Genome sequence of the radioresistant bacterium Deinococcus radiodurans R1

The complete genome sequence of the radiation-resistant bacterium Deinococc us radiodurans R1 is composed of two chromosomes (2,648,638 and 412,348 bas e pairs), a megaplasmid (172,466 base pairs), and a small plasmid (45,704 b ase pairs), yielding a total genome of 3,284,156 base pairs. Multiple compo nents distributed on the chromosomes and megaplasmid that contribute to the ability of D. radiodurans to survive under conditions of starvation, oxida tive stress, and high amounts of DNA damage were identified. Deinococcus ra diodurans represents an organism in which all systems for DNA repair, DNA d amage export, desiccation and starvation recovery, and genetic redundancy a re present in one cell.