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Fall 2013
Sodium proton exchangers (NHEs) are polytopic membrane proteins that, in archaea, bacteria, yeast and plants, provide increased salt tolerance by removing excess toxic sodium, and in mammals regulate cell volume, growth, differentiation, proliferation, migration and apoptosis in relation to...
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Molecular Mechanisms Underlying the Enhancement of Cardiac Contraction by Modifications of Troponin
DownloadFall 2015
A fine balance between contraction and relaxation is crucial for the heart to function properly. But often the heart cannot contract with enough force to meet the demands of the body. This condition, called systolic heart failure, is the leading cause of death in the modern society. A common...
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Spring 2010
More than 90% of human genes undergo a processing step called splicing, whereby non-coding introns are removed from initial transcripts and coding exons are ligated together to yield mature messenger RNA. Roughly 50% of human genetic diseases correspond to aberrant splicing. Splicing is...
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Characterization, Structure and Mechanism of Sulfide:quinone oxidoreductase (SQR) from Acidithiobacillus ferrooxidans
DownloadFall 2015
A key enzyme in maintaining sulfide homeostasis is the membrane-associated flavoenzyme sulfide:quinone oxidoreductase (SQR) found in nearly all domains of life (except plants). SQR maintains a critical equilibrium between sulfide (H2S, HS- and S2-) and elemental sulfur (S0), coupling the...
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Structure and dynamics of biomolecules: probing muscle regulation, prion protein unfolding, and drug insertion into DNA by nuclear magnetic resonance spectroscopy
DownloadSpring 2011
Nuclear magnetic resonance (NMR) spectroscopy is a powerful approach to study the structure and dynamics of macromolecules in a close-to-native solution environment. In the present thesis I present my investigation of protein and nucleic acid structure and dynamics in a wide variety of biological...
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An NMR-based approach to the structural and functional investigation of the Na+/H+ exchanger NHE1
DownloadFall 2013
The Na+/H+ exchanger isoform 1 (NHE1) is the predominant isoform in mammalian cells, and regulates intracellular pH and ion concentrations. NHE1 also interacts with numerous proteins and signalling pathways. Consequently, it has been found to influence cell volume, growth, differentiation, and...