Thiol-containing bacterial protein

Thiol-containing bacterial proteins comprise a diverse group of bacterial proteins characterized by the presence of cysteine residues with reactive thiol (-SH) groups. These thiol groups enable functional versatility, including participation in redox reactions, formation and reshuffling of disulfide bonds crucial for protein folding and function, and dynamic regulation via post-translational modifications such as S-glutathionylation and S-nitrosylation[1][2][4][5]. Certain subgroups are especially significant: - **Thioester-containing domains (TEDs):** Present in some Gram-positive bacterial surface proteins, TEDs covalently link bacteria to host proteins, contributing to infection and colonization. Disruption of these domains can potentially inhibit bacterial attachment and serve as an anti-infective strategy[3]. - **Thiol-activated cytolysins:** These form transmembrane pores in host cells upon being activated by thiols, playing a key role in bacterial virulence[6]. Thiol chemistry is critical for oxidative folding in the bacterial periplasm, orchestrated by enzymes such as DsbA and DsbC, which introduce and rearrange disulfide bonds in bacterial proteins[2]. Misregulation of thiol-containing proteins can lead to pathogenic protein misfolding or impaired host defense. Targeting bacterial thiol chemistry or thioester-dependent interactions represents a promising but challenging therapeutic strategy due to the ubiquitous and essential nature of thiols in both host and pathogen systems[1][5]. **Note:** This is a heterogeneous, functional, rather than single structural protein family. The query "Thiol-containing bacterial proteins" is too broad to serve as a unique canonical drug target entity. For structured records, it is recommended to specify the particular thiol-containing protein or functional subclass (e.g., "Thiol-activated cytolysin", "DsbA oxidoreductase", "Thioester-containing adhesin") for clearer mechanistic and therapeutic annotation.

Other names

Thioester-containing proteinThiol-activated proteinSulfhydryl-containing bacterial proteinDisulfide bond–containing bacterial protein

Redox modification of thiol groups (disulfide bond formation/breakage) Inhibition or modification of thiol groups Interference with bacterial adhesion (for thioester proteins)