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Hemolysin BL (HBL) is a tripartite toxin produced by Bacillus cereus, consisting of three distinct proteins: B, L1, and L2. These components work synergistically to exhibit hemolytic, cytotoxic, and dermonecrotic activities, contributing to its role as a virulence factor in foodborne diarrheal illnesses. The toxin operates by forming pores in cell membranes, leading to cell lysis and fluid accumulation, as demonstrated in ligated rabbit ileal loop assays. The gene encoding Hemolysin BL is located within the Bacillus cereus genome, and its expression is tightly regulated to ensure effective pathogenicity. Structural studies have provided insights into the assembly of the HBL complex, revealing the intricate interactions between its subunits, which are crucial for its functionality.
仅用于科研。不用于诊断过程。未经明确授权不得转售。