The database incorporates data from over 2400 organisms and includes over one million proteins representing significant taxonomic diversity spanning prokaryotes, eukaryotes and viruses. Although the goal is to provide a comprehensive dataset representing the complete sequence information for any given species, the database pragmatically includes sequence data that are currently publicly available in the archival databases. The National Center for Biotechnology Information (NCBI) Reference Sequence (RefSeq) database () provides a non-redundant collection of sequences representing genomic data, transcripts and proteins. NCBI Reference Sequence (RefSeq): a curated non-redundant sequence database of genomes, transcripts and proteins ![]() Blitz, Fasta, BLAST) are available which allow external users to compare their own sequences against the latest data in the EMBL Nucleotide Sequence Database and SWISS-PROT. For sequence similarity searching a variety of tools (e.g. EBI’s Sequence Retrieval System (SRS), a network browser for databanks in molecular biology, integrates and links the main nucleotide and protein databases plus many specialized databases. Network services allow free access to the most up-to-date data collection via ftp, email and World Wide Web interfaces. Database releases are produced quarterly. Webin is the preferred web-based submission system for individual submitters, whilst automatic procedures allow incorporation of sequence data from large-scale genome sequencing centres and from the European Patent Office (EPO). The major contributors to the EMBL database are individual authors and genome project groups. ![]() Data is exchanged amongst the collaborating databases on a daily basis. ![]() The EMBL Nucleotide Sequence Database () is maintained at the European Bioinformatics Institute (EBI) in an international collaboration with the DNA Data Bank of Japan (DDBJ) and GenBank at the NCBI (USA). Stoesser, Guenter Baker, Wendy van den Broek, Alexandra Camon, Evelyn Garcia-Pastor, Maria Kanz, Carola Kulikova, Tamara Lombard, Vincent Lopez, Rodrigo Parkinson, Helen Redaschi, Nicole Sterk, Peter Stoehr, Peter Tuli, Mary Ann
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