Bacterial surface proteins and sulfur-containing metabolites

Bacterial surface proteins and sulfur-containing metabolites represent a collective group of molecular targets for broad-spectrum antimicrobial agents, particularly silver ions (Ag+). Silver ions have a high affinity for sulfhydryl (thiol) groups found in various bacterial components (https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6315945/). On the cell surface, they bind to membrane-bound proteins and enzymes, disrupting cell wall integrity and transport mechanisms (https://pubmed.ncbi.nlm.nih.gov/11033305/). Internally, they interact with sulfur-containing metabolites such as glutathione and various enzymes, leading to protein denaturation and oxidative stress. This interaction also inhibits essential metabolic pathways like the respiratory chain and DNA replication (https://www.sciencedirect.com/science/article/pii/S0169409X1830156X). The multi-targeted nature of this interaction makes it difficult for bacteria to develop resistance compared to single-target antibiotics. Clinically, this mechanism is exploited through the use of topical agents like silver nitrate and silver sulfadiazine for wound management and infection prevention. However, excessive systemic absorption can lead to argyria, a permanent bluish-gray discoloration of the skin and tissues.

Other names

Bacterial thiolsThiol-containing bacterial componentsBacterial surface proteinsSulfur-containing bacterial metabolitesBacterial sulfhydryl groups

Binding to sulfhydryl (thiol) groups in bacterial surface proteins and internal metabolites, leading to protein denaturation, enzymatic inactivation, and disruption of cellular membranes and metabolic processes.