DDBJ
DDBJ
http://www.ddbj.nig.ac.jp/
EMBL
Site for the embl database including documentation and how to submit data to embl
http://www.ebi.ac.uk/embl/
GenBank
Genbank is a database of nucleotide sequences.
http://www.ncbi.nlm.nih.gov/genbank/index.html