Genbank http://www.ncbi.nlm.nih.gov/Genbank/index.html
The largest publicly available biomolecular database hosted by the National Library of Medicine.
PubChem http://pubchem.ncbi.nlm.nih.gov/
A Biochemical databases started quite recently by the National Library of Medicine.
UniProt http://www.ebi.ac.uk/uniprot/index.html
This database is the result of a recent merger of three important protein databases.
GigaDB http://gigadb.org
Contains discoverable, trackable, and citable data that have been assigned DOIs and are available for public download and use.
ISRIC Soil Data http://www.isric.org/content/data
A wide range of soil datasets can be queried using ISRIC's metadata service. Materials developed by ISRIC are copyrighted yet freely available to the scientific community and other non-commercial groups (see the Data Policy)
An overview of the most important biomolecular databases each year is provided in the
Database issue of NAR, and their database database overview.
WG 20130609