Genome update: sigma factors in 240 bacterial genomes

Genomes of the month Ten new microbial genomes were published since the last ‘Genome Update’ column was written. The collection of this month’s prokaryotic genomes, listed in Table 1, consists of one archaeon (Sulfolobus acidocaldarius) and five bacteria (Corynebacterium jeikeium, Haemophilus influenzae, Pseudomonas fluorescens, Rickettsia felis and Xanthomonas campestris). In addition, four microbial eukaryotic genomes have been published: Dictyostelium discoideum AX4 (Eichinger et al., 2005), Theileria annulata (Gardner et al., 2005), Theileria parvarich (Pain et al., 2005) and Toxoplasma gondii (Khan et al., 2005).