DNA fragment encoding a polypeptide having nitrile hydratase activity, a transformant containing the DNA fragment and a process for the production of amides using the transformant

摘要

The present invention discloses the amino acid sequence and nucleotide sequence of the α- and β-subunits of two types of nitrile hydratase derived from Rhodococcus rhodochrous J-l. The DNA fragment encoding nitrile hydratase is inserted into an expression vector and the recombinant vector is used for transformation. The transformant contains multiple copies of the gene and can produce much higher levels of nitrile hydratase than conventionally used microorganisms.