Bismuth-binding bacterial enzymes and proteins (null)

Bismuth interacts with a broad range of bacterial enzymes and proteins, primarily by binding to thiol groups and displacing essential metals (such as Zn²⁺) in metalloenzymes. This can inhibit critical bacterial enzymes including urease (important for Helicobacter pylori survival), malate dehydrogenase, succinyl-CoA synthase, fumarase, and various chaperones and metal-binding proteins[1][2][3][4][5][7]. The inhibition can be both competitive and irreversible, depending on the enzyme and the bismuth complex involved[4][5]. Bismuth's broad ability to target multiple proteins underlies its unique utility as a multi-target antibacterial agent, particularly in treating infections like H. pylori and in inhibiting metallo-β-lactamases (MBLs) that contribute to antibiotic resistance[5]. Additional context: - While bismuth itself is not a single-target drug, it targets a functional class (bacterial proteins/enzymes with accessible thiols or metal cofactors). - There is no single canonical protein or gene for “bacterial enzymes/proteins via bismuth binding”—the mechanism is multi-target and species-dependent. - This designation is therefore **non-specific and would be flagged as "is_incorrect: true"** for purposes where an individual, well-defined target is required. If more specificity is needed, individual proteins (e.g., "Urease (H. pylori)", "NDM-1 metallo-β-lactamase") should be used.

Other names

Bismuth-binding proteinsBi(III)-binding enzymesBismuth-targeted bacterial enzymesBismuth-interacting bacterial proteins

Inhibition of enzymatic activity via bismuth coordination, particularly with cysteine residues in active sites; Metal displacement from bacterial metalloenzymes (e.g., replacing essential zinc); Disruption of thiol/metal-binding protein function[4][5][7]