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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...
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...
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...
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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