Demonstration of a Temperature-Dependent Inactivating Factor of the Thermostable Direct Hemolysin in Vibrio parahaemolyticus
نویسندگان
چکیده
منابع مشابه
Characterization of the temperature-dependent inactivating factor of the thermostable direct hemolysin in Vibrio parahaemolyticus.
The termostable direct hemolysin of Vibrio parahaemolyticus is inactivated by heating at around 55 C with an inactivating factor isolated from culture filtrates of V. parahaemolyticus. The characteristics of the temperature-dependent inactivating factor were studied by using polyacrylamide gel disc electrophoresis. It was found that when heated with the hemolysin, the inactivating factor destro...
متن کاملPurification and characterization of thermostable direct hemolysin of Vibrio parahaemolyticus.
A thermostable direct hemolysin was purified from culture filtrates of Vibrio parahaemolyticus. The purified hemolysin gave one precipitation line with the antihemolysin antiserum on agar-gel diffusion test and a single band on polyacrylamide gel electrophoresis. The hemolysin was not inactivated by heating at 70 to 100 C for 10 min. The hemolytic activity was not enhanced by the addition of le...
متن کاملSequence variation in the thermostable direct hemolysin-related hemolysin (trh) gene of Vibrio parahaemolyticus.
Our previous molecular epidemiologic study with gene probes (H. Shirai, H. Ito, T. Hirayama, Y. Nakamoto, N. Nakabayashi, K. Kumagai, Y. Takeda, and M. Nishibuchi, Infect. Immun. 58:3568-3573, 1990) demonstrated that the gene (trh) encoding a thermostable direct hemolysin-related hemolysin was strongly associated with clinical strains of Vibrio parahaemolyticus. Strain-to-strain variation in th...
متن کاملRoles of thermostable direct hemolysin (TDH) and TDH-related hemolysin (TRH) in Vibrio parahaemolyticus
Vibrio parahaemolyticus is the leading cause of seafood borne bacterial gastroenteritis in the world, often associated with the consumption of raw or undercooked seafood. However, not all strains of V. parahaemolyticus are pathogenic. The thermostable direct hemolysin (TDH) or TDH-related hemolysin (TRH) encoded by tdh and trh genes, respectively, are considered major virulence factors in V. pa...
متن کامل[Cloning and expression in Escherichia coli of Vibrio parahaemolyticus thermostable direct hemolysin and thermolabile hemolysin genes].
Two hemolysin genes of Vibrio parahaemolyticus WP1, a thermostable direct (TSD) hemolysin gene and a thermolabile hemolysin gene, were cloned into the pBR322 vector in Escherichia coli K-12 C600. A large amount of the TSD hemolysin produced in E. coli K-12 accumulated in the periplasmic space. The TSD hemolysin gene was localized on a 0.9-kilobase HindIII-BamHI fragment by identifying qualitati...
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ژورنال
عنوان ژورنال: Infection and Immunity
سال: 1974
ISSN: 0019-9567,1098-5522
DOI: 10.1128/iai.10.1.6-10.1974