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Title:Preferred conformers of non-proteinogenic amino acids homoserine and homocysteine
Author(s):Alonso, José L.
Contributor(s):Cabezas, Carlos; Alonso, E. R.; Mata, Santiago; Rodríguez, Miguel A.; Díez, Verónica
Subject(s):Chirped pulse
Abstract:Vaporization of solid homoserine and homocysteine by laser ablation in combination with Fourier transform microwave spectroscopy techniques made possible the detection of their most stable structures in a supersonic expansion. All detected conformers have been identified through their rotational and $^{14}$N quadrupole coupling constants. They show hydrogen bonds linking the amino and carboxylic group through N--H$\cdot\cdot\cdot$O=C (type I) or N$\cdot\cdot\cdot$H--O (type II) interactions. In some of them there are additional hydrogen bonds established between the amino group and the hydroxyl/thiol groups in the gamma position. Entropic effects related to the side chain have been found to be significant in determining the most populated conformations.
Issue Date:2016-06-22
Publisher:International Symposium on Molecular Spectroscopy
Genre:Conference Paper/Presentation
Rights Information:Copyright 2016 by the authors
Date Available in IDEALS:2016-08-22

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