PPD

PPD provides a comprehensive repository of experimentally validated prokaryotic promoters to support analysis of transcriptional regulation across diverse prokaryotic species.

Key Features:

• Manually Curated Data: The database contains 129,148 promoters from 63 prokaryotic species, extracted and curated from published scientific literature.
• Experimental Validation: All entries correspond to promoters validated by experimental evidence reported in the source publications.
• Broad Taxonomic Coverage: PPD covers a wide range of prokaryotes and complements specialized resources such as RegulonDB (Escherichia coli K-12), DBTBS (Bacillus subtilis), and Pro54DB (sigma 54 promoters).
• Computational Analysis: Includes BLAST analysis and sequence visualization capabilities for promoter comparison and inspection.

Scientific Applications:

• Transcriptional regulation studies: Enables investigation of promoter architecture and mechanisms controlling gene expression in prokaryotes.
• Comparative genomics: Supports cross-species comparison of promoter sequences and regulatory motifs.
• Synthetic biology: Provides experimentally validated promoter sequences for selection and design of regulatory elements in synthetic constructs.
• Microbial genetics and biotechnology: Facilitates studies and engineering of gene expression in microbial systems for research and applied purposes.

Methodology:

Systematic extraction of promoter information from published articles followed by manual curation to include only experimentally validated promoters.