Sequence Databases
GenBank® is the NIH genetic sequence database, an annotated collection of all publicly available DNA sequences
http://www.ncbi.nlm.nih.gov/Genbank/index.html
The EMBL Nucleotide Sequence Database (also known as EMBL-Bank) constitutes Europe's primary nucleotide sequence resource.
http://www.ebi.ac.uk/embl/
DNA Databank of Japan
http://www.ddbj.nig.ac.jp/
The International Nucleotide Sequence Databases (INSD) have been developed and maintained collaboratively between DDBJ , EMBL , and GenBank for over 18 years.
http://www.insdc.org