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1980 (1)
1978 (1)
1Author    Johannes Kösler, Monika Ohm, Wolfgang BarzRequires cookie*
 Title    Metabolism of Anthranilic Acid in Plant Cell Suspension Cultures  
 Abstract    Cell suspension cultures of some 12 plants were investigated for anthranilic acid metabolism. Rapid uptake of substrate is accompanied by partial excretion of anthranilic acid-N-glucoside and followed by predominant conversion into tryptophan. Ring cleavage reactions of anthranilate could not be observed but peroxidatic polymerisation occurred to a high percentage. Anthranilic acid-N-glucoside is not permanently stored by the cell cultures. 
  Reference    Z. Naturforsch. 33c, 368 (1978); received April 19 1978 
  Published    1978 
  Keywords    Anthranilic Acid, Plant Cell Suspension Cultures, Tryptophan, Glucoside, Degradation, Peroxidases 
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 TEI-XML for    default:Reihe_C/33/ZNC-1978-33c-0368.pdf 
 Identifier    ZNC-1978-33c-0368 
 Volume    33 
2Author    A. Fleuriet, J. J. Macheix, R. Suen, R. K. IbrahimRequires cookie*
 Title    Partial Purification and Some Properties of a Hydroxycinnamoyl Glucosyltransferase from Tomato Fruits  
 Abstract    A glucosyltransferase was isolated from im mature "cherry" tom atoes and was partially purified (200-fold) by am m onium sulphate precipitation and successive chrom atography on Sephadex G-100 and DEAE-cellulose columns. The enzyme utilised the free hydroxycinnamic acids and UDP-glucose in the form ation o f their respective glucosides (pH 8.0) and glucose esters (pH 7.0); but did not accept the CoA thiolesters o f HCAs in the presence of glucose-1-phosphate. The constant glucoside/glucose ester ratio observed during purification suggests that both reactions are catalysed by the sam e enzyme. The K m values for /»-coumaric, caffeic, ferulic and sinapic acids were 0.8, 1.5, 1.4 and 2.5 hm, respectively. W ith ferulic acid as substrate, the K m value for U D PG was 10 hm. The enzyme required an -S H group for activity and the reaction was strongly inhibited by EDTA, divalent metal ions and UDP. 
  Reference    Z. Naturforsch. 35c, 967—9 (1980); received August 14 1980 
  Published    1980 
  Keywords    Glucosyltransferase, Glucosides, Glucose Esters, Hydroxycinnamic Acids, Enzyme Purification and Properties, Tom ato Fruit, Lycopersicum esculentum (Solanaceae) 
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 TEI-XML for    default:Reihe_C/35/ZNC-1980-35c-0967.pdf 
 Identifier    ZNC-1980-35c-0967 
 Volume    35