Provides information about the model organism of the social amoeba Dictyostelium discoideum. Dictybase contains the complete genome sequence and expression data for the organism. It offers an easy-to-use interface to navigate between different genomes. The database provides a search interface that permits to combine all genomes for launching a multi-genomic pairwise comparison. All gene models and functional annotation are manually curated from experimental results and comparative multi-genome analyses.