Distribution of the drug metabolism-related genes among the 55 strains. (A) KEGG pathway representation for drug metabolism from the strain Arthrobacter crystallopoietes DSM 20117 possessing the highest number of genes in the category among 55 strains. The green color represents the presence of the gene, grey color represents the absence, blue color represents the non-enzymatic reaction, and the dashed black color represents the unknown pathway. (B) Categorization of the number of strains possessing degradation pathway genes among three types of drug metabolism pathway for Arthrobacter, Pseudarthrobacter, and Glutamicibacter.