Proceedings of the Japan Academy, Series B
Online ISSN : 1349-2896
Print ISSN : 0386-2208
Original Paper
Structure of commelinin, a blue complex pigment from the blue flowers of Commelina communis
Masaaki SHIONONaohiro MATSUGAKIKosaku TAKEDA
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JOURNALS FREE ACCESS

2008 Volume 84 Issue 10 Pages 452-456

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Abstract

The X-ray crystal structure of natural commelinin is investigated. The results demonstrate that commelinin is a tetranuclear (4 Mg2+) metal complex, in which two Mg2+ ions chelate to six anthocyanin molecules, while the other two Mg2+ ions bind to six flavone molecules, stabilizing the commelinin complex, a new type of supramolecular complex.

(Communicated by Shoji SHIBATA, M.J.A.)

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© 2008 The Japan Academy
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