GenBank identifiers are used to index GenBank sequence entries, and thus can be used to retrieve information about a particular gene or DNA sequence from the GenBank database. This information also includes links to similar sequence entries and other public databases.
GenBank is the National Institute of Health (NIH) genetic sequence database, an annotated collection of all publicly available DNA sequences. It is maintained by the National Center for Biotechnology Information (NCBI) within the National Institute of Health (NIH). It is part of the International Nucleotide Sequence Database Collaboration, which also includes the DNA DataBank of Japan (DDBJ) and the European Molecular Biology Laboratory (EMBL).
The GenBank database and related resources can be freely accessed via the National Center for Biotechnology Information (NCBI) home page at the following URL (see Disclaimer):