ISSN:
1617-4623
Keywords:
OmpR
;
EnvZ
;
Osmoregulation
;
Peptide transport
;
Salmonella typhimurium
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
Notes:
Summary The tppB locus of Salmonella typhimurium encodes the anaerobically-induced tripeptide permease. We have demonstrated that expression of tppB requires the function of the ompR and envZ gene products, originally identified as positive regulatory proteins required for the osmotic regulation of porin expression. Significantly, tppB expression is not osmotically regulated. We have also identified three additional genes whose expression depends on OmpR. Thus OmpR and EnvZ serve a more general regulatory role than has previously been supposed. This study provides the first detailed genetic analysis of the ompB locus of S. typhimurium.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00331499
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