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NCBI
The National Center for Biotechnology Information advances science and health by providing access to biomedical and genomic information.
UniProt
The mission of UniProt is to provide the scientific community with a comprehensive, high-quality and freely accessible resource of protein sequence and functional information.
DBTBS
DBTBS is a reference database on transcriptional regulation in Bacillus subtilis, summarizing the experimentally characterized transcription factors, their recognition sequences and the genes they regulate.
RegulonDB
RegulonDB is the primary database on transcriptional regulation in Escherichia coli K-12 containing knowledge manually curated from original scientific publications, complemented with high throughput datasets and comprehensive computational predictions.