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 AFB 1 , reducing mutagenic effects of AFB 1 . It has great potential for the manufacturing of feed or food and development of anti-tumor medicament.
