title: Modification of yeast uricase with polyethylene glycol: disappearance of binding ability towards anti-uricase serum.
abstract: Uricase from Candida utilis was modified with activated polyethylene glycol (2-O-methoxypolyethylene glycol-4,6-dichloro-s-triazine) of molecular weight of 5,000 daltons. The modification of 43% of the total amino groups in the uricase molecule gave rise to a complete loss of the binding ability towards anti-uricase serum from rabbit. This modified uricase retained 15% of the enzymic activity of non-modified uricase.
mesh_terms: D000818:Animals; D000937:Antigen-Antibody Reactions; D002175:Candida / Q000201:enzymology*; D007106:Immune Sera; D011092:Polyethylene Glycols; D011817:Rabbits; D014503:Urate Oxidase / Q000276:immunology / Q000378:metabolism*
chemical_list: D007106:Immune Sera; D011092:Polyethylene Glycols; D014503:Urate Oxidase