Detailed studies of the binding mechanism of the Sinorhizobium meliloti transcriptional activator ExpG to DNA

Baumgarth B, Bartels FW, Anselmetti D, Becker A, Ros R (2005)
Microbiology 151(1): 259-268.

Zeitschriftenaufsatz | Veröffentlicht | Englisch
 
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Abstract / Bemerkung
The exopolysaccharide galactoglucan promotes the establishment of symbiosis between the nitrogen-fixing Gram-negative soil bacterium Sinorhizobium meliloti 2011 and its host plant alfalfa. The transcriptional regulator ExpG activates expression of galactoglucan biosynthesis genes by direct binding to the expA1, expG/expD1 and expE1 promoter regions. ExpG is a member of the MarR family of regulatory proteins. Analysis of target sequences of an ExpG(His)6 fusion protein in the exp promoter regions resulted in the identification of a binding site composed of a conserved palindromic region and two associated sequence motifs. Association and dissociation kinetics of the specific binding of ExpG(His)6 to this binding site were characterized by standard biochemical methods and by single-molecule spectroscopy based on the atomic force microscope (AFM). Dynamic force spectroscopy indicated a distinct difference in the kinetics between the wild-type binding sequence and two mutated binding sites, leading to a closer understanding of the ExpG-DNA interaction.
Erscheinungsjahr
2005
Zeitschriftentitel
Microbiology
Band
151
Ausgabe
1
Seite(n)
259-268
ISSN
1350-0872
eISSN
1465-2080
Page URI
https://pub.uni-bielefeld.de/record/1773083

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Baumgarth B, Bartels FW, Anselmetti D, Becker A, Ros R. Detailed studies of the binding mechanism of the Sinorhizobium meliloti transcriptional activator ExpG to DNA. Microbiology. 2005;151(1):259-268.
Baumgarth, B., Bartels, F. W., Anselmetti, D., Becker, A., & Ros, R. (2005). Detailed studies of the binding mechanism of the Sinorhizobium meliloti transcriptional activator ExpG to DNA. Microbiology, 151(1), 259-268. doi:10.1099/mic.0.27442-0
Baumgarth, B., Bartels, F. W., Anselmetti, D., Becker, A., and Ros, R. (2005). Detailed studies of the binding mechanism of the Sinorhizobium meliloti transcriptional activator ExpG to DNA. Microbiology 151, 259-268.
Baumgarth, B., et al., 2005. Detailed studies of the binding mechanism of the Sinorhizobium meliloti transcriptional activator ExpG to DNA. Microbiology, 151(1), p 259-268.
B. Baumgarth, et al., “Detailed studies of the binding mechanism of the Sinorhizobium meliloti transcriptional activator ExpG to DNA”, Microbiology, vol. 151, 2005, pp. 259-268.
Baumgarth, B., Bartels, F.W., Anselmetti, D., Becker, A., Ros, R.: Detailed studies of the binding mechanism of the Sinorhizobium meliloti transcriptional activator ExpG to DNA. Microbiology. 151, 259-268 (2005).
Baumgarth, Birgit, Bartels, Frank Wilco, Anselmetti, Dario, Becker, Anke, and Ros, Robert. “Detailed studies of the binding mechanism of the Sinorhizobium meliloti transcriptional activator ExpG to DNA”. Microbiology 151.1 (2005): 259-268.
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