Open AccessChirooptische Eigenschaften von schwefelhaltigen Aminosäuren
Author(s) -
Jung Günther,
Ottnad Michael,
Rimpler Manfred
Publication year - 1973
Publication title -
european journal of biochemistry
Language(s) - English
Resource type - Journals
eISSN - 1432-1033
pISSN - 0014-2956
DOI - 10.1111/j.1432-1033.1973.tb02856.x
Subject(s) - chromophore , optical rotatory dispersion , chemistry , alkyl , circular dichroism , sulfur , lanthionine , sulfide , amino acid , dissociation (chemistry) , aqueous solution , photochemistry , stereochemistry , crystallography , organic chemistry , biochemistry
For the sulfur containing amino acids lanthionine, cystathionine, allocystathionine, djencolic acid, felinine, S ‐alkyl cysteines and S ‐alkyl homocysteines the circular dichroism spectra are recorded. In order to evaluate the effects influencing the carboxyl and in particular the sulfide chromophore a detailed investigation of the pH and temperature dependency is made. Contrary to the bands of the ultraviolet absorption and the optical rotatory dispersion, the Cotton effects of the sulfide and carboxyl chromophores can be used with advantage for comparative studies. The influence in the distance between the chiral centers and the chromophores on the ellipticities of the dissymmetrically disturbed sulfide group is described. The chiroptical behaviour of these sulfur containing amino acids in aqueous solutions is discussed with respect to their structure, dissociation equilibria, configuration and conformation.