Open AccessGalactose metabolism in gal mutants of Salmonella typhimurium and Escherichia coli
Author(s) -
Hommes R.W.J.,
Loenen W.A.M.,
Neijssel O.M.,
Postma P.W.
Publication year - 1986
Publication title -
fems microbiology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.899
H-Index - 151
eISSN - 1574-6968
pISSN - 0378-1097
DOI - 10.1111/j.1574-6968.1986.tb01693.x
Subject(s) - escherichia coli , galactose , biochemistry , salmonella , mutant , metabolism , microbiology and biotechnology , chemistry , escherichia , biology , bacteria , gene , genetics
We report a new pathway for galactose metabolism in Escherichia coli and Salmonella typhimurium . Growth of gal mutants on galactose is restored by the addition of pyrrolo‐quinoline quinone (PQQ) to the medium. In such strains galactose is oxidized to galactonate by a PQQ‐dependent, membrane‐bound dehydrogenase. A pathway for galactonate metabolism in these organisms has already been described.