Table 1 The online genome-annotation and gene-listing resources described in this article

NCBI XM sequences (from the non-redundant (NR) database

http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=Protein

Non-redundant protein entries from a variety of sources, including translations from annotated coding regions in GenBank and RefSeq

RefSeq

http://www.ncbi.nlm.nih.gov/RefSeq/

A comprehensive, integrated, non-redundant set of sequences, including genomic DNA, transcript (RNA), and protein products, for major model organisms

Ensembl

http://www.ensembl.org/

Annotated metazoan genomes

RIKEN FANTOM cDNA database

http://fantom.gsc.riken.jp/

Functional annotation of mouse full-length cDNA clones

Gene Ontology

http://www.geneontology.org

Genes annotated according to three structured networks of defined terms