Gene regulation in Streptococcus pneumoniae - RePub - Erasmus ...

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CHAPTER 7 Pneumococcal gene regulatory systems controlling nitrogen metabolism and virulence Gene regulation and metabolism in Streptococcus pneumoniae Wouter T. Hendriksen, Peter W. M. Hermans, and Hester J. Bootsma (Manuscript in preparation) 183
Chapter 7 Abstract 184 184 Efficient nutritional gene regulation is essential for bacteria in order to sustain in and adapt to their continuously changing niches. Transcriptional regulators play a crucial role in orchestrating gene expression as a reaction to their direct environment. In Gram-positive bacteria, nitrogen metabolism has been studied extensively and key transcriptional regulators have been identified. In addition to metabolic genes, these regulators also affect expression of virulence genes, suggesting that these processes are intertwined in bacteria and tightly controlled to increase fitness while residing in a particular niche. In this review, we discuss the role of two transcriptional regulators, GlnR and CodY, in nitrogen metabolism of Gram- positive bacteria in general, and in the context of virulence in Streptococcus pneumoniae in particular.
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Gene regulation in Streptococcus pn
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Cover image by Duve van Boggelen (w
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Promotiecommissie Promotoren: Prof.
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CHAPTER 1 Introduction 7
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Introduction Figure 1. Infections c
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Interestingly, autolysis induced by
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histidine kinase is the sensor prot
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metabolism are often required for v
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egulatory systems, aiming to elucid
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11. Cockeran, R., A. J. Theron, H.
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33. Li, S., S. J. Kelly, E. Lamani,
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53. Romero, P., R. Lopez, and E. Ga
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CHAPTER 2 Regulation of gene expres
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Introduction Streptococcus pneumoni
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Materiaals and Meethods Gene regula
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(Invitrogen), 0.2 mM aminoallyl dUT
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Isolation of pneumococcal RNA durin
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Resultss and Discuussion Gene regul
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Table 1. Genes regulated by RR09 in
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phosphofructokinase, and a fructose
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Figure 4. Expression of rlrA and rr
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correlated well with our in vitro m
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Figure 7. Bacterial loads in blood
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Acknowledgments This work was suppo
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10. Ibrahim, Y. M., A. R. Kerr, J.
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genome sequence of a virulent isola
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Gene regulation by RR09 in S. pneum
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Gene regulation by RR09 in S. pneum
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Table S4. Genes up- and downregulat
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Table S6. Genes up- and downregulat
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Chapter 3 Abstract 62 62 Previous s
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Chapter 3 between the wild-type and
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Chapter 3 S. pneumoniae TIGR4 by CS
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Chapter 3 performance liquid chroma
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Chapter 3 Results Transcriptional a
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Chapter 3 Table 3. Differentially e
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Chapter 3 Figure 2. Colonization mo
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Chapter 3 than the D39ΔpsaR-infect
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Chapter 3 effect was more severe fo
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Chapter 3 in TIGR4ΔpsaR. However,
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Chapter 3 References 1. Adrian, P.
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Chapter 3 21. Hemsley, C., E. Joyce
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Chapter 3 40. McCluskey, J., J. Hin
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CHAPTER 4 CodY of Streptococcus pne
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Introduction Bacteria encounter var
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Materials and Methods Bacterial str
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Table 2. Oligonucleotide primers us
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The CodY regulon of S. pneumoniae I
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The CodY regulon of S. pneumoniae w
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Accession numbers The microarray da
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Table 3. Differentially expressed g
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Binding of CodY to target promoters
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The CodY regulon of S. pneumoniae E
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The CodY regulon of S. pneumoniae F
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Discussion CodY has been described
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levels of adherence in D39. Using a
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References The CodY regulon of S. p
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Glass. 2001. Genome of the bacteriu
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40. Shivers, R. P., S. S. Dineen, a
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CHAPTER 5 Regulation of glutamine a
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Introduction Regulation of nitrogen
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Materials and Methods Nitrogen Meta
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TK136 D39 Δcps; Km R capsule-less
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gene from pORI28, was fused to the
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Construction of lacZ fusions Chromo
Page 134 and 135: Enzyme assays Cell-free extracts, u
Page 136 and 137: Reverse-transcriptase PCR RNA isola
Page 138 and 139: Table 3. Summary of transcriptome c
Page 140 and 141: effect caused by altered intracellu
Page 142 and 143: examine whether zwf is only transcr
Page 144 and 145: (http://www.bd.com/ds/technicalCent
Page 146 and 147: H6-GlnR alone at the concentration
Page 148 and 149: Discussion In this study, we charac
Page 150 and 151: Acknowledgements TK, JB and HB are
Page 152 and 153: 11. den Hengst, C. D., S. A. van Hi
Page 154 and 155: Nitrogen Metabolism in S. pneumonia
Page 156 and 157: 52. Wray, L. V., Jr., J. M. Zalieck
Page 158 and 159: CHAPTER 6 Site-specific contributio
Page 160 and 161: Introduction GlnR-regulon and pneum
Page 162 and 163: Materials and Methods Bacterial str
Page 164 and 165: eferred to as t=0. Bacteriology res
Page 166 and 167: Results GlnR-regulon and pneumococc
Page 168 and 169: Figure 3. Colonization model. Bacte
Page 170 and 171: GlnR-regulon and pneumococcal virul
Page 172 and 173: Table 2. Differentially expressed g
Page 174 and 175: Discussion The ability to adequatel
Page 176 and 177: The microarray data showed that pre
Page 178 and 179: Acknowledgments WTH is supported by
Page 180 and 181: 12. Ibrahim, Y. M., A. R. Kerr, J.
Page 182 and 183: 33. Zalieckas, J. M., L. V. Wray, J
Page 186 and 187: Introduction Regulation of gene exp
Page 188 and 189: Gene regulation and metabolism in S
Page 190 and 191: makes it possible for the pneumococ
Page 192 and 193: A CcpA homologue exists in the pneu
Page 194 and 195: double mutant, suggesting direct re
Page 196 and 197: References Gene regulation and meta
Page 198 and 199: 23. Kerr, A. R., P. V. Adrian, S. E
Page 200 and 201: 45. Sonenshein, A. L. 2005. CodY, a
Page 202 and 203: CHAPTER 8 Summarizing discussion 20
Page 204 and 205: that the observed virulence phenoty
Page 206 and 207: CodY was found to be required for a
Page 208 and 209: References Summarizing discussion 1
Page 210 and 211: Summarizing discussion 21. Orihuela
Page 212 and 213: Samenvatting en discussie Curriculu
Page 214 and 215: Samenvatting en discussie kunnen ge
Page 216 and 217: Bevindingen die dit onderbouwen, we
Page 218 and 219: Curriculum Vitae Curriculum Vitae W
Page 220 and 221: Dankwoord Jeetje, dat het dan toch
Page 222: oekje en ik kijk uit naar de bijbeh
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