Listeria monocytogenes is a gram-positive, foodborne bacterium responsible for disease in humans and animals. Listeriolysin O\n(LLO) is a required virulence factor for the pathogenic effects of L. monocytogenes. Bioinformatics revealed conserved putative\nepitopes of LLO that could be used to develop monoclonal antibodies against LLO. Continuous and discontinuous epitopes were\nlocated by using four different B-cell prediction algorithms. Three-dimensional molecularmodels were generated to more precisely\ncharacterize the predicted antigenicity of LLO.Domain 4 was predicted to contain five of eleven continuous epitopes.Alarge portion\nof domain 4 was also predicted to comprise discontinuous immunogenic epitopes. Domain 4 of LLO may serve as an immunogen\nfor eliciting monoclonal antibodies that can be used to study the pathogenesis of L. monocytogenes as well as develop an inexpensive\nassay.
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