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Terahertz and far infrared spectroscopy of alanine-rich peptides having variable ellipticity

Ding, Tao; Li, Ruoyu; Zeitler, J Axel; Huber, Thomas; Gladden, Lynn F; Middelberg, Anton P J; Falconer, Robert J


Terahertz spectra of four alanine-rich peptides with known secondary structures were studied by terahertz time domain spectroscopy (THz-TDS) and by Fourier transform infrared spectroscopy (FTIR) using a synchrotron light source and a liquid-helium cooled bolometer. At ambient temperatures the usable bandwidth was restricted to 0.2-1.5 THz by the absorbance of water. The existence of a solvation shell around the peptide in solution was observed and its size estimated to be between 11 and 17 Å....[Show more]

CollectionsANU Research Publications
Date published: 2010-12-20
Type: Journal article
Source: Optics Express
DOI: 10.1364/OE.18.027431
Access Rights: Open Access


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