Article Abstract:
Extracellular protein consisting of p57 and its aggregates and breakdown products are released in hiigh concentrations by Renibacterium salmoninarum in the tissues of salmonids suffering from bacterial kidney disease. Fractionation of the protein and its derivatives into specific ranges of molecular mass did not prevent p57 from generating aggregation and degradation products. A structural similarity was observed between the polysaccharide material in the extracellular products and the O-polysaccharide in Aeromonas salmonicida.
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Article Abstract:
Tetragenococcus halophila bacteria that occur and grow in Chinese- and Japanese-type fermented soy sauces exhibit differences in the utilization of L-arabinose. Nearly all isolates in the Chinese-type sauce utilize L-arabinose while only 40% of the isolates from Japanese-type sauce do so. The Japanese-type bacteria are heterogeneous with respect to substrate utilization. The isolates from different soy source manufacturers have little genetic relationship, though protein fingerprinting reveals their species similarity.
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Article Abstract:
Microbiological research shows that the gram-positive bacteria Streptomyces cinnamomeus produces a new 50-kDA lipase. The lipase encoding gene, designated LipA, produces toxic cell surfactants when S. cinnamomeus is grown in olive-oil cultures. Evidence suggests that another gene product is needed to establish the enzyme's three-dimensional structure used in catalytic action.
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