Organization of the CTX prophage in environmental isolates of Vibrio mimicus |
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Authors: | Islam Mohammad Sirajul Rahman Mohammed Ziaur Khan Sirajul Islam Mahmud Zahid Hayat Ramamurthy Thandavarayan Nair Gopinath Balakrish Sack Richard Bradley Sack David Allen |
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Affiliation: | International Centre for Diarrhoeal Disease Research, Dhaka, Bangladesh. sislam@icddrb.org |
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Abstract: | The organization of the CTX prophage in environmental strains of Vibrio mimicus was investigated. Sixteen hundred non-sucrose fermenting vibrios were examined for ctx gene by hybridization. Out of 1,600 isolates, 6 V. mimicus isolates contained ctxA gene. The organization of CTX prophage was determined by RFLP using ctxA probe. The CTX prophage integrated at a single site in V. mimicus genome which was present as a single copy flanked by at least a single RS element. Ribotype pattern revealed that a particular clone of V. mimicus acquired the CTXPhi in the aquatic environment. This study demonstrated that V. mimicus could act as a reservoir of CTXPhi in the aquatic environment. |
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Keywords: | environment genetic element vibrio mimicus CTX gene |
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