Nitrile-hydratase activity enzymes; genetic tools and...

C - Chemistry – Metallurgy – 12 – N

Patent

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Details

C12N 15/60 (2006.01) C12N 1/21 (2006.01) C12N 9/78 (2006.01) C12N 9/88 (2006.01) C12P 13/02 (2006.01)

Patent

CA 2146656

Novel enzymes with a nitrile-hydratase activity, capable of catalyzing the transformation of nitriles into amides. Said enzymes are characterized by having an enzymatic activity in relation to substrates with a nitrile function and a carboxylate function greater than that relative to substrates with at least two nitrile functions. The invention also concerns a DNA sequence coding for an enzyme with a nitrile-hydratase activity capable of hydrolyzing nitriles into amides, an analogue of this sequence resulting from degenerescence of the genetic code, or a DNA sequence hybridizing with one of these sequences or a fragment of the latter and coding for an enzyme with a nitrile-hydratase activity. Finally, the invention embraces the germs capable of producing the above-mentioned enzymes.

La présente invention concerne de nouvelles enzymes à activité nitrile-hydratase, capables de catalyser la transformation des nitriles en amides, caractérisées en ce qu'elles possèdent une activité enzymatique vis-à-vis des substrats présentant une fonction nitrile et une fonction carboxylate supérieure à celle vis-à-vis des substrats ayant au moins deux fonctions nitriles. Elle concerne, également, une séquence d'ADN codant pour une enzyme ayant une activité nitrile-hydratase capable d'hydrolyser les nitriles en amides, un analogue de cette séquence résultant de la dégénérescence du code génétique, ou une séquence d'ADN hybridant avec l'une de ces séquences ou un fragment de celles-ci et codant pour une enzyme ayant une activité nitrile-hydratase. Enfin, l'invention couvre les germes aptes à produire les susdites enzymes.

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