FimH adhesin (Escherichia coli) (FimH)

FimH is a bacterial adhesin protein found at the tip of type 1 fimbriae in Escherichia coli. It specifically binds to mannose residues on host cell glycoproteins and is a major determinant of E. coli’s ability to attach to and colonize epithelial surfaces, notably in the urinary tract. FimH plays a critical role in the pathogenesis of urinary tract infections and contributes to biofilm formation, making it a validated target for anti-adhesion drugs and vaccines. The FimH adhesin features a double-domain structure: a mannose-binding lectin domain and a pilin domain that anchors it to the fimbria. Mutations in FimH can alter binding characteristics and enhance virulence. Targeted pharmacological inhibition or immunization against FimH disrupts bacterial adhesion and is under investigation for preventing E. coli infections

Other names

Type 1 fimbrial adhesinMannose-specific adhesinFimH protein

Competitive inhibition (occupying the mannose-binding pocket to prevent adhesion); Allosteric inhibition (stabilizing non-adhesive FimH conformations); Vaccine-induced antibody response targeting FimH