(s)-.alpha.-phenethylamine : pyruvate transaminase

C - Chemistry – Metallurgy – 12 – N

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C12N 9/10 (2006.01) C12P 41/00 (2006.01)

Patent

CA 2317028

An enzyme capable of converting a ketone compound into an optically active amino compound via a transamination reaction and a process for producing an optically active amino compound by using this enzyme. (S)-.alpha.- Phenethylamine:pyruvate transaminase which acts on (S)-.alpha.-phenethylamine and a ketone compound and catalyzes a transamination reaction whereby acetophenone and an amino compound corresponding to the ketone compound are formed; a process for producing an optically active amino compound by using the transaminase; and a method for culturing a microorganism producing the above transaminase wherein at least one inducer selected from the group consisting of propylamine, 1-butylamine, 2-butylamine, 2-pentylamine, isopropylamine and isobutylamine is added to the medium in culturing the transaminase-producing microorganism.

L'invention porte sur une enzyme capable de convertir un composé de cétone en un composé amino optiquement actif par une réaction de transamination. L'invention porte également sur un procédé de production d'un composé amino optiquement actif au moyen de cette enzyme. (S)-.alpha.-phénéthylamineransaminase de pyruvate agit sur (S)-.alpha.-phénéthylamine et sur un composé de cétone et catalyse une réaction de transamination dans laquelle sont formés une acétophénone et un composé amino correspondant au composé de cétone. L'invention porte également sur un procédé de production d'un composé amino optiquement actif à l'aide de la transaminase, ainsi que sur un procédé de mise en culture d'un micro-organisme produisant la transaminase précitée. Au moins un inducteur sélectionné dans le groupe comprenant une propylamine, 1-butylamine, 2-butylamine, 2-pentylamine, isopropylamine et isobutylamine est ajouté au milieu dans la mise en culture du micro-organisme produisant la transaminase.

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