Open AccessA regulatory mutant of the trimethylamine N ‐oxide reductase of Escherichia coli K12
Author(s) -
Pascal MarieClaire,
Lepelletier Michèle,
Giordano Gérard,
Chippaux Marc
Publication year - 1991
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.1574-6968.1991.tb04459.x
Subject(s) - escherichia coli , mutant , reductase , gene , gene product , biochemistry , chemistry , structural gene , biology , microbiology and biotechnology , gene expression , enzyme
Summary A mutant of Escherichia coli was isolated in which the trimethylamine N ‐oxide (TMAO) reductase activity is lost and the inducible TMAO reductase protein is absent. The lack of the gene product specifically prevents the expression of torA::lacZ fusion indicating a transcriptional control of torA , the TMAO reductase structural gene. The gene designated torR was mapped at 22 min on the chromosome.