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peptidoglycan

  • Open Access
    From Modules to Networks: a Systems-Level Analysis of the Bacitracin Stress Response in <span class="named-content genus-species" id="named-content-1">Bacillus subtilis</span>
    Research Article | Molecular Biology and Physiology
    From Modules to Networks: a Systems-Level Analysis of the Bacitracin Stress Response in Bacillus subtilis

    Antibiotic resistance poses a major threat to global health, and systematic studies to understand the underlying resistance mechanisms are urgently needed. Although significant progress has been made in deciphering the mechanistic basis of individual resistance determinants, many bacterial species rely on the induction of a whole battery of resistance modules, and the complex regulatory networks controlling these modules in response to...

    Hannah Piepenbreier, Andre Sim, Carolin M. Kobras, Jara Radeck, Thorsten Mascher, Susanne Gebhard, Georg Fritz
  • Open Access
    Regulation of AmpC-Driven β-Lactam Resistance in <span class="named-content genus-species" id="named-content-1">Pseudomonas aeruginosa</span>: Different Pathways, Different Signaling
    Research Article | Molecular Biology and Physiology
    Regulation of AmpC-Driven β-Lactam Resistance in Pseudomonas aeruginosa: Different Pathways, Different Signaling

    The extensive use of β-lactam antibiotics and the bacterial adaptive capacity have led to the apparently unstoppable increase of antimicrobial resistance, one of the current major global health challenges. In the leading nosocomial pathogen Pseudomonas aeruginosa, the mutation-driven AmpC β-lactamase hyperproduction stands out as the main resistance mechanism, but the...

    Gabriel Torrens, Sara Belén Hernández, Juan Alfonso Ayala, Bartolome Moya, Carlos Juan, Felipe Cava, Antonio Oliver
  • Open Access
    Impacts of Penicillin Binding Protein 2 Inactivation on β-Lactamase Expression and Muropeptide Profile in <em>Stenotrophomonas maltophilia</em>
    Research Article | Molecular Biology and Physiology
    Impacts of Penicillin Binding Protein 2 Inactivation on β-Lactamase Expression and Muropeptide Profile in Stenotrophomonas maltophilia

    Inducible expression of chromosomally encoded β-lactamase(s) is a key mechanism for β-lactam resistance in Enterobacter cloacae, Citrobacter freundii, Pseudomonas aeruginosa, and Stenotrophomonas maltophilia. The muropeptides produced during the peptidoglycan recycling pathway act as activator ligands for β-lactamase(s) induction. The muropeptides 1,6-anhydromuramyl pentapeptide and 1,6-anhydromuramyl...

    Yi-Wei Huang, Yu Wang, Yun Lin, Chin Lin, Yi-Tsung Lin, Cheng-Chih Hsu, Tsuey-Ching Yang
  • Open Access
    Temporal Regulation of the <span class="named-content genus-species" id="named-content-1">Bacillus subtilis</span> Acetylome and Evidence for a Role of MreB Acetylation in Cell Wall Growth
    Research Article | Molecular Biology and Physiology
    Temporal Regulation of the Bacillus subtilis Acetylome and Evidence for a Role of MreB Acetylation in Cell Wall Growth

    The past decade highlighted Nε-lysine acetylation as a prevalent posttranslational modification in bacteria. However, knowledge regarding the physiological importance and temporal regulation of acetylation has remained limited. To uncover potential regulatory roles for acetylation, we analyzed how acetylation patterns and abundances change between growth phases in...

    Valerie J. Carabetta, Todd M. Greco, Andrew W. Tanner, Ileana M. Cristea, David Dubnau
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