U.S. National Center for Biotechnology Information

U.S. National Library of Medicine

Pubmed

European Bioinformatics Institute

Bioinformatics Centre of National University of Singapore

Central Laboratory of the Research Council

Basic Local Alignment Search Tool - a set of similarity search programs designed to explore all of the available sequence databases regardless of whether the query is protein or DNA.

Fasta3

Scan a protein or DNA sequence library for similar sequences

Computational approaches for analysis of nucleotide and protein sequences

Solving the Protein Folding Problem

Integrates  internet-delivered research tools

Chemical Database Service

Epidemiology