Concept

Proton pump

Related publications (57)

Tools to study molecules in high electric fields

This thesis describes the application of the quantum mechanics/molecular mechanics (QM/MM) Car-Parrinello methodology to two systems of high biological interest: (a) The potassium channel KcsA from Streptomyces lividans and (b) The DNA repair enzyme EndoIV ...

EPFL2006

Photoproduction of proton gradients with pi-stacked fluorophore scaffolds in lipid bilayers

Natalie Renuka Banerji, Stefan Matile, Eric Vauthey

Rigid p-octiphenyl rods were used to create helical tetrameric p-stacks of blue, red-fluorescent naphthalene diimides that can span lipid bilayer membranes. In lipid vesicles containing quinone as electron acceptors and surrounded by ethylenediaminetetraac ...

2006

Proton insertion in polycrystalline WO3 studied with electron spectroscopy and semi-empirical calculations

Ulf Anders Hagfeldt

Proton insertion in polycryst. tungsten oxide has been studied with photoelectron spectroscopy and semi-empirical calcns. The W 4f spectra show growth of W5+ and W4+ oxidn. states as a function of inserted proton content in the crystal lattice. A concomita ...

2004

Compositional Heterogeneity Reflects Partial Dehydration in Three-dimensional Crystals of Bacteriorhodopsin

Majed Chergui, Erwin Portuondo Campa, Goran Zgrablic, Stefan Haacke, Selma Schenkl

Absorption, fluorescence and excitation spectra of three-dimensional bacteriorhodopsin crystals harvested from a lipidic cubic phase are presented. The combination of the spectroscopic expts. performed at room temp., controlled pH and full external hydrati ...

2003

Glycoprotein-associated amino acid exchangers: broadening the range of transport specificity

Lukas Kühn

Members of the newly discovered glycoprotein-associated amino acid transporter family (gpaAT-family) share a similar primary structure with >40% identity, a predicted 12-transmembrane segment topology and the requirement for association with a glycoprot ...

2000

Heteronuclear two-dimensional NMR as a conformational probe of cellular phosphates

Geoffrey Bodenhausen

Heteronuclear 2-dimensional NMR was used to correlate the 1H and 31P chem. shifts of cellular phosphates. Exptl. spectra agree with theor. predictions based on a novel approach using subspectral anal. The spectra are sensitive to the homonuclear scalar cou ...

1979

Insights into the Nature of the Active Sites of Tin‐Montmorillonite for the Synthesis of Polyoxymethylene Dimethyl Ethers (OME)

Jeremy Luterbacher, Oliver Kröcher, Florent Emmanuel Héroguel, Alimohammad Bahmanpour, Christophe Jean Baranowski

In this study, we report that intercalation of tin into montmorillonite clay (Sn‐MMT) boosts catalytic activity for the synthesis of polyoxymethylene dimethyl ethers, a promising diesel fuel additive. This increase in activity is attributed to the formatio ...

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