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The diversity of eukaryotic populations, in particular protozoa, in the water supplies of intensively reared broilers has not been previously studied. This important food-rearing environment was screened for the molecular diversity of eukaryotes by the analysis of PCR-amplified 18S rRNA. DNA was...
The genes encoding phosphoglucose isomerase ( fruI ) and fructokinase ( fruK ) of Lactobacillus fermentum NRRL-B-1932 were sequenced. They constituted an operon, which is involved in fructose metabolism of this strain by channeling intracellular fructose into the phosphoketolase pathway. A third...
Rhizopus oryzae has long been used for enzyme production (e.g., glucoamylase and lipase), organic acid synthesis, and various fermented food applications. In this work, we describe a set of plasmid-based expression vectors that can be used for the production of heterologous proteins in R. oryzae...
We found the occurrence of 4-hydroxybenzoate decarboxylase in Enterobacter cloacae P240, isolated from soils under anaerobic conditions, and purified the enzyme to homogeneity. The purified enzyme was a homohexamer of identical 60 kDa subunits. The purified decarboxylase catalyzed the...
The extracellular zinc-metalloprotease of Vibrio anguillarum is a secreted virulence factor. It is synthesized from the empA gene as a 611-residue preproprotease and processed to the active mature protease (EmpA) with concomitant secretion via the type II secretion pathway. Active EmpA has been...
Listeria monocytogenes is an ubiquitous gram-positive, opportunistic food-borne human and animal pathogen. To date, five L. monocytogenes autolysins have been characterized: p60, p45, Ami, MurA and Auto and the preliminary results of our studies show that FlaA, a flagellar protein of L ....
The naturally occurring sulfonate N -acetyltaurine was synthesized chemically and its identity was confirmed. Aerobic enrichment cultures for bacteria able to utilize N- acetyltaurine as sole source of fixed nitrogen or as sole source of carbon were successful. One representative isolate, strain...
In this study, Aspergillus terreus was irradiated by a 7.3 mW He–Ne laser in the presence of crystal violet, toluidine blue O and hematoporphyrin as photosensitizers. Xylanases recovered from non-irradiated and irradiated fungi were purified and characterized. The maximum production of xylanase...
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