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Indole pigments of molluscs
Verhecken, A. (1989). Indole pigments of molluscs. Ann. Soc. R. Zool. Bel. 119(2): 187-197
In: Annales de la Société Royale Zoologique de Belgique = Annalen van de Koninklijke Belgische Vereniging voor Dierkunde. Société Royale Zoologique de Belgique: Bruxelles. ISSN 0771-5528, meer
Peer reviewed article  

Beschikbaar in  Auteur 

    Biological phenomena > Biosynthesis
    Pigments > Melanins
    Mollusca [WoRMS]
Author keywords
    Mollusc purple; Indigotin

Auteur  Top 
  • Verhecken, A., meer

    This study discusses occurrence and biosynthesis of melanins and indigoids, pigments with indole structure produced by Mollusca. Indigotin and 6,6'-dibromoindigotin (DBI), constituents of mollusc purple, are treated in some detail. Their colourless precursors in the organism are presumed to be of dietary origin. The hypothesis is formulated that formation of DBI is due to a detoxification mechanism; it is suggested that purple-producing species have developed it into an enzymatically controlled defensive system against large predators. This first reaction step is then followed by spontaneously proceeding reactions involving oxygen and, for DBI, light, leading to the formation of the coloured pigment, which seems to be of no further use to the animal. Experiments with purple from three Mediterranean species are reported.

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