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'Phosphorylation' in keywords Facet   section ZfN Section C:Volume 037  [X]
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1982 (2)
1Author    Angela De, Souza Otero, Leopoldo De MeisRequires cookie*
 Title    Phosphorylation o f Ca2+-ATPase by Inorganic Phosphate in Water-Organic Solvent Media: Dielectric Constant and Solvent Hydrophobicity Contribution1  
 Abstract    The effect o f organic solvents on the phosphorylation o f the Ca2+-dependent ATPase o f sar­ coplasmic reticulum by inorganic phosphate in the absence o f a calcium gradient was investi­ gated. Kinetic analysis o f the reaction in water and water-organic solvent m edia according to a bireactant scheme shows no correlation betw een changes in kinetic parameters and the dieletric constant o f the mixed solvents. The pronounced increase in equilibrium levels o f phosphoenzym e in water-solvent mixtures is attributed to changes in the water activity o f the m edium. 
  Reference    Z. Naturforsch. 37c, 527 (1982); received January 4 1982 
  Published    1982 
  Keywords    Phosphorylation, Ca2+-ATPase, Inorganic Phosphate, O rganic Solvents 
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 TEI-XML for    default:Reihe_C/37/ZNC-1982-37c-0527.pdf 
 Identifier    ZNC-1982-37c-0527 
 Volume    37 
2Author    Paul RöschRequires cookie*
 Title    Statistical Description of Isotope Exchange Processes: A M ultisite Model for the lsO Exchange  
 Abstract    An analytical procedure has been developed for the determination of isotope exchange processes as exemplified by the l80 exchange catalysed by enzyme-nucleotide complexes. The model is able to handle more than one type of active site per reaction solution and is also able to distinguish between different types of inequivalence of the oxygens of enzyme bound P,. Use of transition matrix formalism and basic statistical considerations lead directly to the simple model. A data refinement procedure is introduced and model calculations are shown. 
  Reference    Z. Naturforsch. 37c, 1161—1169 (1982); received July 15 1982 
  Published    1982 
  Keywords    ATPases, Enzyme Kinetics, l80, Phosphorylation, 3IP-NMR 
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 TEI-XML for    default:Reihe_C/37/ZNC-1982-37c-1161.pdf 
 Identifier    ZNC-1982-37c-1161 
 Volume    37