Figure 6From: The genome of the square archaeon Haloquadratum walsbyi : life at the limits of water activityCodon usage in halophilic archaea. Indicated is the percentage of G plus C or A plus T at the different codon positions showing the large difference between H. walsbyi and the other haloarchaea especially at the third codon position. Bars are H. walsbyi (blue), H. marismortui (red), N. pharaonis (yellow) and H. salinarum (purple).Back to article page