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'Flavonols' in keywords Facet   Publication Year 1983  [X]
Facet   section ZfN Section C:Volume 038  [X]
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1Author    Maurice Jay, Vincenzo De Luca, Ragai IbrahimRequires cookie*
 Title    Meta-Methylation o f Flavonol Rings A (8-) and B (3'-) Is Catalysed by Two Distinct O-Methyltransferases in Lotus corniculatus  
 Abstract    Two O-methyltransferases specific for flavonol rings A and B were isolated from young flower buds of Lotus corniculatus. They were partially purified by ammonium sulphate precipitation and successive chromatography on Sephadex G-100 and Polybuffer ion exchanger. One enzyme focused at pi 5.5 and catalysed the O-methylation of position 8 of flavonols with a pH optimum of 8.1. The other enzyme had a pi o f 5.1 and preferentially attacked position 3' at an optimum pH of 7.7. The methylated products o f both enzymes seem to contribute to the flower colour of Lotus and may be used as biochemical markers in genetic studies of this genus. 
  Reference    Z. Naturforsch. 38c, 413 (1983); received December 21 1982 
  Published    1983 
  Keywords    Lotus corniculatus, Leguminosae, O-Methyltransferase, Flavonols, 8-O-Methylation, 3'-0-Methylation 
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 TEI-XML for    default:Reihe_C/38/ZNC-1983-38c-0413.pdf 
 Identifier    ZNC-1983-38c-0413 
 Volume    38