
Figure 1.
Conserved families and unique proteins encoded in the four complete archaeal genomes. (COGs+) Distant homologs of COGs; (NARCHOM) nonarchaeal homologs (only); (unique) proteins without detectable homologs in other species (for details see text); (Af)Archaeoglobus fulgidus; (Ph) Pyrococcus horikoshii; (Mt) Methanobacterium thermoautrophicum; (Mj)Methanococcus jannaschii.











