Dna strand coding for .alpha.-acetolactate decarboxylase and...

C - Chemistry – Metallurgy – 12 – N

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195/9, 195/1.235

C12N 15/55 (2006.01) C12N 1/19 (2006.01) C12C 11/04 (1990.01)

Patent

CA 1296276

ABSTRACT OF THE DISCLOSURE DNA strand having an ability in biotechnological production of .alpha.-acetolactate decarboxylase is disclosed. The DNA strand is characterized in that it has a nucleotide sequence coding for a polypeptide whose amino acid sequence is substantially from A to B of Fig. 1 and which has .alpha.-acetolactate decarboxcylase activity. Also disclosed is a yeast which belongs to Saccharomyces cerevisiae and which has been transformed by the DNA strand. The yeast is characterized by the fact that its .alpha.-acetolactate producing ability is reduced, and will thus produce an alcoholic liquor such as beer which contains no or little diacetyls which have come from their precursor, namely .alpha.-acetolactate.

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