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The thermostable direct hemolysin-related hemolysin (trh) gene of Vibrio parahaemolyticus: Sequence variation and implications for detection and function
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2016
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Source: Journal of Microbiological Methods, 126, 1-7
[PDF-650.36 KB]
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Journal Title:Journal of Microbiological Methods
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Description:Vibrio parahaemolyticus is a leading cause of bacterial food-related illness associated with the consumption of undercooked seafood. Only a small subset of strains is pathogenic. Most clinical strains encode for the thermostable direct hemolysin (TDH) and/or the TDH-related hemolysin (TRH). In this work, we amplify and sequence the trh gene from over 80 trh + strains of this bacterium and identify thirteen genetically distinct alleles, most of which have not been deposited in GenBank previously. Sequence data was used to design new primers for more reliable detection of trh by endpoint PCR. We also designed a new quantitative PCR assay to target a more conserved gene that is genetically-linked to trh. This gene, ureR, encodes the transcriptional regulator for the urease gene cluster immediately upstream of trh. We propose that this ureR assay can be a useful screening tool as a surrogate for direct detection of trh that circumvents challenges associated with trh sequence variation.
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Source:Journal of Microbiological Methods, 126, 1-7
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ISSN:0167-7012
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