Detoxifizyme with activity of transforming aflatoxin and the...

C - Chemistry – Metallurgy – 12 – N

Patent

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C12N 9/00 (2006.01) A23L 1/00 (2006.01) A61K 38/43 (2006.01) A61P 35/00 (2006.01) C07K 14/375 (2006.01) C12N 15/31 (2006.01) C12N 15/52 (2006.01) C12N 15/63 (2006.01)

Patent

CA 2576069

The present invention relates to a detoxifizyme with the activity of transforming aflatoxin and the gene encodes thereof. Inventors firstly isolate and purify a novel protein, named aflatoxin-detoxifizyme (ADTZ), which has the activity of transforming aflatoxin. The primes specify to the ADTZ gene are obtained through purification and sequencing. The gene encoding of ADTZ is cloned from the total RNA of Armillariella tabescens. The recombinant protein is expressed and purified through various expression systems using genetic engineering methods. The said detoxifizyme has bioactivity of transforming AFB1, reducing mutagenic effects of AFB1. It has great potential for the manufacturing of feed or food and development of anti-tumor medicament.

L'invention concerne un type d'enzyme de détoxification ayant une activité consistant à transformer l'aflatoxine et le gène codant pour celle-ci. Les inventeurs ont tout d'abord isolé et purifié une nouvelle protéine, appelée aflatoxine-détoxifizyme (ADTZ), laquelle possède une activité de transformation. On obtient les amorces spécifiques au gène de l'ADTZ grâce à une purification et à un séquençage. On clone le gène codant pour l'ADTZ à partir de l'ARN de Armillariella tabescens et on exprime et on purifie la protéine recombinée grâce à différents systèmes d'expression par des procédés de génie génétique. Ladite enzyme de détoxification a une bioactivité consistant à transformer l'AFB1, à réduire l'effet mutagène de l'AFB1, ce qui fournit une excellente base pour la production de nourriture, pour l'industrie agroalimentaire et pour le développement de médicaments anti-tumeur.

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