Sequence variation in the thermostable direct hemolysin-related hemolysin (trh) gene of Vibrio parahaemolyticus

Article Abstract:

The nucleotide sequence manifesting very weak hybridization signals to the trh probe in some strains of Vibrio parahaemolyticus was sequenced and its product analyzed. A new gene, named trh2 was noted, and its product was found to be a hemolytic protein whose specificities were different from the hemolysin coded for by the trh, now called trh1, gene. Hybridization analysis showed significant strain-to-strain variations for both genes. The trh2 gene was detected in a significant number of clinical strains, hence strains with this gene are to be considered potentially virulent.

Physiological aspects, Vibrio

---

Novel Bacillus thuringiensis insecticidal crystal protein with a silent activity against coleopteran larvae

Article Abstract:

A protein called CryIIIC produced by Bacillus thuringiensis was found to have silent activity against Colorado potato beetle larvae. The protein is contained in bipyramidal crystals and is made up of a single chain with a trypsin-resistant toxic core moiety of 72 kDa. Insecticidal activity is expressed only after in vitro solubilization and proteolytic activation. The native crystals are nontoxic. The gene coding for CryIIIC was also sequenced. Relatively low homology was found between CryIIIC and the other Cry proteins.

Bacillus thuringiensis

---

Shigella dysentriae type 1- specific bacteriophage from environmental waters in Bangladesh

Article Abstract:

A bacteriophage from surface water samples from Bangladesh that specifically lyses strains of S. dysenteriae type 1 was isolated. The results of the study suggest that phage SF-9 may have epidemiological applications in tracing the presence of S. dysenteriae type 1 in environmental waters.

Science & research, Bangladesh, Development and progression, Bacteriophages, Shigella

Similar abstracts:

• Abstracts: Visualization and modelling of the thermal inactivation of bacteria in a model food. New mathematical modeling approach for predicting microbial inactivation by high hydrostatic pressure
• Abstracts: Inactivation of Cryptosporidium parvum Oocysts by ammonia. Effect of high-rate algal ponds on viability of Cryptosporidium parvum oocysts
• Abstracts: Genetic differentiation of the malaria vector Anopheles gambiae across Nigeria suggests that selection limits gene flow
• Abstracts: Naphthalene degradation via salicylate and gentisate by Rhodococcus sp. strain B4. Isolation and characterization of a fluorene-degrading bacterium: identification of ring oxidation and ring fission products
• Abstracts: Organization and nucleotide sequence of the glutamine synthetase (glnA) gene from Lactobacillus delbruekcii subsp. bulgaricus

This website is not affiliated with document authors or copyright owners. This page is provided for informational purposes only. Unintentional errors are possible.