title: [Tyrosinases of the pigmented portions of the eye in 4 species of rodent].
abstract: Ocular tyrosinases of choroid from adult Rabbit, Rat, Hamster and Guinea pig are separated by gel electrophoresis. A single tyrosinase is found in all mammalian species investigated, it is present in pigmented strains and lacking in albino ones. Molecular weights of those enzymes, as determined by polyacrilamide gradient gel electrophoresis, are about 67,000. Involvement of ocular mammalian tyrosinases in in vitro L tyrosine oxidation has been demonstrated.
mesh_terms: D000417:Albinism / Q000201:enzymology; D000818:Animals; D004156:Catechol Oxidase / Q000032:analysis*; D006224:Cricetinae; D004591:Electrophoresis, Polyacrylamide Gel; D005123:Eye / Q000201:enzymology*; D006168:Guinea Pigs; D008970:Molecular Weight; D014442:Monophenol Monooxygenase / Q000032:analysis*; D010084:Oxidation-Reduction; D011817:Rabbits; D051381:Rats; D012168:Retinal Pigments; D012377:Rodentia / Q000378:metabolism*; D013045:Species Specificity; D014443:Tyrosine / Q000378:metabolism
chemical_list: D012168:Retinal Pigments; D014443:Tyrosine; D004156:Catechol Oxidase; D014442:Monophenol Monooxygenase
vernacular_title: Les tyrosinases des parties pigmentées de l'aeil chez quatre espèces de Rongeurs