Deinococcus  

What you should know:

Deinococci are extremely radiation-resistant bacteria belonging to the deeply-branching Gram - negatives (Volume 1 of Bergey's Manual). Because of their unusual structure, however, they stain Gram +. Nonetheless, they have a typical Gram-negative cell wall architecture (Outer membrane, no Teichoic acid). Deinococci are chemoheterotrophs.

Classification

Domain Bacteria

    Phylum Deinococcus - Thermus

        Class Deinococci

Bergey's Manual Volume 1: The Archaea and the deeply branching and phototrophic Bacteria

Links

http://www.ornl.gov/TechResources/Human_Genome/graphics/slides/scideinococcus.html