Biofilm-associated protein (Bap)

Biofilm-associated protein (Bap) is a high-molecular-weight, multidomain cell surface protein originally identified in Staphylococcus aureus strains associated with chronic bovine mastitis. It serves as a critical mediator of biofilm development by facilitating both the initial attachment to surfaces and the subsequent cell-to-cell aggregation required for biofilm maturation (Cucarella et al., 2001; Lasa & Penadés, 2006). The protein's structure is characterized by a modular organization including tandem repeats and calcium-binding motifs; under specific environmental conditions like low calcium or acidic pH, Bap can self-assemble into amyloid-like fibers to form a robust extracellular scaffold (Taglialegna et al., 2016; Arrizubieta et al., 2004). Because Bap-mediated biofilms provide a physical barrier that protects bacteria from host immune defenses and conventional antibiotics, the protein is a significant target for anti-infective therapy (Cucarella et al., 2001; Taglialegna et al., 2016). Current therapeutic research focuses on developing monoclonal antibodies to block adhesion, small molecules that disrupt calcium-dependent folding, and synthetic peptides designed to prevent the assembly of the Bap-dependent matrix (Lasa & Penadés, 2006; Arrizubieta et al., 2004).

Other names

Bap proteinStaphylococcal biofilm-associated proteinBiofilm-associated surface protein

Inhibition of calcium-dependent intercellular adhesion and disruption of the assembly of amyloid-like scaffolds that constitute the biofilm matrix.