My watch list
my.chemeurope.com  
Login  

360 Newest Publications in proceedings of the national academy of sciences current issue

rss
matching the following criteria

Anomalous scaling law of strength and toughness of cellulose nanopaper [Engineering]

21-Jul-2015 | Hongli Zhu; Shuze Zhu; Zheng Jia; Sepideh Parvinian; Yuanyuan Li; Oeyvind Vaaland; Liangbing Hu; Teng Li, Proceedings of the National Academy of Sciences current issue, 2015

The quest for both strength and toughness is perpetual in advanced material design; unfortunately, these two mechanical properties are generally mutually exclusive. So far there exists only limited success of attaining both strength and toughness, which often needs material-specific, complicated, ...

more

DNA polymerase from temperate phage Bam35 is endowed with processive polymerization and abasic sites translesion synthesis capacity [Biochemistry]

07-Jul-2015 | Mónica Berjón-Otero; Laurentino Villar; Miguel de Vega; Margarita Salas; Modesto Redrejo-Rodríguez, Proceedings of the National Academy of Sciences current issue, 2015

DNA polymerases (DNAPs) responsible for genome replication are highly faithful enzymes that nonetheless cannot deal with damaged DNA. In contrast, translesion synthesis (TLS) DNAPs are suitable for replicating modified template bases, although resulting in very low-fidelity products. Here we ...

more

Self-reproducing catalyst drives repeated phospholipid synthesis and membrane growth [Chemistry]

07-Jul-2015 | Michael D. Hardy; Jun Yang; Jangir Selimkhanov; Christian M. Cole; Lev S. Tsimring; Neal K. Devaraj, Proceedings of the National Academy of Sciences current issue, 2015

Cell membranes are dynamic structures found in all living organisms. There have been numerous constructs that model phospholipid membranes. However, unlike natural membranes, these biomimetic systems cannot sustain growth owing to an inability to replenish phospholipid-synthesizing catalysts. ...

more

Synthesis of lithium polyhydrides above 130 GPa at 300 K [Physics]

23-Jun-2015 | Charles Pépin; Paul Loubeyre; Florent Occelli; Paul Dumas, Proceedings of the National Academy of Sciences current issue, 2015

The prediction of novel lithium hydrides with nontraditional stoichiometries at high pressure has been seminal for highlighting a promising line of research on hydrogen-dense materials. Here, we report the evidences of the disproportionation of LiH above 130 GPa to form lithium hydrides ...

more

SAR11 lipid renovation in response to phosphate starvation [Environmental Sciences]

23-Jun-2015 | Paul Carini; Benjamin A. S. Van Mooy; J. Cameron Thrash; Angelicque White; Yanlin Zhao; Emily O. Campbell; Helen F. ..., Proceedings of the National Academy of Sciences current issue, 2015

Phytoplankton inhabiting oligotrophic ocean gyres actively reduce their phosphorus demand by replacing polar membrane phospholipids with those lacking phosphorus. Although the synthesis of nonphosphorus lipids is well documented in some heterotrophic bacterial lineages, phosphorus-free lipid ...

more

Meteorite-catalyzed synthesis of nucleosides and other prebiotic compounds [Chemistry]

09-Jun-2015 | Martin Ferus; Antonín Knížek; Svatopluk Civiš, Proceedings of the National Academy of Sciences current issue, 2015

The origin of life is a longstanding enigma that fascinates scientists and the general public alike. Scientific efforts have yielded a significant amount of data over the last 100 y following a fundamental cornerstone publication: Proiskhozhozhdenie Zhizny (Origin of Life) by Alexander Ivanovich ...

more

Synthesis of refractory organic matter in the ionized gas phase of the solar nebula [Earth, Atmospheric, and Planetary Sciences]

09-Jun-2015 | Maïa Kuga; Bernard Marty; Yves Marrocchi; Laurent Tissandier, Proceedings of the National Academy of Sciences current issue, 2015

In the nascent solar system, primitive organic matter was a major contributor of volatile elements to planetary bodies, and could have played a key role in the development of the biosphere. However, the origin of primitive organics is poorly understood. Most scenarios advocate cold synthesis in ...

more

Entamoeba mitosomes play an important role in encystation by association with cholesteryl sulfate synthesis [Evolution]

02-Jun-2015 | Fumika Mi-ichi; Tomofumi Miyamoto; Shouko Takao; Ghulam Jeelani; Tetsuo Hashimoto; Hiromitsu Hara; Tomoyoshi Nozaki; ..., Proceedings of the National Academy of Sciences current issue, 2015

Hydrogenosomes and mitosomes are mitochondrion-related organelles (MROs) that have highly reduced and divergent functions in anaerobic/microaerophilic eukaryotes. Entamoeba histolytica, a microaerophilic, parasitic amoebozoan species, which causes intestinal and extraintestinal amoebiasis in ...

more

Ultrafast desorption of colloidal particles from fluid interfaces [Engineering]

12-May-2015 | Vincent Poulichet; Valeria Garbin, Proceedings of the National Academy of Sciences current issue, 2015

The self-assembly of solid particles at fluid–fluid interfaces is widely exploited to stabilize emulsions and foams, and in materials synthesis. The self-assembly mechanism is very robust owing to the large capillary energy associated with particle adsorption, of the order of millions of times ...

more

Salmonella promotes virulence by repressing cellulose production [Microbiology]

21-Apr-2015 | Mauricio H. Pontes; Eun-Jin Lee; Jeongjoon Choi; Eduardo A. Groisman, Proceedings of the National Academy of Sciences current issue, 2015

Cellulose is the most abundant organic polymer on Earth. In bacteria, cellulose confers protection against environmental insults and is a constituent of biofilms typically formed on abiotic surfaces. We report that, surprisingly, Salmonella enterica serovar Typhimurium makes cellulose when inside ...

more

Page 1 From 36
Subscribe to e-mail updates relating to your search

You will receive via e-mail the latest search results matching your search criteria. This service is free of charge and can be cancelled at any time.

Your browser is not current. Microsoft Internet Explorer 6.0 does not support some functions on Chemie.DE