The invention provides active, non-naturally occurring mutants of beetle luciferases and DNAs which encode such mutants. A mutant luciferase of the invention differs from the corresponding wild-type luciferase by producing bioluminescence with a wavelength of peak intensity that differs by at least 1 nm from the wavelength of peak intensity of the bioluminescence produced by the wild-type enzyme. The mutant luciferases and DNAs of the invention are employed in various biosensing applications.

L'invention fournit les mutants actifs et se produisants non-naturally des luciferases de coléoptère et le DNAs qui codent de tels mutants. Un luciferase de mutant de l'invention diffère du sauvage-type correspondant luciferase en produisant le bioluminescence avec une longueur d'onde de l'intensité maximale qui diffère par au moins 1 nm de la longueur d'onde de l'intensité maximale du bioluminescence produit par le sauvage-type enzyme. Les luciferases de mutant et le DNAs de l'invention sont utilisés dans diverses applications biosensing.

 
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