Dehydrogenase and a gene encoding the same

Chemistry: molecular biology and microbiology – Enzyme – proenzyme; compositions thereof; process for... – Oxidoreductase

Reexamination Certificate

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C435S106000, C435S232000, C435S252330, C435S488000, C435S252300, C435S108000

Reexamination Certificate

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07452704

ABSTRACT:
The object of the present invention is to provide a novel dehydrogenase having a property which is different from that of known dehydrogenases. The present invention provides a dehydrogenase having the following physicochemical properties:(1) effect: to produce N-alkyl-L-alanine from pyruvic acid and alkylamine or dialkylamine using NADPH and/or NADH as coenzyme;(2) substrate specificity: to show activity to alkylamine or dialkylamine but not to ammonium;(3) optimal pH when using phenylpyruvic acid and methylamine as substrates is around 10; and(4) when treated at 30° C. for 30 minutes, the enzyme is stable at around pH 5 to 10.5.

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