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Advanced Search

  • Home
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    • Special Series: Sponsored Minireviews and Video Abstracts
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  • Topics
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Latest Articles

  • Formula Diet Alters the Ileal Metagenome and Transcriptome at Weaning and during the Postweaning Period in a Porcine Model
    Research Article | Host-Microbe Biology
    Formula Diet Alters the Ileal Metagenome and Transcriptome at Weaning and during the Postweaning Period in a Porcine Model

    Exclusive human milk (HM) breastfeeding for the first 6 months of age in infants is recommended to improve health outcomes during early life and beyond. When women are unable to provide sufficient HM, milk formula (MF) is often recommended as a complementary or alternative source of nutrition. Previous studies in piglets demonstrated that MF alters the gut microbiome and induces inflammatory cytokine production. The links between MF...

    Ahmed A. Elolimy, Charity Washam, Stephanie Byrum, Celine Chen, Harry Dawson, Anne K. Bowlin, Christopher E. Randolph, Manish K. Saraf, Laxmi Yeruva
    4 Aug 2020
  • Privatization of Biofilm Matrix in Structurally Heterogeneous Biofilms
    Research Article | Ecological and Evolutionary Science
    Privatization of Biofilm Matrix in Structurally Heterogeneous Biofilms

    Biofilms are communities of bacteria protected by a self-produced extracellular matrix. The detrimental effects of nonproducing individuals on biofilm development raise questions about the dynamics between community members, especially when isogenic nonproducers exist within wild-type populations. We asked ourselves whether phenotypic nonproducers impact biofilm robustness, and where and when this heterogeneity of matrix gene expression...

    Simon B. Otto, Marivic Martin, Daniel Schäfer, Raimo Hartmann, Knut Drescher, Susanne Brix, Anna Dragoš, Ákos T. Kovács
    4 Aug 2020
  • Distinct Bacterial Pathways Influence the Efficacy of Antibiotics against <span class="named-content genus-species" id="named-content-1">Mycobacterium tuberculosis</span>
    Research Article | Host-Microbe Biology
    Distinct Bacterial Pathways Influence the Efficacy of Antibiotics against Mycobacterium tuberculosis

    Understanding how Mycobacterium tuberculosis survives during antibiotic treatment is necessary to rationally devise more effective tuberculosis (TB) chemotherapy regimens. Using genome-wide mutant fitness profiling and the mouse model of TB, we identified genes that alter antibiotic efficacy specifically in the infection environment and associated several of these...

    Michelle M. Bellerose, Megan K. Proulx, Clare M. Smith, Richard E. Baker, Thomas R. Ioerger, Christopher M. Sassetti
    4 Aug 2020
  • <span class="named-content genus-species" id="named-content-1">Escherichia coli</span> Has a Unique Transcriptional Program in Long-Term Stationary Phase Allowing Identification of Genes Important for Survival
    Editor's Pick Research Article | Molecular Biology and Physiology
    Escherichia coli Has a Unique Transcriptional Program in Long-Term Stationary Phase Allowing Identification of Genes Important for Survival

    Experimental evolution studies have elucidated evolutionary processes, but usually in chemically well-defined and/or constant environments. Using complex environments is important to begin to understand how evolution may occur in natural environments, such as soils or within a host. However, characterizing the stresses that cells experience in these complex environments can be challenging. One way to approach this is by determining how...

    Karin E. Kram, Autumn L. Henderson, Steven E. Finkel
    4 Aug 2020
  • Coevolutionary Analysis Reveals a Conserved Dual Binding Interface between Extracytoplasmic Function σ Factors and Class I Anti-σ Factors
    Research Article | Molecular Biology and Physiology
    Coevolutionary Analysis Reveals a Conserved Dual Binding Interface between Extracytoplasmic Function σ Factors and Class I Anti-σ Factors

    In the bacterial world, extracytoplasmic function σ factors (ECFs) are the most widespread family of alternative σ factors, mediating many cellular responses to environmental cues, such as stress. This work uses a computational approach to investigate how these σ factors interact with class I anti-σ factors—the most abundant regulators of ECF activity. By comprehensively classifying the anti-σs into phylogenetic groups and by comparing...

    Delia Casas-Pastor, Angelika Diehl, Georg Fritz
    4 Aug 2020
  • T3SEpp: an Integrated Prediction Pipeline for Bacterial Type III Secreted Effectors
    Research Article | Host-Microbe Biology
    T3SEpp: an Integrated Prediction Pipeline for Bacterial Type III Secreted Effectors

    Type III secreted effector (T3SE) prediction remains a big computational challenge. In practical applications, current software tools often suffer problems of high false-positive rates. One of the causal factors could be the relatively unitary type of biological features used for the design and training of the models. In this research, we made a comprehensive survey on the sequence-based features of T3SEs, including signal sequences,...

    Xinjie Hui, Zewei Chen, Mingxiong Lin, Junya Zhang, Yueming Hu, Yingying Zeng, Xi Cheng, Le Ou-Yang, Ming-an Sun, Aaron P. White, Yejun Wang
    4 Aug 2020
  • Genome-Wide Analysis of RNA Decay in the Cyanobacterium <em>Synechococcus</em> sp. Strain PCC 7002
    Research Article | Molecular Biology and Physiology
    Genome-Wide Analysis of RNA Decay in the Cyanobacterium Synechococcus sp. Strain PCC 7002

    RNA degradation is an important process that affects the final concentration of individual mRNAs, affecting protein expression and cellular physiology. Studies of how RNA is degraded increase our knowledge of this fundamental process as well as enable the creation of genetic tools to manipulate RNA stability. By studying global transcript turnover, we searched for sequence elements that correlated with transcript (in)stability and used...

    Gina C. Gordon, Jeffrey C. Cameron, Sanjan T. P. Gupta, Michael D. Engstrom, Jennifer L. Reed, Brian F. Pfleger
    4 Aug 2020
  • Bactopia: a Flexible Pipeline for Complete Analysis of Bacterial Genomes
    Research Article | Host-Microbe Biology
    Bactopia: a Flexible Pipeline for Complete Analysis of Bacterial Genomes

    It is now relatively easy to obtain a high-quality draft genome sequence of a bacterium, but bioinformatic analysis requires organization and optimization of multiple open source software tools. We present Bactopia, a pipeline for bacterial genome analysis, as an option for processing bacterial genome data. Bactopia also automates downloading of data from multiple public sources and species-specific customization. Because the pipeline...

    Robert A. Petit, III, Timothy D. Read
    4 Aug 2020
  • The ASM Journals Committee Values the Contributions of Black Microbiologists
    Editorial
    The ASM Journals Committee Values the Contributions of Black Microbiologists
    Patrick D. Schloss, Melissa Junior, Rebecca Alvania, Cesar A. Arias, Andreas Baumler, Arturo Casadevall, Corrella Detweiler, Harold Drake, Jack Gilbert, Michael J. Imperiale, Susan Lovett, Stanley Maloy, Alexander J. McAdam, Irene L. G. Newton, Michael J. Sadowsky, Rozanne M. Sandri-Goldin, Thomas J. Silhavy, Peter Tontonoz, Jo-Anne H. Young, Craig E. Cameron, Isaac Cann, A. Oveta Fuller, Ariangela J. Kozik
    31 Jul 2020
  • A Distinct Contractile Injection System Gene Cluster Found in a Majority of Healthy Adult Human Microbiomes
    Research Article | Host-Microbe Biology
    A Distinct Contractile Injection System Gene Cluster Found in a Majority of Healthy Adult Human Microbiomes

    To engage with host cells, diverse pathogenic bacteria produce syringe-like structures called contractile injection systems (CIS). CIS are evolutionarily related to the contractile tails of bacteriophages and are specialized to puncture membranes, often delivering effectors to target cells. Although CIS are key for pathogens to cause disease, paradoxically, similar injection systems have been identified within healthy human microbiome...

    Maria I. Rojas, Giselle S. Cavalcanti, Katelyn McNair, Sean Benler, Amanda T. Alker, Ana G. Cobián-Güemes, Melissa Giluso, Kyle Levi, Forest Rohwer, Barbara A. Bailey, Sinem Beyhan, Robert A. Edwards, Nicholas J. Shikuma
    28 Jul 2020

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