Accession number (bioinformatics)

In bioinformatics, an accession number is a unique identifier assigned to a specific biological sequence or data entry in various databases, such as nucleotide and protein sequence databases. This identifier allows researchers to easily reference, retrieve, and share specific sequences or data associated with biological research. Accession numbers are commonly used in databases like: 1. **GenBank**: A nucleotide sequence database maintained by the National Center for Biotechnology Information (NCBI). 2. **EMBL**: The European Molecular Biology Laboratory database.