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Table of Contents

October 2018; Volume 200,Issue 19

Spotlight

  • Free
    Articles of Significant Interest in This Issue
    Spotlight
    Articles of Significant Interest in This Issue

Minireview

  • After the Fact(or): Posttranscriptional Gene Regulation in Enterohemorrhagic <span class="named-content genus-species" id="named-content-1">Escherichia coli</span> O157:H7
    Minireview
    After the Fact(or): Posttranscriptional Gene Regulation in Enterohemorrhagic Escherichia coli O157:H7

    To adapt to ever-changing environments, pathogens quickly alter gene expression. This can occur through transcriptional, posttranscriptional, or posttranslational regulation.

    Amber B. Sauder, Melissa M. Kendall

Research Articles

  • Open Access
    Fluorescence-Based Detection of Natural Transformation in Drug-Resistant <span class="named-content genus-species" id="named-content-1">Acinetobacter baumannii</span>
    Research Article | Spotlight
    Fluorescence-Based Detection of Natural Transformation in Drug-Resistant Acinetobacter baumannii

    Antibiotic resistance is a pressing global health concern with the rise of multiple and panresistant pathogens. The rapid and unfailing resistance to multiple antibiotics of the nosocomial agent Acinetobacter baumannii, notably to carbapenems, prompt to understand the mechanisms behind acquisition of new antibiotic resistance genes. Natural transformation, one of the...

    Anne-Sophie Godeux, Agnese Lupo, Marisa Haenni, Simon Guette-Marquet, Gottfried Wilharm, Maria-Halima Laaberki, Xavier Charpentier
  • Open Access
    Cross Talk among Transporters of the Phosphoenolpyruvate-Dependent Phosphotransferase System in <span class="named-content genus-species" id="named-content-1">Bacillus subtilis</span>
    Research Article
    Cross Talk among Transporters of the Phosphoenolpyruvate-Dependent Phosphotransferase System in Bacillus subtilis

    The phosphoenolpyruvate-dependent phosphotransferase system (PTS) not only is a carbohydrate uptake system in B. subtilis but also plays an important role in sensing the nutrient fluctuation in the medium. This sensing system enables the cells to respond to these fluctuations properly. The PTS transporters have a pivotal role in this sensing system since they are...

    Kambiz Morabbi Heravi, Josef Altenbuchner
  • The Chaperone Activities of DsbG and Spy Restore Peptidoglycan Biosynthesis in the <em>elyC</em> Mutant by Preventing Envelope Protein Aggregation
    Research Article
    The Chaperone Activities of DsbG and Spy Restore Peptidoglycan Biosynthesis in the elyC Mutant by Preventing Envelope Protein Aggregation

    Peptidoglycan biosynthesis is a dynamic and well-controlled pathway. The molecular assembly of PG and the regulatory pathways ensuring its maintenance are still not well understood. Here we studied the newly discovered Escherichia coli factor ElyC, which is important for PG biosynthesis at low temperatures. We revealed an important protein-folding defect in the Δ...

    Imène Kouidmi, Laura Alvarez, Jean François Collet, Felipe Cava, Catherine Paradis-Bleau
  • Open Access
    <span class="named-content genus-species" id="named-content-1">Rickettsia</span> Lipid A Biosynthesis Utilizes the Late Acyltransferase LpxJ for Secondary Fatty Acid Addition
    Research Article
    Rickettsia Lipid A Biosynthesis Utilizes the Late Acyltransferase LpxJ for Secondary Fatty Acid Addition

    Lipopolysaccharide (LPS) triggers an inflammatory response through the TLR4-MD2 receptor complex and inflammatory caspases, a process mediated by the lipid A moiety of LPS. Species of Rickettsia directly engage both extracellular and intracellular immunosurveillance, yet little is known about rickettsial lipid A. Here, we demonstrate that the alternative lipid A...

    Mark L. Guillotte, Joseph J. Gillespie, Courtney E. Chandler, M. Sayeedur Rahman, Robert K. Ernst, Abdu F. Azad
  • Redirection of Metabolism in Response to Fatty Acid Kinase in <span class="named-content genus-species" id="named-content-1">Staphylococcus aureus</span>
    Research Article | Spotlight
    Redirection of Metabolism in Response to Fatty Acid Kinase in Staphylococcus aureus

    The fatty acid kinase, FakA, of Staphylococcus aureus plays several important roles in the cell. FakA is important for the activation of the SaeRS two-component system and secreted virulence factors like α-hemolysin. However, the contribution of FakA to cellular metabolism has not been explored. Here, we highlight the metabolic consequence of removal of FakA from the...

    Zachary DeMars, Jeffrey L. Bose
  • Open Access
    Identification of Different Putative Outer Membrane Electron Conduits Necessary for Fe(III) Citrate, Fe(III) Oxide, Mn(IV) Oxide, or Electrode Reduction by <span class="named-content genus-species" id="named-content-1">Geobacter sulfurreducens</span>
    Research Article
    Identification of Different Putative Outer Membrane Electron Conduits Necessary for Fe(III) Citrate, Fe(III) Oxide, Mn(IV) Oxide, or Electrode Reduction by Geobacter sulfurreducens

    Gram-negative metal-reducing bacteria utilize electron conduits, chains of redox proteins spanning the outer membrane, to transfer electrons to the extracellular surface. Only one pathway for electron transfer across the outer membrane of Geobacter sulfurreducens has been linked to Fe(III) reduction. However,...

    Fernanda Jiménez Otero, Chi Ho Chan, Daniel R. Bond
  • Coherent Feedforward Regulation of Gene Expression by <span class="named-content genus-species" id="named-content-1">Caulobacter</span> σ<sup>T</sup> and GsrN during Hyperosmotic Stress
    Research Article
    Coherent Feedforward Regulation of Gene Expression by Caulobacter σT and GsrN during Hyperosmotic Stress

    Bacteria inhabit diverse niches and must adapt their physiology to constant environmental fluctuations. A major response to environmental perturbation is to change gene expression. Caulobacter and other alphaproteobacteria initiate a complex gene expression program known as the general stress response (GSR) under conditions including oxidative stress, osmotic stress,...

    Matthew Z. Tien, Benjamin J. Stein, Sean Crosson
  • More than Rotating Flagella: Lipopolysaccharide as a Secondary Receptor for Flagellotropic Phage 7-7-1
    Research Article | Spotlight
    More than Rotating Flagella: Lipopolysaccharide as a Secondary Receptor for Flagellotropic Phage 7-7-1

    Flagellotropic bacteriophages belong to the tailed-phage order Caudovirales, the most abundant phages in the virome. While it is known that these viruses adhere to the bacterial flagellum and use flagellar rotation to reach the cell surface, their infection mechanisms are poorly understood. Characterizing flagellotropic-phage–host interactions is crucial to...

    Floricel Gonzalez, Richard F. Helm, Katherine M. Broadway, Birgit E. Scharf
  • Inhibition of the Protein Phosphatase CppA Alters Development of <span class="named-content genus-species" id="named-content-1">Chlamydia trachomatis</span>
    Research Article
    Inhibition of the Protein Phosphatase CppA Alters Development of Chlamydia trachomatis

    Chlamydia is a significant cause of disease in humans, including sexually transmitted infections, the ocular infection trachoma, and pneumonia. Despite the critical roles of protein phosphatases in bacterial physiology, their function in pathogenesis is less clear. Our findings demonstrate that CppA, a broad-specificity type 2C protein phosphatase (PP2C), is critical...

    Ja E. Claywell, Lea M. Matschke, Kyle N. Plunkett, Derek J. Fisher

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Journal of Bacteriology: 200 (19)

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volume 200, issue 19
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  • Lag Phase Is a Dynamic, Organized, Adaptive, and Evolvable Period That Prepares Bacteria for Cell Division
  • Type II Toxin-Antitoxin Systems: Evolution and Revolutions
  • Posttranscriptional Regulation of tnaA by Protein-RNA Interaction Mediated by Ribosomal Protein L4 in Escherichia coli
  • Light Modulates the Physiology of Nonphototrophic Actinobacteria
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