ChemPhysChem

Cover image for Vol. 15 Issue 17

Editor: Greta Heydenrych; Editorial Board Chairs: Christian Amatore, Michael Grätzel, Michel Orrit

Online ISSN: 1439-7641

Associated Title(s): Advanced Materials, ChemBioChem, ChemCatChem, ChemElectroChem, ChemSusChem, Small

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November 14, 2014

VIP: Exploring the Free Energy and Conformational Landscape of tRNA at High Temperature and Pressure

Caroline Schuabb, Melanie Berghaus, Christopher Rosin and Prof. Dr. Roland Winter

Exploring the Free Energy and Conformational Landscape of tRNA at High Temperature and PressureRNA under pressure! Exploration of the conformational and free-energy landscape of the 76-residue yeast phenylalanine transfer RNA (tRNAPhe; see figure) reveals that RNA unfolding differs not only from protein unfolding but also from DNA melting. Compared with the pronounced temperature effect, pressure-dependent changes in the secondary structure of tRNAPhe are small, however, even up to the 1000 MPa range.

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Recently Published Articles

  1. BC3 Sheet Functionalized with Lithium-Rich Species Emerging as a Reversible Hydrogen Storage Material

    Dr. Tanveer Hussain, Dr. Sudip Chakraborty, Prof. T. W. Kang, Prof. Börje Johansson and Prof. Rajeev Ahuja

    Article first published online: 25 NOV 2014 | DOI: 10.1002/cphc.201402696

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    The decoration of a BC3 monolayer with CLi4 and OLi2 molecules for use in hydrogen-storage applications is investigated by first principles electronic structure calculations.

  2. Classification of Clock Reactions

    Dr. Attila K. Horváth and Prof.Dr. István Nagypál

    Article first published online: 25 NOV 2014 | DOI: 10.1002/cphc.201402806

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    Watching the clock: Based on both phenomenological and mechanistic approaches we attempt to classify the reactions featuring clock behavior into three distinct groups: substrate-depletive, autocatalysis-driven clock reactions, and systems with pseudo clock behavior. We also show that the inherently autocatalytic Landolt type reactions can either be classified as substrate-depletive or autocatalysis-driven clock reactions depending on the rate of the substrate/clock species reaction, but an autocatalytic process should not necessarily be categorized as a clock reaction.

  3. Revisiting the Electrochemical Impedance Spectroscopy of Magnesium with Online Inductively Coupled Plasma Atomic Emission Spectroscopy

    Viacheslav Shkirskiy, Dr. Andrew D. King, Oumaïma Gharbi, Dr. Polina Volovitch, Prof. John R. Scully, Prof. Kevin Ogle and Prof. Nick Birbilis

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    In the loop: Reactive metals such as magnesium reveal significant inductance during electrochemical impedance spectroscopy (EIS) measurements. Combined atomic emission spectro-electrochemistry and EIS provided a definitive assessment for the electrochemical analysis of Mg dissolution.

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    Article first published online: 24 NOV 2014 | DOI: 10.1002/cphc.201402652

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    Smoke screen: Vibrational circular dichroism spectroscopy confirms the incidence of a conformational mixture (2:1 m01/m02; see figure) in (−)-S-nicotine (pure liquid and DMSO and CCl4 solutions). Experimental and theoretical results indicate that hyperconjugative interactions play a dominant role in the conformational equilibrium.

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    A life cut short: A combined study of the photocurrent from Au–TiO2 films compared with H2 generation from water/methanol mixtures is presented. Gold seems to introduce charge separation with visible light, but the lifetime of charge separation on the relevant microsecond timescale is too short for interparticle charge migration.

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