Prokaryotes showing extreme GC content have relatively high CAIave values spanning a narrower range. Scatter plot of GC content (x-axis) and CAIave (y-axis) of 773 organisms. Here and in all other figures CAIave is indicated as 'Average CAI'. CAI: Codon Adaptation Index; GC: genome content.
Botzman and Margalit Genome Biology 2011 12:R109 doi:10.1186/gb-2011-12-10-r109