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Specific activity is the activity per quantity of a radionuclide and is a physical property of that radionuclide. Activity is a quantity related to radioactivity for which the SI unit is the becquerel (Bq), equal to one reciprocal second. The becquerel is defined as the number of radioactive transformations per second that occur in a particular radionuclide. The older, non-SI unit of activity is the Curie (Ci) which is 3.7×10¹⁰ transformations per second.

Tyrosine decarboxylase mutant and gene and application thereof

InactiveCN105969755AHigh application potentialFermentationGenetic engineeringWild typeLactobacillus brevis

The invention discloses a tyrosine decarboxylase mutant and a gene and application thereof. The mutant is obtained after serine at the site 586 of tyrosine decarboxylase which comes from lactobacillus brevis and has an amino acid sequence shown as SEQ ID No:1 in a sequence table is substituted by alanine. The specific activity of the tyrosine decarboxylase mutant on the substrate tyrosine is 2.23 times that of wild-type tyrosine decarboxylase, and the Km value on the substrate is 72.4% that of the wild-type tyrosine decarboxylase. The tyrosine decarboxylase mutant is more suitable for preparation of tyramine products than the wild-type tyrosine decarboxylase and has a good industrial development prospect.

Tyrosine decarboxylase mutant and gene and application thereof

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Owner:JIANGNAN UNIV

1 results about "Specific activity" patented technology

Tyrosine decarboxylase mutant and gene and application thereof

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