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1979 (1)
1Author    Yun-Fuk Tsang, RagaiK. IbrahimRequires cookie*
 Title    Evidence for the Existence of meta and para Directing O-Methyltransferases in Tobacco Cell Cultures  
 Abstract    The O-methyltransferase of tobacco cell culture was resolved to its meta and para directing forms by chromatography on DEAE-cellulose. Despite similarities in molecular weights and pi values of the two forms, however, evidence from pH optima, SH-group inhibitors, methylation ratios, SDS-acrylamide gels and mixed substrate experiments indicates the existence of two discrete enzymes acting at the meta and para positions of caffeic acid and quercetin, respectively; though the latter enzyme was less substrate specific than its meta counterpart. 
  Reference    Z. Naturforsch. 34c, 46 (1979); received November 17 1978 
  Published    1979 
  Keywords    O-Methyltransferase, Enzyme, meta and para Methylation, Phenols, Tobacco Cell Suspension Culture, Nicotiana tabcaum 
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 TEI-XML for    default:Reihe_C/34/ZNC-1979-34c-0046.pdf 
 Identifier    ZNC-1979-34c-0046 
 Volume    34