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10,556 Newest Publications in journal of physical chemistry b

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Glutamate Induced Thermal Equilibrium Intermediate and Counteracting Effect on Chemical Denaturation of Proteins

09-Jan-2018 | Bramhini Anumalla; N. Prakash Prabhu, Journal of Physical Chemistry B, 2018

When organisms are subjected to stress conditions, one of their adaptive responses is accumulation of small organic molecules called osmolytes. These osmolytes affect the structure and stability of the biological macromolecules including proteins. The present study examines the effect of a ...

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Glutamate Induced Thermal Equilibrium Intermediate and Counteracting Effect on Chemical Denaturation of Proteins

09-Jan-2018 | Bramhini Anumalla; N. Prakash Prabhu, Journal of Physical Chemistry B, 2018

When organisms are subjected to stress conditions, one of their adaptive responses is accumulation of small organic molecules called osmolytes. These osmolytes affect the structure and stability of the biological macromolecules including proteins. The present study examines the effect of a ...

more

Aging, Jamming, and the Limits of Stability of Amorphous Solids

09-Jan-2018 | Vassiliy Lubchenko; Peter G. Wolynes, Journal of Physical Chemistry B, 2018

Apart from not having crystallized, supercooled liquids can be considered as being properly equilibrated and thus can be described by a few thermodynamic control variables. In contrast, glasses and other amorphous solids can be arbitrarily far away from equilibrium and require a description of ...

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Multiple Conformational States Contribute to the 3D Structure of a Glucan Decasaccharide: A Combined SAXS and MD Simulation Study

09-Jan-2018 | Sunhwan Jo; Daniel Myatt; Yifei Qi; James Doutch; Luke A. Clifton; Wonpil Im; Göran Widmalm, Journal of Physical Chemistry B, 2018

The inherent flexibility of carbohydrates is dependent on stereochemical arrangements, and characterization of their influence and importance will give insight into the three-dimensional structure and dynamics. In this study, a β-(1→4)/β-(1→3)-linked glucosyl decasaccharide is experimentally ...

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Grotthuss Transport of Iodide in EMIM/I3 Ionic Crystal

22-Dec-2017 | Jesse G. McDaniel; Arun Yethiraj, Journal of Physical Chemistry B, 2017

Highly ionic environments can mediate unusual chemical reactions that would otherwise be considered impossible based on chemical intuition. For example, the formation of a chemical bond between two iodide anions to form a divalent polyiodide anion is seemingly prohibited due to Coulombic ...

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Unique Hydrogen Bonds in Membrane Protein Monitored by Whole Mid-IR ATR Spectroscopy in Aqueous Solution

22-Dec-2017 | Shota Ito; Masayo Iwaki; Shinya Sugita; Rei Abe-Yoshizumi; Tatsuya Iwata; Keiichi Inoue; Hideki Kandori, Journal of Physical Chemistry B, 2017

Protein function is coupled to its structural changes, for which stimulus-induced difference Fourier-transform infrared (FTIR) spectroscopy is a powerful method. By optimizing the attenuated total reflection (ATR)-FTIR analysis on sodium-pumping rhodopsin KR2 in aqueous solution, we first ...

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Tuning the Viscoelastic-Gel Transition of Single-Wall Carbon Nanotubes Embedded in pH-Responsive Polyelectrolyte Solutions

22-Dec-2017 | Atiđa Selmani; Antonio Tavera-Vázquez; Cristina Garza; Rolando Castillo, Journal of Physical Chemistry B, 2017

We present the detailed rheological changes that occur when small quantities of single-wall carbon nanotubes are dispersed in a poly(acrylic acid) water solution, around the overlap polymer concentration, up to the gel point. Here, pH is used to tune the gel formation. Suspensions of nanotubes at ...

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Folding Simulations of a Nuclear Receptor Box-Containing Peptide Demonstrate the Structural Persistence of the LxxLL Motif Even in the Absence of Its Cognate Receptor

22-Dec-2017 | Triantafyllia Adamidou; Konstantina-Olympia Arvaniti; Nicholas M. Glykos, Journal of Physical Chemistry B, 2017

Regulation of nuclear receptors by their coactivators involves the recognition and binding of a specific sequence motif contained in the coactivator sequence. This motif is known as the nuclear receptor (NR) box and contains a conserved LxxLL subsequence, where L is leucine and x is any amino ...

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Energy Landscape of the Substrate Translocation Equilibrium of Plasma-Membrane Glutamate Transporters

22-Dec-2017 | Jiali Wang; Thomas Albers; Christof Grewer, Journal of Physical Chemistry B, 2017

Glutamate transporters maintain a large glutamate concentration gradient across synaptic membranes and are, thus, critical for functioning of the excitatory synapse. Mammalian glutamate transporters concentrate glutamate inside cells through energetic coupling of glutamate flux to the ...

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Strategy for Modeling the Electrostatic Responses of the Spectroscopic Properties of Proteins

22-Dec-2017 | Hajime Torii, Journal of Physical Chemistry B, 2017

For better understanding and more efficient use of the spectroscopic probes (vibrational and NMR) of the local electrostatic situations inside proteins, appropriate modeling of the properties of those probes is essential. The present study is devoted to examining the strategy for constructing ...

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