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Nucleotide Databases
 The
International Nucleotide Sequence Database Collaboration
This collaboration is a joint operation by EMBL-Bank at the European Bioinformatics Institute (EBI), the DNA Data Bank of Japan (DDBJ) at the Center for Information Biology (CIB) and GenBank at the National Center for Biotechnology Information (NCBI).
    
In Europe,
the vast majority of the nucleotide sequence data produced is collected, organised
and distributed by the EMBL Nucleotide Sequence Database
located at the EBI
in Cambridge UK, an Outstation of the European Molecular Biology Laboratory
(EMBL) in Heidelberg, Germany.
The nucleotide sequence databases are data
repositories, accepting nucleic acid sequence data from the scientific community and making
it freely available. The databases strive for completeness, with the aim of
recording every publicly known nucleic acid sequence. These data are heterogenous,
they vary with respect to the source of the material (e.g. genomic versus cDNA),
the intended quality
(e.g. finished versus single pass sequences), the extent of sequence annotation and
the intended completeness of the sequence relative to its biological target
(e.g. complete versus partial coverage of a gene or a genome).
The nucleotide databases are distributed free of charge over the internet.
DDBJ, GenBank and EMBL-Bank exchange new and updated data on a daily basis to achieve optimal synchronisation. The result is that they contain exactly the same
information, except for sequences that have been added in the last 24 hours.
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