Τετάρτη 26 Ιουνίου 2019

Correction to: Phloretin reduces cell injury and inflammation mediated by Staphylococcus aureus via targeting sortase B and the molecular mechanism
The images of cells under microscope in Figure 2 and Figure S2 were misused from Wang G et al. Front Cell Infect Microbiol. 2018 Nov 30;8:418. These images were generated in the same set of assays.
Latest Results for Applied Microbiology and Biotechnology
09:22
Production and enhancement of the acetylcholinesterase inhibitor, huperzine A, from an endophytic Alternaria brassicae AGF041
Abstract Huperzine A (HupA) is a potent acetylcholinesterase (AChE) inhibitor of a great consideration as a prospective drug candidate for Alzheimer’s disease treatment. Production of HupA by endophytes offers an alternative challenge to reduce the massive plant harvest needed to meet the increasing demand of HupA. In the current study, some endophytic fungal and actinobacterial isolates from the Chinese herb, Huperzia serrata, underwent liquid fermentation, alkaloid extraction,...
Latest Results for Applied Microbiology and Biotechnology
09:22
Identification of a thermostable fungal lytic polysaccharide monooxygenase and evaluation of its effect on lignocellulosic degradation
Abstract Auxiliary activity family 9 (AA9) lytic polysaccharide monooxygenases (LPMOs) show significant synergism with cellulase in cellulose degradation. In recent years, there have been many reports on AA9 LPMOs; however, the identification of efficient and thermostable AA9 LPMOs with broad potential for industrial applications remains necessary. In this study, a new AA9 LPMO from Talaromyces cellulolyticus, named TcAA9A, was identified. An analysis of the oxidation products...
Latest Results for Applied Microbiology and Biotechnology
09:22
Co-culture of Lactobacillus delbrueckii and engineered Lactococcus lactis enhances stoichiometric yield of d -lactic acid from whey permeate
Abstract d-Lactic acid (d-LA) is an enantiomer of lactic acid, which has a niche application in synthesis of poly-lactic acid based (PLA) polymer owing to its contribution to the thermo-stability of stereo-complex PLA polymer. Utilization of renewable substrates such as whey permeate is pivotal to economically viable production of d-LA. In present work, we have demonstrated d-LA production from whey permeate by Lactobacillus delbrueckii and engineered Lactococcus lactis. We observed...
Latest Results for Applied Microbiology and Biotechnology
09:22
Identifying and engineering the ideal microbial terpenoid production host
Abstract More than 70,000 different terpenoid structures are known so far; many of them offer highly interesting applications as pharmaceuticals, flavors and fragrances, or biofuels. Extraction of these compounds from their natural sources or chemical synthesis is—in many cases—technically challenging with low or moderate yields while wasting valuable resources. Microbial production of terpenoids offers a sustainable and environment-friendly alternative starting from simple carbon...
Latest Results for Applied Microbiology and Biotechnology
09:22
Highly regio- and enantioselective synthesis of chiral intermediate for pregabalin using one-pot bienzymatic cascade of nitrilase and amidase
Abstract Nitrilase-mediated hydrolysis of isobutylsuccinonitrile (IBSN) is a highly attractive approach for (S)-3-cyano-5-methylhexanoic acid ((S)-CMHA), the critical chiral intermediate of pregabalin. In this study, a robust nitrilase from Arabis alpina (AaNIT) was screened and engineered. The N258D mutant was obtained with high catalytic activity and excellent enantioselectivity (E > 300) towards IBSN at a high substrate concentration of 100 g L−1. Byproduct (S)-3-cyano-5-methyl...
Latest Results for Applied Microbiology and Biotechnology
09:22
YKL107W from Saccharomyces cerevisiae encodes a novel aldehyde reductase for detoxification of acetaldehyde, glycolaldehyde, and furfural
Abstract The aldehyde reductases from the short-chain dehydrogenase/reductase (SDR) family were identified as a series of critical enzymes for the improved tolerance of Saccharomyces cerevisiae to the aldehydes by catalyzing the detoxification reactions of aldehydes. Herein, we report that a novel aldehyde reductase Ykl107wp deduced from YKL107W from S. cerevisiae belongs to the classical SDR group and can catalyze the reduction reactions of acetaldehyde (AA), glycolaldehyde...
Latest Results for Applied Microbiology and Biotechnology
09:22
Protein expression analysis revealed a fine-tuned mechanism of in situ detoxification pathway for the tolerant industrial yeast Saccharomyces cerevisiae
Abstract Inhibitory compounds liberated from lignocellulose pretreatment are representative toxic chemicals that repress microbial growth and metabolism. A tolerant strain of the industrial yeast Saccharomyces cerevisiae is able to detoxify a major class of toxic compounds while producing ethanol. Knowledge on the yeast tolerance was mostly obtained by gene expression analysis and limited protein expression evidence is yet available underlying the yeast adaptation. Here we report...
Latest Results for Applied Microbiology and Biotechnology
09:22
Comparison of engineered Escherichia coli AF1000 and BL21 strains for (R)- 3-hydroxybutyrate production in fed-batch cultivation
Abstract Accumulation of acetate is a limiting factor in recombinant production of (R)-3-hydroxybutyrate (3HB) by Escherichia coli in high-cell-density processes. To alleviate this limitation, this study investigated two approaches: (i) deletion of phosphotransacetylase (pta), pyruvate oxidase (poxB), and/or the isocitrate lyase regulator (iclR), known to decrease acetate formation, on bioreactor cultivations designed to achieve high 3HB concentrations. (ii) Screening of different...
Latest Results for Applied Microbiology and Biotechnology
09:22

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