Purification and molecular characterization of a tripeptidase (PepT) from Lactobacillus helveticus

Article Abstract:

Research describes purification and characterization of a tripeptidase in Lactobacillus along with data on cloning, DNA sequencing, and mRNA analysis of the gene encoding the enzyme.

Proteases, Gene expression

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Metabolic engineering of Lactobacillus helveticus CNRZ32 for production of pure L-(+)-lactic acid

Article Abstract:

Research describes the usage of gene replacement technology to improve the production of lactic acid by Lactobacillus helveticus CNRZ32. Results show that in the genetically engineered strains lactic acid production was higher by 53 to 93% as compared to the wild-type strain.

Product enhancement, Genetic engineering, Lactic acid, Genetic regulation

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Molecular genetic characterization of the L-lactate dehydrogenase gene (ldhL) of Lactobacillus helveticus and biochemical characterization of the enzyme

Article Abstract:

The molecular genetic characterization of the L-lactate dehydrogenase gene (ldhL) of Lactobacillus helveticus and the biochemical characterization of the enzyme was examined by isolating it from a lambda library. Cloning, DNA sequencing and messenger RNA analysis of the ldhL gene from L. helveticus were also reported. Results show that the ldhL gene have the capacity to encode a protein of 323 amino acids.

Enzymes, Lactate dehydrogenase

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