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X-ray Crystal Structure and Time-resolved Spectroscopy of the Blue Carotenoid Violerythrin
- 1.0355275 - BC 2012 RIV US eng J - Journal Article
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
Institutional research plan: CEZ:AV0Z50510513
Keywords : carotenoids * excited states * spectroscopy
Subject RIV: BO - Biophysics
Impact factor: 3.603, year: 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.
Permanent Link: http://hdl.handle.net/11104/0006294
Number of the records: 1