ArticleBiotechnology letters2021
Effect of by-products from the dairy industry as alternative inducers of recombinant β-galactosidase expression.
Article in Biotechnology letters, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
2 citing papers in PubMed, 9 citations in OpenAlex.
- Physiologically Aggregated LacZ Applied in Trehalose Galactosylation in a Recycled Batch Mode.Life (Basel, Switzerland) · 2023Article
- Cheese-whey permeate improves the fitness of Escherichia coli cells during recombinant protein production.Biotechnology for biofuels and bioproducts · 2023Article
Corrections and comments
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Authors and funding
10 authors at 4 institutions in 1 country.
Funding
Abstract
objectiveThe aim of the present study was to evaluate the efficiency of lactose derived from cheese whey and cheese whey permeate as inducer of recombinant Kluyveromyces sp. β-galactosidase enzyme produced in Escherichia coli. Two E. coli strains, BL21(DE3) and Rosetta (DE3), were used in order to produce the recombinant enzyme. Samples were evaluated for enzyme activity, total protein content, and sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE) analysis after induction with isopropyl-β-D-1-thiogalactoside (IPTG) (0.05 and 1 mM) and lactose, cheese whey, and cheese whey permeate solutions (1, 10, and 20 g/L lactose) at shake-flask cultivation, and whey permeate solution (10 g/L lactose) at bioreactor scale.
resultsThe highest specific activities obtained with IPTG as inducer (0.05 mM) after 9 h of induction, were 23 and 33 U/mg
conclusionsThe induction with cheese whey permeate was more efficient for recombinant β-galactosidase expression than the other inducers tested, and thus, represents an alternative form to reduce costs in recombinant protein production.
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