Now showing items 1-2 of 2

    • Evidence for cooperative effects in human liver arginase 

      Carvajal Baeza, Nelson; Acoria García, Marina; Rodríguez Vives, Juan Pablo; Fernández Gálvez, Mireya; Martínez Winkler, Jorge (1982)
      The reaction kinetics of human liver arginase (l-arginine amidinohydrolase, EC 3.5.3.1) in terms of arginine concentration is strikingly altered by varying the pH. Lowering the pH from the optimum (9.5) toward a more ...
    • Urease of Spirulina maxima 

      Carvajal, Nelson; Fernández, Mireya; Pablo Rodríguez, Juan; Donoso, Margarita (1980)
      Urease (EC 3.5.1.5) was purified from Spirulina maxima by ammonium sulfate precipitation, DEAE-cellulose chromatography and gel filtration on Sephadex G-200. The enzyme had maximum activity at pH 8.7, a Km for urea of 0.12 ...