Zobrazeno 1 - 10
of 34
pro vyhledávání: '"Stephen D. Minchin"'
Publikováno v:
Methods. 47:6-12
In bacteria, the expression of transcription units is controlled by regulatory regions, that contain one or more promoters and binding sites for regulatory proteins that activate or repress expression in response to different signals. In this chapter
Publikováno v:
Biochimica et Biophysica Acta (BBA) - Gene Structure and Expression. 1628:22-29
Connexin32 (Cx32) is the predominant gap junction protein expressed in adult rat hepatocytes. This study investigated transcriptional regulation of the rat Cx32 gene in MH 1 C 1 rat hepatoma cells using transient expression assays in conjunction with
Publikováno v:
FEBS Letters. 544:199-205
Previous work has shown that the base sequence of the DNA segment immediately upstream of the -10 hexamer at bacterial promoters (the extended -10 element) can make a significant contribution to promoter strength. Guided by recently published structu
Publikováno v:
Nucleic Acids Research. 27:2051-2056
We have studied the role of the C-terminal domain of the alpha subunit (alphaCTD) of Escherichia coli RNA polymerase during transcription initiation at promoters lacking an UP-element. The temperature requirement for open complex formation was used a
Autor:
Stephen J. W. Busby, Claude F. Meares, Nobuyuki Fujita, Jeffrey T. Owens, Jonathan A. Bown, Akira Ishihama, Stephen D. Minchin
Publikováno v:
Journal of Biological Chemistry. 274:2263-2270
A cysteine-tethered DNA cleavage agent has been used to locate the position of region 2.5 of ς70 in transcriptionally competent complexes between Escherichia coli RNA polymerase and promoters. In this study we have engineered ς70 to introduce a uni
Publikováno v:
The EMBO Journal. 16:4034-4040
At some bacterial promoters, a 5'-TG-3' sequence element, located one base upstream of the -10 hexamer element, provides an essential motif necessary for transcription initiation. We have identified a mutant of the Escherichia coli RNA polymerase sig
Publikováno v:
Annual review of microbiology. 66
Bacteria use a variety of mechanisms to direct RNA polymerase to specific promoters in order to activate transcription in response to growth signals or environmental cues. Activation can be due to factors that interact at specific promoters, thereby
Publikováno v:
European Journal of Biochemistry. 225:1195-1201
We have overexpressed human cardiac troponin-I in Escherichia coli. Initially, protein expression was not detected in the bacterial cell extracts. Systematic deletion of the N-terminal region of the protein generated a series of truncated mutants whi
Autor:
Helen D. Burns, Stephen D. Minchin
Publikováno v:
Nucleic Acids Research. 22:3840-3845
We have studied the role of extended protein DNA contacts and DNA topology on the ability of Escherichia coli RNA polymerase to form open complexes at several related promoters. The -35 region of several Escherichia coli promoters do not have homolog
Autor:
Steve Busby, Stephen D. Minchin
Publikováno v:
Biochemical Journal. 289:771-775
Methylation-interference assays have been used to identify guanine residues that make important contacts with RNA polymerase during open-complex formation at two related Escherichia coli promoters. Methylation of lower-strand G-31 at a gal consensus