Immobilization of Urease on Activated Methoxypolyethyleneglycol-5000
Articles > Article · 1996
Authors: Ş. Hamarat, A. H. Uslan
Artificial Cells, Blood Substitutes, and Biotechnology, International, 1996, vol 24, pp 273-283
DOI: 10.3109/10731199609117439
Summary
Urease (E.C 3.5.1.5) was covalently immobilized on activated methoxypolyethyleneglycol-5000 which is linear, uncharged, soluble in water and nonimmunogenic. mPEG is bound to the epsilon-NH2 groups of Lysin in urease. Previously different molar ratios of urease -Lys/activated-mPEG were searched for immobilization. Storage stabilities, molecular weights and the values of blocked amino groups were determined for each immobilized urease and the best conditions was found 1:3 urease-Lys/activated mPEG. Furthermore physical characterization, kinetic constants (Km, Vmax), heat and temperature stabilites were also determined.