O2 as the regulatory signal for FNR-dependent gene regulation in Escherichia coli
نویسندگان
چکیده
منابع مشابه
Transcription regulation by tandem-bound FNR at Escherichia coli promoters.
FNR is an Escherichia coli transcription factor that regulates the transcription of many genes in response to anaerobiosis. We have constructed a series of artificial FNR-dependent promoters, based on the melR promoter, in which a consensus FNR binding site was centered at position -41.5 relative to the transcription start site. A second consensus FNR binding site was introduced at different up...
متن کاملControl of FNR function of Escherichia coli by O2 and reducing conditions.
The synthesis of the enzymes constituting the electron transport chain of Escherichia coli is controlled by electron acceptors in order to achieve high ATP yields and high metabolic rates as well. High ATP yields (or efficiency) are obtained by the use of electron acceptors for respiration which allow high ATP yields, preferentially O2, and nitrate in the absence of O2. The rate of metabolism i...
متن کاملRegulation of the Escherichia coli lrp gene.
Lrp (leucine-responsive regulatory protein) is a major Escherichia coli regulatory protein which regulates expression of a number of operons, some negatively and some positively. This work relates to a characterization of lrp, the gene encoding Lrp. Nucleotide sequencing established that the coding regions of lrp and trxB (encoding thioredoxin reductase) are separated by 543 bp and that the two...
متن کاملSpacing requirements for transcription activation by Escherichia coli FNR protein.
We cloned a consensus DNA site for the Escherichia coli FNR protein at different locations upstream of the E. coli melR promoter. FNR can activate transcription initiation at the melR promoter when the FNR binding site is centered around 41, 61, 71, 82, and 92 bp upstream from the transcription start. The SF73 positive control amino acid substitution in FNR interfered with transcription activat...
متن کاملCharacterization of the Escherichia coli K-12 ydhYVWXUT operon: regulation by FNR, NarL and NarP.
In Escherichia coli K-12 the expression of many genes is controlled by the oxygen-responsive transcription factor FNR and the nitrate- and nitrite-responsive two-component systems NarXL and NarPQ. Here, the ydhY gene is shown to be the first gene of a six-gene operon (ydhYVWXUT) that encodes proteins predicted to be components of an oxidoreductase. Mapping the ydhY-T transcript start and site-d...
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ژورنال
عنوان ژورنال: Journal of Bacteriology
سال: 1996
ISSN: 0021-9193,1098-5530
DOI: 10.1128/jb.178.15.4515-4521.1996