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| Content Provider | PubMed Central |
|---|---|
| Author | Łochowska, Anna Iwanicka-nowicka, Roksana Agata, Zielak Anna, Modelewska Thomas, Mark S. Hryniewicz, Monika M. |
| Copyright Year | 2011 |
| Abstract | The genome of Burkholderia cenocepacia contains two genes encoding closely related LysR-type transcriptional regulators, CysB and SsuR, involved in control of sulfur assimilation processes. In this study we show that the function of SsuR is essential for the utilization of a number of organic sulfur sources of either environmental or human origin. Among the genes upregulated by SsuR identified here are the tauABC operon encoding a predicted taurine transporter, three tauD-type genes encoding putative taurine dioxygenases, and atsA encoding a putative arylsulfatase. The role of SsuR in expression of these genes/operons was characterized through (i) construction of transcriptional reporter fusions to candidate promoter regions and analysis of their expression in the presence/absence of SsuR and (ii) testing the ability of SsuR to bind SsuR-responsive promoter regions. We also demonstrate that expression of SsuR-activated genes is not repressed in the presence of inorganic sulfate. A more detailed analysis of four SsuR-responsive promoter regions indicated that ∼44 bp of the DNA sequence preceding and/or overlapping the predicted −35 element of such promoters is sufficient for SsuR binding. The DNA sequence homology among SsuR “recognition motifs” at different responsive promoters appears to be limited. |
| Related Links | http://dx.doi.org/10.1128/JB.00483-10 |
| Starting Page | 1843 |
| File Format | |
| ISSN | 10985530 |
| e-ISSN | 10985530 |
| Journal | Journal of Bacteriology |
| Issue Number | 8 |
| Volume Number | 193 |
| Language | English |
| Publisher | American Society for Microbiology |
| Publisher Date | 2011-04-01 |
| Access Restriction | Open |
| Rights Holder | American Society for Microbiology |
| Subject Keyword | Research in Higher Education |
| Content Type | Text |
| Resource Type | Article |
| Subject | Molecular Biology Microbiology |
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