Bacterial thiol-containing protein

Bacterial thiol-containing proteins are a broad and functionally diverse group defined by the presence of cysteine residues whose thiol (-SH) groups participate in redox regulation, detoxification, enzyme catalysis, and protein structural stabilization through disulfide bonding[1][2][3][4]. In bacteria, these proteins are essential components of the antioxidant defense system and regulate cellular responses to oxidative, nitrosative, and electrophilic stress via post-translational thiol modifications, such as S-thiolation, disulfide bond formation, or covalent conjugation to low-molecular-weight thiols like glutathione, mycothiol, bacillithiol, or coenzyme A[1][4]. These modifications can reversibly inactivate or activate key metabolic and stress response enzymes, modulate protein-protein interactions, and contribute to bacterial survival in hostile environments, including in the presence of host immune defenses[2][4]. Owing to their central metabolic and stress-response roles, thiol-containing proteins are considered promising antimicrobial targets, but their highly conserved and essential nature raises specificity and safety concerns for therapeutic exploitation. Note: "Bacterial thiol-containing protein" refers to a molecular class, not a single, specific protein or gene product. It is therefore overly broad, non-canonical as a single actionable target, and should be refined to individual enzymes or well-defined protein families for structured data applications.

Other names

Bacterial thiol proteinBacterial thiol enzymeBacterial thiol-redox proteinBacterial protein with cysteine thiol

Covalent modification/oxidation of cysteine thiols, leading to enzyme inactivation or activation Disulfide bond formation/disruption S-thiolation or alkylation of cysteine residues, altering protein function