Abstract
The X-ray crystal structure of natural commelinin is investigated. The results demonstrate that commelinin is a tetranuclear (4 Mg(2+)) metal complex, in which two Mg(2+) ions chelate to six anthocyanin molecules, while the other two Mg(2+) ions bind to six flavone molecules, stabilizing the commelinin complex, a new type of supramolecular complex.
MeSH terms
-
Binding Sites
-
Commelina / chemistry*
-
Crystallography, X-Ray
-
Flavones / chemistry*
-
Flavones / metabolism
-
Flavonoids / chemistry*
-
Flavonoids / metabolism
-
Flowers / chemistry*
-
Glucosides / chemistry*
-
Glucosides / metabolism
-
Metals / metabolism
-
Models, Molecular
-
Molecular Conformation
-
Pigmentation*
-
Pigments, Biological / chemistry*
-
Pigments, Biological / metabolism
Substances
-
Flavones
-
Flavonoids
-
Glucosides
-
Metals
-
Pigments, Biological
-
delphinidin 3-O-(6-O-p-coumaroylglucoside)-5-O-(6-O-malonylglucoside)
-
swertisin 4'-O-glucoside