title: The use of auxotrophic mutants to study the possibility of the interconversion of cysteine and methionine in Pasteurella pestis.
mesh_terms: D002854:Chromatography, Paper; D003540:Cystathionine / Q000378:metabolism; D003545:Cysteine / Q000378:metabolism*; D005787:Gene Frequency; D006711:Homocystine / Q000378:metabolism; D008715:Methionine / Q000378:metabolism*; D009154:Mutation; D009607:Nitrosourea Compounds / Q000494:pharmacology; D015010:Yersinia pestis / Q000187:drug effects / Q000378:metabolism*
chemical_list: D009607:Nitrosourea Compounds; D003540:Cystathionine; D006711:Homocystine; D008715:Methionine; D003545:Cysteine