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Conformation induction in the two related peptides, α-melanocyte stimulating hormone (α-MSH) and δ-melanocyte stimulating hormone (δ-MSH), have been studied in solvent media containing varying percentages of the membrane-mimetic solvent 2,2,2-trifluoroethanol (TFE) using fluorescence and circular dichroism (CD) spectroscopy. Singular value decomposition (SVD) analysis of the CD spectra at different...
Recent experimental and theoretical advances in understanding the electronic excited states of simple amides are reviewed. Polarized reflection spectroscopy of single crystals of N-acetylglycine shows that the direction of the first ππ* (NV 1 ) transition dipole moment of a secondary amide differs by approximately 15 o from that of a primary amide. Ab initio calculations on simple...
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