Complete genomes in WWW Entrez: data representation and analysis

Motivation: The large amount of genome sequence data now publicily availabl e can be accessed through the National Centre for Biotechnology Information (NCBI) Entrez search and retrieval system, making it possible to explore d ata of a breadth and scope exceeding traditional flatfile views. Results: Here we report recent improvements for completely sequenced genome s from viruses, bacteria, and yeast. Flexible web based views, precomputed relationships, and immediate access to analytical tools provide scientists with a portal into the new insights to be gained from completed genome sequ ences.