Biological databases and tools are critical resources for the analysis and interpretation of biological data. They provide a repository for large amounts of biological information, such as DNA and protein sequences, gene expression data, and genomic information. Here is an overview of some of the most commonly used biological databases and tools:

  1. NCBI: The National Center for Biotechnology Information (NCBI) is a comprehensive database of genetic and molecular biology data, including nucleotide and protein sequences, genomic information, and literature citations.
  2. UniProt: UniProt is a database of protein sequences and their annotations, including information on protein function, structure, and interaction.
  3. Ensembl: Ensembl is a genome browser that provides access to genomic data for a wide range of species, including humans, model organisms, and other animals.
  4. Gene Ontology: The Gene Ontology (GO) project provides a standardized vocabulary for the description of gene function, and includes a database of gene annotations.
  5. BLAST: Basic Local Alignment Search Tool (BLAST) is a program that allows for the comparison of nucleotide or protein sequences to other sequences in a database, and can be used to identify homologous sequences and infer evolutionary relationships.
  6. ClustalW: ClustalW is a program for multiple sequence alignment, which is used to compare and align sequences to identify conserved regions and structural domains.
  7. Cytoscape: Cytoscape is a software tool for the visualization and analysis of biological networks, including protein-protein interaction networks, metabolic pathways, and gene regulatory networks.
  8. R/Bioconductor: R/Bioconductor is a software package for the analysis and visualization of biological data, including gene expression data, microarray analysis, and genomic data analysis.

Overall, these databases and tools are essential for the analysis and interpretation of biological data, and play a critical role in advancing our understanding of the complex processes that underlie life.