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 Title: Rotational Spectrum Of Tryptophan Author(s): Sanz, M. Eugenia Contributor(s): Alonso, José L.; Mata, Santiago; Cabezas, Carlos Subject(s): Biology, natural substances Abstract: The rotational spectrum of the natural amino acid tryptophan has been observed using a recently constructed LA-MB-FTMW spectrometer, specifically designed to optimize the detection of heavier molecules at a lower frequency range. Independent analyses of the rotational spectra of individual conformers have conducted to a definitive identification of two different conformers of tryptophan, with one of the observed conformers never reported before. The experimental values of the $^{14}$N nuclear quadrupole coupling constants have been found capital in the discrimination of the conformers. Both observed conformers are stabilized by a O-H$\cdots$N hydrogen bond in the side chain and a N–H$\cdots$$\pi$ interaction forming a chain that reinforces the strength of hydrogen bonds through cooperative effects. Issue Date: 2014-06-17 Publisher: International Symposium on Molecular Spectroscopy Citation Info: Sanz, M.E.; Alonso, J.L.; Mata, S.; Cabezas, C. ROTATIONAL SPECTRUM OF TRYPTOPHAN. Proceedings of the International Symposium on Molecular Spectroscopy, Urbana, IL, June 16-21, 2014. DOI: 10.15278/isms.2014.TD04 Genre: CONFERENCE PAPER/PRESENTATION Type: Text Language: English URI: http://hdl.handle.net/2142/50925 DOI: https://doi.org/10.15278/isms.2014.TD04 Rights Information: Copyright 2014 by the authors. Licensed under a Creative Commons Attribution 4.0 International License. http://creativecommons.org/licenses/by/4.0/ Date Available in IDEALS: 2014-09-172015-04-14
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