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

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dc.contributor.authorDing, Tao
dc.contributor.authorLi, Ruoyu
dc.contributor.authorZeitler, J Axel
dc.contributor.authorHuber, Thomas
dc.contributor.authorGladden, Lynn F
dc.contributor.authorMiddelberg, Anton P J
dc.contributor.authorFalconer, Robert J
dc.date.accessioned2016-06-07T23:46:59Z
dc.date.available2016-06-07T23:46:59Z
dc.date.issued2010-12-20
dc.description.abstractTerahertz 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. By cooling the peptide solution to 80 K in order to reduce the water absorbance the bandwidth was increased to 0.1-3.0 THz for both THz-TDS and FTIR. Spectra were consistent with monotonic absorbance of the peptide and the existence of a solid amorphous low density solvation shell.en_AU
dc.description.sponsorshipThis work was funded by the Australian Research Council grant number DP0773111 and supported by the National Collaborative Research Infrastructure Strategy, an Australian Federal Government initiative. We thank the Australian Synchrotron for access to their infrared beamline (grant numbers FI1137 and FI1437), and Dominique Appadoo and Danielle Martin of the Australian Synchrotron for their assistance. TD thanks the University of Queensland for an international travel grant. JAZ thanks Gonville & Caius College, Cambridge for a Research Fellowship. RL thanks the EPSRC and Trinity College, Cambridge for funding his PhD.en_AU
dc.identifier.issn1094-4087en_AU
dc.identifier.urihttp://hdl.handle.net/1885/102327
dc.publisherOptical Society of Americaen_AU
dc.relationhttp://purl.org/au-research/grants/arc/DP0773111en_AU
dc.rights© 2010 Optical Society of Americaen_AU
dc.sourceOptics Expressen_AU
dc.subjectalanineen_AU
dc.subjectequipment designen_AU
dc.subjectequipment failure analysisen_AU
dc.subjectpeptidesen_AU
dc.subjectspectrophotometry, infrareden_AU
dc.subjectsynchrotronsen_AU
dc.subjectterahertz spectroscopyen_AU
dc.titleTerahertz and far infrared spectroscopy of alanine-rich peptides having variable ellipticityen_AU
dc.typeJournal articleen_AU
dcterms.accessRightsOpen Accessen_AU
local.bibliographicCitation.issue26en_AU
local.bibliographicCitation.lastpage27444en_AU
local.bibliographicCitation.startpage27431en_AU
local.contributor.affiliationDing, Tao, University of Queensland, Australiaen_AU
local.contributor.affiliationLi, Ruoyu, University of Cambridge, United Kingdomen_AU
local.contributor.affiliationZeitler, J. Axel, University of Cambridge, United Kingdomen_AU
local.contributor.affiliationHuber, Thomas, College of Physical and Mathematical Sciences, CPMS Research School of Chemistry, RSC General, The Australian National Universityen_AU
local.contributor.affiliationGladden, Lynn F, University of Cambridge, United Kingdomen_AU
local.contributor.affiliationMiddelberg, Anton PJ, University of Queensland, Australiaen_AU
local.contributor.affiliationFalconer, Robert J, University of Queensland, Australiaen_AU
local.contributor.authoruidU9512183en_AU
local.description.notesImported from ARIESen_AU
local.identifier.absfor030499en_AU
local.identifier.absseo970106en_AU
local.identifier.ariespublicationu4005981xPUB430en_AU
local.identifier.citationvolume18en_AU
local.identifier.doi10.1364/OE.18.027431en_AU
local.identifier.essn1094-4087en_AU
local.publisher.urlhttp://www.osa.org/en-us/home/en_AU
local.type.statusPublished Versionen_AU

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