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'Synechococcus' in keywords Facet   Publication Year 1983  [X]
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1Author    Ahlert Schmidt, Elisabeth KrämerRequires cookie*
 Title    A Membrane Bound Cysteine Oxydase from the Cyanobacterium Synechococcus 6301  
 Abstract    Membrane fractions o f the cyanobacterium Synechococcus 6301 obtained by french press treatment following sonication catalyzed an oxygen-dependent oxydation o f cysteine to cystine. For 1 0 2 consumed four cysteine were oxydized. O xygen uptake was com pletely inhibited by 1 mM KCN. Only D-and L-cysteine were active and partial activity was observed with DL-homocysteine and cysteamine. N o activity was found with glutathione, mercaptoethanol, thioglycerol, dithioerythritol, or N-acetyl-L-cysteine. Cysteines with a blocked acid group such as O-methyl-L-cysteine and O-ethyl-L-cysteine were oxydized rapidly by Synechococcus m em brane fractions. Rates o f about 200 (imol o f cysteine oxydized per mg chlorophyll and hour were measured. This cysteine respiration is discussed in relation to dark inactivation o f enzymes. 
  Reference    Z. Naturforsch. 38c, 446—450 (1983); received February 22 1983 
  Published    1983 
  Keywords    Cysteine Oxydation, Oxygen, Thiol Compounds, Synechococcus, Cyanobacteria 
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 TEI-XML for    default:Reihe_C/38/ZNC-1983-38c-0446.pdf 
 Identifier    ZNC-1983-38c-0446 
 Volume    38