title: Spectroscopic and structural elucidation of L-tyrosine-containing dipeptides valyl-tyrosine and tyrosyl-alanine: solid-state IR-LD spectroscopy, quantum chemical calculations and vibrational analysis.
abstract: L-Tyrosine-containing dipeptides valyl-tyrosine (H-Val-Tyr-OH) and tyrosyl-alanine (H-Tyr-Ala-OH) are characterized structurally by means of quantum chemical ab initio calculations and solid-state linear-dichroic infrared (IR-LD) spectroscopy. The IR-characteristic bands are assigned by application of reducing-difference procedure for polarized IR-spectra interpretation. Infrared data obtained are supported as well by the made vibrational analysis. The structures of both peptides are predicted on the basis of conformational analysis and structural information, obtained by the shown IR-spectroscopic tool.
authors.affiliation: Sofia University, St Kl Ohridsky, Faculty of Chemistry, Department of Analytical Chemistry, 1164, Sofia, Bulgaria. BKoleva@chem.uni-sofia.bg
authors.forename: Bojidarka B
authors.initials: BB
authors.lastname: Koleva
authors.forename: Tsonko M
authors.initials: TM
authors.lastname: Kolev
authors.forename: Michael
authors.initials: M
authors.lastname: Spiteller
mesh_terms: D004151:Dipeptides / Q000737:chemistry*; D008956:Models, Chemical; D008968:Molecular Conformation; D011789:Quantum Theory; D013055:Spectrophotometry, Infrared; D013816:Thermodynamics; D014443:Tyrosine / Q000737:chemistry*; D014732:Vibration
chemical_list: D004151:Dipeptides; C414029:valyltyrosine; D014443:Tyrosine