Contributors | p. xi |
Capsular Polysaccharides in Escherichia coli | |
Introduction | p. 2 |
Functions of Bacterial Capsules | p. 2 |
Capsular Polysaccharides in E. coli | p. 3 |
E. coli Group 1 Capsules | p. 4 |
E. coli Group 4 Capsules | p. 6 |
E. coli Group 3 Capsules | p. 7 |
E. coli Group 2 capsules | p. 7 |
Genetics and evolution of E. coli Group 2 capsules | p. 8 |
Biosynthesis of E. coli Group 2 capsular polysaccharides | p. 10 |
Export of E. coli Group 2 Polysaccharides | p. 12 |
Group 2 capsular polysaccharide synthesis and export are linked | p. 14 |
Regulation of Capsule Expression in E. coli | p. 16 |
Regulation of the E. coli K30 capsule and expression of colanic acid (Slime) in E. coli K-12 strains | p. 16 |
Regulation of expression of Group 2 (K5) capsule gene clusters | p. 18 |
Conclusions | p. 20 |
References | p. 21 |
Microbial PAH Degradation | |
Introduction | p. 27 |
Polycyclic Aromatic Hydrocarbons (PAHs) | p. 28 |
Toxicity | p. 28 |
Sources of PAHs | p. 33 |
Environmental contamination | p. 33 |
Degradation of PAHs | p. 34 |
Pure culture studies | p. 35 |
Culture-independent analysis | p. 38 |
Marker genes | p. 45 |
Bioremediation of PAH Contaminated Environments | p. 50 |
Factors affecting bioremediation | p. 51 |
Conclusions | p. 53 |
References | p. 54 |
Acid Stress Responses in Listeria monocytogenes | |
Introduction | p. 68 |
Listeriosis | p. 68 |
Acid Tolerance Response (ATR) and Cross Protection | p. 69 |
Acid Resistance and Listerial Survival in Foods | p. 70 |
Acid Resistance and L. monocytogenes Pathogenesis | p. 71 |
Listerial Mechanisms of Acid Resistance | p. 73 |
GAD system | p. 73 |
Arginine and agmatine deiminase systems | p. 76 |
F[subscript 0]F[subscript 1]-ATPase | p. 76 |
Macromolecular protection and repair | p. 77 |
Cell membrane changes | p. 78 |
Sigma B | p. 79 |
LisRK two-component regulatory system | p. 81 |
Conclusion | p. 82 |
References | p. 82 |
Global Regulators of Transcription in Escherichia coli: Mechanisms of Action and Methods for Study | |
Introduction | p. 94 |
An overview of the bacterial multi-subunit RNA polymerase | p. 94 |
DNA recognition by RNA polymerase | p. 94 |
Regulation by Transcription Factors | p. 96 |
An overview of transcription regulators | p. 96 |
Global transcription factors | p. 96 |
Regulation of Transcription by Nucleoid-Associated Proteins | p. 99 |
The nucleoid-associated proteins | p. 99 |
Mechanisms of transcription regulation by Fis, H-NS, and IHF | p. 99 |
A Novel Method for Studying Transcription on a Global Scale | p. 101 |
Overview of chromatin immunoprecipitation | p. 101 |
Application of ChIP-chip to the study of sequence specific transcription factors | p. 102 |
Application of ChIP-chip to the study of nucleoid-associated proteins | p. 105 |
RNA polymerase-omics | p. 106 |
Protocols for ChIP-chip experiments with E. coli | p. 106 |
Concluding Remarks | p. 110 |
References | p. 110 |
The Role of Sigma B ([sigma superscript B]) in the Stress Adaptations of Listeria monocytogenes: Overlaps Between Stress Adaptation and Virulence | |
Listeria monocytogenes: An Adaptable Pathogen | p. 116 |
The Sigma Factors of L. monocytogenes | p. 116 |
Sigma B ([sigma superscript B]) | p. 118 |
Complex protein-protein interactions control [sigma superscript B] activity | p. 118 |
Elucidation of the [sigma superscript B] regulon by proteomics and transcriptomics | p. 121 |
A Central Role for [sigma superscript B] in Adaptation to Stress | p. 122 |
[sigma superscript B] and osmoregulation | p. 122 |
[sigma superscript B] and acid resistance | p. 124 |
[sigma superscript B] is involved in cryotolerance | p. 126 |
[sigma superscript B] affects piezotolerance | p. 126 |
Antimicrobial resistance and [sigma superscript B] | p. 127 |
The role of [sigma superscript B] in resistance to bile | p. 128 |
Does Competition between Sigma Factors Influence Growth Rate in L. monocytogenes? | p. 128 |
Role of [sigma superscript B] in Metabolism | p. 129 |
[sigma superscript B] Plays Important Role in Virulence | p. 130 |
PrfA and the intracellular stages of infection | p. 130 |
Early and extracellular stages of infection | p. 131 |
Conclusions | p. 134 |
References | p. 135 |
Protein Secretion and Membrane Insertion Systems in Bacteria and Eukaryotic Organelles | |
Introduction: Transport Protein Classification | p. 142 |
The Diversity of Protein Translocases in Bacteria and Eukaryotic Organelles | p. 144 |
Complex Inner Membrane Secretory Systems in Bacteria | p. 151 |
Type I (ABC-MFP-OMF-type) protein exporters (Fig. 6.1) | p. 151 |
General secretory translocases (Sec systems; Fig. 6.2) | p. 152 |
Type III flagellar and pathogenicity-related systems (Fig. 6.3) | p. 154 |
Type IV conjugation- and virulence-related (IVSP) systems (Fig. 6.4) | p. 157 |
The putative type VI symbiosis/virulence secretory systems (TC #9.A.34) | p. 159 |
Twin arginine translocation (Tat) systems (Fig. 6.5) | p. 160 |
OMP Translocases of Gram-Negative Bacteria | p. 162 |
The MTB (Fig. 6.6) | p. 162 |
FUP systems | p. 164 |
Autotransporter-1 (AT-1) systems | p. 165 |
Autotransporter-2 (AT-2) systems | p. 165 |
The Intimin/Invasin or Autotransporter-3 Systems | p. 166 |
Two-partner secretion (TPS) systems | p. 167 |
OMP insertion porins (OmpIP) | p. 170 |
Protein Translocases of Eukaryotic Organelles | p. 172 |
MPT complexes (TIM-TOM; TC #3.A.8; Fig. 6.7) | p. 172 |
The CEPT complex (Tic-Toc; TC #3.A.9; Fig. 6.9) | p. 176 |
Comparisons and Overview | p. 179 |
References | p. 183 |
Metabolic Behavior of Bacterial Biological Control Agents in Soil and Plant Rhizospheres | |
Introduction | p. 199 |
Techniques for Studying the Metabolic Behavior of Bacterial Biological Control Agents | p. 201 |
Impact of Soil Edaphic Factors and Indigenous Microbes on Introduced Microbes in the Soil Environment | p. 202 |
Plant Influences on Microbial Metabolism in the Soil Environment | p. 204 |
Conclusion | p. 210 |
References | p. 210 |
Copper Homeostasis in Bacteria | |
Introduction | p. 217 |
The properties of copper | p. 217 |
Copper requiring proteins | p. 218 |
Principles of copper homeostasis | p. 219 |
Mechanisms of Copper Trafficking and Resistance | p. 220 |
P[subscript 1B]-type ATPases | p. 222 |
Copper acquisition | p. 223 |
Copper detoxification | p. 225 |
Sensors of elevated copper levels | p. 231 |
Copper-chaperones | p. 233 |
Copper and Bacterial Pathogenicity | p. 234 |
Copper as a Biocide | p. 237 |
Concluding Remarks | p. 238 |
References | p. 239 |
Pathogen Surveillance Through Monitoring of Sewer Systems | |
Introduction | p. 250 |
Monitoring for human pathogens in sewage | p. 250 |
Potential Biological Agents in Sewage | p. 251 |
Human pathogens secreted in bodily fluids | p. 252 |
Duration of release and concentration in bodily fluids and skin | p. 254 |
Concentration of Biological Agents in Sewage | p. 259 |
Laboratory Methods and Detection | p. 260 |
Detection of pathogens | p. 260 |
Survival of pathogens in sewer systems | p. 261 |
Lessons learned from poliovirus: Monitoring as an early warning system | p. 262 |
Differentiation of vaccine and virulent strains | p. 263 |
Conclusions: The Probability of Detection | p. 264 |
References | p. 266 |
Index | p. 271 |
Contents of Previous Volumes | p. 279 |
Color Plate Section | |
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