Published in Biotechnology letters
With generation times of less than 10 min under optimal conditions, the halophilic Vibrio natriegens is the fastest growing non-pathogenic bacterium isolated so far. The availability of the full genome and genetic engineering tools and its ability to utilize a wide range of carbon sources make V. natriegens an attractive host for biotechnological p...
Published in Biotechnology letters
This study was conducted to enhance the production of tacrolimus in Streptomyces tsukubaensis by strain mutagenesis and optimization of the fermentation medium. A high tacrolimus producing strain S. tsukubaensis FIM-16-06 was obtained by ultraviolet mutagenesis coupled with atmospheric and room temperature plasma mutagenesis.Then, nine variables we...
Published in Biotechnology letters
Marine actinomycetes from the genus Salinispora have an unexploited biotechnological potential. To accurately estimate their application potential however, data on their cultivation, including biomass growth kinetics, are needed but only incomplete information is currently available. This work provides some insight into the effect of temperature, s...
Published in Biotechnology letters
Mycobacterial acid-resistant protease (MarP) is a membrane-associated serine protease involved in the survival of Mycobacterium tuberculosis in macrophages; here we produced MarP in the yeast Pichia pastoris and study its involvement in macrophage immune modulation. Pichia pastoris vectors, harboring a full-length or a partial sequence of MarP, wer...
Published in Biotechnology letters
Firefly luciferase, one of the most extensively studied enzymes, has numerous applications. However, luciferase activity is inhibited by sodium chloride. This study was aimed at obtaining mutant luciferase enzymes resistant to the sodium chloride inhibition. We first obtained two mutant luciferase enzymes whose inhibition were alleviated and determ...
Published in Biotechnology letters
An attractive cell source for stem cell-based therapy are WJ-MSCs. Hence, tracking WJ-MSCs using non-invasive imaging procedures (such as MRI) and contrast agents (Zn0.5Ni0.5Fe2O4, NFNPs) are required to evaluate cell distribution, migration, and differentiation. Results showed that the bare and dextrin-coated NFNPs were internalized inside the WJ-...
Published in Biotechnology letters
Develop a Cell Surface Display system in Saccharomyces cerevisiae, based on the construction of an expression cassette for pYES2 plasmid. The construction of an expression cassette containing the α-factor signal peptide and the C-terminal portion of the α-agglutinin protein was made and its sequence inserted into a plasmid named pYES2/gDαAgglutinin...
Published in Biotechnology letters
Development of a system for direct lactose to ethanol fermentation provides a market for the massive amounts of underutilized whey permeate made by the dairy industry. For this system, glucose and galactose metabolism were uncoupled in Saccharomyces cerevisiae by deleting two negative regulatory genes, GAL80 and MIG1, and introducing the essential ...
Published in Biotechnology letters
Myocardial infarction (MI) is a prevalent cardiovascular puzzle and a mainspring of disease-induced mortality. We performed this investigation to detect the role of putative important miRNAs or genes in MI. CCL20 may be a potential therapeutic target, which was directly targeted and negatively regulated by miR-19a. CCL20 expression was significantl...
Published in Biotechnology letters
Here we report heterologous expression, enzymatic characterization and structure homology modeling of a subtilisin-like alkaline serine protease (ASP) from Bacillus halodurans C-125. Encoding gene was successfully obtained by PCR and cloned into pMA0911 shuttle vector under the control of strong HpaII promoter and expressed extracellularly. ASP enz...
