 When doing global genome comparisons between multiple "P. stutzeri" strains, it has been found that many of the genomic regions of this bacterium's genome are conserved between varying strains.One of the strains that has been found to vary is strain RCH2.This strain has an extra 244 genes which are believed to aid the bacterium in chemotaxis and in the formation of both a pilus and the pyruvate/ 2-oxoglutarate complex.