title: R factor with a mutation in the tetracycline resistance marker.
mesh_terms: D001426:Bacterial Proteins / Q000096:biosynthesis; D002247:Carbon Isotopes; D003864:Depression, Chemical; D004352:Drug Resistance, Microbial; D004926:Escherichia coli / Q000302:isolation & purification* / Q000378:metabolism; D005111:Extrachromosomal Inheritance; D005827:Genetics, Microbial; D007930:Leucine / Q000378:metabolism; D009154:Mutation; D010597:Pharmacogenetics; D013752:Tetracycline / Q000494:pharmacology*
chemical_list: D001426:Bacterial Proteins; D002247:Carbon Isotopes; D013752:Tetracycline; D007930:Leucine