UniProtKB/Swiss-Prot provides annotated entries for many species, but concentrates on the annotation of entries from model organisms of distinct taxonomic groups to ensure the presence of high quality annotation for representative members of all protein families: Human and other mammalsNon-mammalian vertebrates: Xenopus, ZebrafishBacteria and ArchaeaPlantsFungiVirusesToxinsDictyosteliumArthropods: Drosophila, mosquitoC. elegans and C. briggsae