X-ray Crystal Structure and Time-resolved Spectroscopy of the Blue Carotenoid Violerythrin

0355275 - BC 2012 RIV US eng J - Článek v odborném periodiku
Polívka, Tomáš - Frank, H.A. - Enriquez, M.M. - Niedzwiedzki, D.M. - Liaaen-Jensen, S. - Hemming, J. - Helliwell, J.R. - Helliwell, M.
X-ray Crystal Structure and Time-resolved Spectroscopy of the Blue Carotenoid Violerythrin.
Journal of Physical Chemistry B. Roč. 114, č. 26 (2010), s. 8760-8769. ISSN 1520-6106. E-ISSN 1520-5207
Výzkumný záměr: CEZ:AV0Z50510513
Klíčová slova: carotenoids * excited states * spectroscopy
Kód oboru RIV: BO - Biofyzika
Impakt faktor: 3.603, rok: 2010

Blue carotenoid violerythrin was investigated by X-ray crystallography and ultrafast time-resolved spectroscopy. The X-ray crystal structure shows that the molecule is nearly planar with the terminal rings positioned in the s-trans conformation. Time-resolved spectroscopic data of violerythrin are similar to those of other carbonyl carotenoids with long conjugated chains. The study determined structural requirements for a blue, neutral carotenoid: 1) planar, symmetric chromophore, 2) central polyene chain with nine or ten conjugated carbon-carbon double bonds connected at each end by an s-trans or trans bond to two identical, cyclic end groups, each possessing a conjugated keto group further cross-conjugated to another keto group or a double bond in a quinoid type structure.
Trvalý link: http://hdl.handle.net/11104/0006294