T1TAdb

T1TAdb catalogs annotated Type I toxin-antitoxin (T1TA) loci and associated mRNA and antisense RNA (asRNA) features to support analysis of antisense RNA–mediated regulation in bacteria.

Key Features:

• Extensive Collection: Approximately 1900 loci across around 500 bacterial strains with previously identified toxin-coding sequences are cataloged.
• RNA Annotation: Detailed annotations of both mRNA and asRNA molecules are provided based on key determinants of RNA sequence and structure.
• Bioinformatic Analysis Tools: A bioinformatic procedure annotates RNA molecules with focus on mRNA structure and genetic organization and includes predictions of RNA and protein secondary structures and identification of promoter regions, ribosome-binding sites, and mRNA-asRNA interaction sites.
• Comparative Analysis Tools: Sequence similarity searches and computation of structural multiple alignments annotated with covariation information are available for comparative studies.

Scientific Applications:

• Bacterial genetics: Enables analysis of antisense RNA–mediated regulation and toxin gene organization across bacterial strains.
• Molecular biology: Supports investigation of mRNA/asRNA interactions, promoter elements, and ribosome-binding sites relevant to gene expression control.
• Evolutionary and functional studies: Facilitates comparative analyses of sequence and structural conservation, covariation, and relationships to bacterial adaptation and stress responses.

Methodology:

Computational methods explicitly include annotation of mRNA and asRNA based on RNA sequence and structure determinants, prediction of RNA and protein secondary structures, identification of promoter regions, ribosome-binding sites, mRNA-asRNA interaction sites, sequence similarity searches, and computation of structural multiple alignments annotated with covariation.