title: A modifier mutation affecting utilization of mannitol in pneumococcus.
abstract: The altered growth of a pneumococcal mutant containing marker M, which confers ability to utilize mannitol, and a modifier gene is reported. The modifier gene is closely linked to the M gene and imposes a requirement for growth in 0.4% glucose before growth in mannitol medium. The tentative position of the M gene of pneumococcus is ery-r str-r M sul-rd.
mesh_terms: D005796:Genes; D008040:Genetic Linkage; D005947:Glucose / Q000378:metabolism; D008353:Mannitol / Q000378:metabolism*; D009154:Mutation; D010641:Phenotype; D013296:Streptococcus pneumoniae / Q000254:growth & development / Q000378:metabolism*
chemical_list: D008353:Mannitol; D005947:Glucose