7 hasil untuk "Roman Stocker"
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Artikel Jurnal Teks lengkap
Mechanistic model of nutrient uptake explains dichotomy between marine oligotrophic and copiotrophic bacteria
Marine bacterial diversity is immense and believed to be driven in part by trade-offs in metabolic strategies. Here we consider heterotrophs that rely on organic carbon as an energy source and present a molecular-level model of cell metabolism that explains the dichotomy between copiotrophs—which…
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Artikel Jurnal Teks lengkap
Systematic Spatial Bias in DNA Microarray Hybridization Is Caused by Probe Spot Position-Dependent Variability in Lateral Diffusion
Background: The hybridization of nucleic acid targets with surface-immobilized probes is a widely used assay for the parallel detection of multiple targets in medical and biological research. Despite its widespread application, DNA microarray technology still suffers from several biases and lack of…
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Artikel Jurnal Teks lengkap
The Extracellular Matrix Component Psl Provides Fast-Acting Antibiotic Defense in Pseudomonas aeruginosa Biofilms
Bacteria within biofilms secrete and surround themselves with an extracellular matrix, which serves as a first line of defense against antibiotic attack. Polysaccharides constitute major elements of the biofilm matrix and are implied in surface adhesion and biofilm organization, but their…
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Artikel Jurnal Teks lengkap
The Ciliate Paramecium Shows Higher Motility in Non-Uniform Chemical Landscapes
We study the motility behavior of the unicellular protozoan Paramecium tetraurelia in a microfluidic device that can be prepared with a landscape of attracting or repelling chemicals. We investigate the spatial distribution of the positions of the individuals at different time points with methods…
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Artikel Jurnal Teks lengkap
Degradation of extracellular polymeric substances shapes microbial community diversity
Metabolic cross-feeding networks are central to shaping microbial community dynamics in environments ranging from the rhizosphere, gut, and marine carbon cycling. Yet cross-feeding has predominantly been viewed by examining exchanged small metabolites. In contrast, the role of extracellular…
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Artikel Jurnal Teks lengkap
RecA Protein Plays a Role in the Chemotactic Response and Chemoreceptor Clustering of Salmonella enterica
The RecA protein is the main bacterial recombinase and the activator of the SOS system. In Escherichia coli and Salmonella enterica sv. Typhimurium, RecA is also essential for swarming, a flagellar-driven surface translocation mechanism widespread among bacteria. In this work, the direct…
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Artikel Jurnal Teks lengkap
Emergent spatial structure in the gut microbiota is driven by bacterial growth and gut contractions
Spatial structure can functionally determine ecological interactions and evolution of microbial communities. The gut microbiota is known to be spatially structured longitudinally along the gastrointestinal tract, but micro-scale structure in the gut lumen has not been extensively explored. Here, we…