Includes extensive tools for visualization and further analysis. AtGDB is a relational database with an elaborate Web interface designed to allow users to browse the genome and query by sequence similarity, identifiers, or description. The genomic context view allows users to browse a specific genomic region in the context of multiple annotation resources. The display at AtGDB allows users to provide updated annotation upon more in-depth analysis of individual cases. AtGDB adds a convenient sequence-centered view of the genome.