Dieser Service ist für Sie kostenlos und kann jederzeit abbestellt werden.

Ihr Bowser ist nicht aktuell. Microsoft Internet Explorer 6.0 unterstützt einige Funktionen auf Chemie.DE nicht.