Results 51 to 60 of about 24,736 (213)

Deconstructing the Dissimilatory Sulfate Reduction Pathway: Isotope Fractionation of a Mutant Unable of Growth on Sulfate

open access: yesFrontiers in Microbiology, 2018
The sulfur isotope record provides key insight into the history of Earth's redox conditions. A detailed understanding of the metabolisms driving this cycle, and specifically microbial sulfate reduction (MSR), is crucial for accurate paleoenvironmental ...
Emma Bertran   +8 more
doaj   +1 more source

Metabolic fluxes for nutritional flexibility of Mycobacterium tuberculosis

open access: yesMolecular Systems Biology, 2021
The co‐catabolism of multiple host‐derived carbon substrates is required by Mycobacterium tuberculosis (Mtb) to successfully sustain a tuberculosis infection. However, the metabolic plasticity of this pathogen and the complexity of the metabolic networks
Khushboo Borah   +15 more
doaj   +1 more source

Stochastic models of the chemostat [PDF]

open access: yes, 2010
We consider the modeling of the dynamics of the chemostat at its very source. The chemostat is classically represented as a system of ordinary differential equations.
Campillo, Fabien   +2 more
core   +3 more sources

Modeling the effect of copper availability on bacterial denitrification [PDF]

open access: yes, 2013
When denitrifying bacteria such as Paracoccus denitrificans respire anaerobically they convert nitrate to dinitrogen gas via a pathway which includes the potent greenhouse gas, nitrous oxide (NO). The copper-dependent enzyme Nitrous Oxide reductase (Nos)
Blyth, M.G.   +5 more
core   +1 more source

The power of many: when genetics met yeasts and high‐throughput

open access: yesBiological Reviews, EarlyView.
ABSTRACT In recent years, complex technological capabilities have evolved, driven by the need to solve complex and integrative biological questions through global analyses. New equipment allows the scaling up and automation of processes which previously were carried out on a very limited scale.
Víctor A. Tallada, Víctor Carranco
wiley   +1 more source

Bacterial Competition in the Presence of a Virus in a Chemostat

open access: yesMathematics, 2023
We derive a mathematical model that describes the competition of two populations in a chemostat in the presence of a virus. We suppose that only one population is affected by the virus.
Amer Hassan Albargi, Miled El Hajji
doaj   +1 more source

Random Chemostats with Competition and Different Kinetics to Investigate the Growth of the Gut Microbiome

open access: yesMathematical Methods in the Applied Sciences, EarlyView.
ABSTRACT We investigate some chemostat models incorporating wall growth, competition, random fluctuations on the dilution rate, and different consumption functions (Monod and Haldane). We analyze the asymptotic behavior of the solutions of the corresponding random differential systems to establish conditions on the model parameters under which the ...
Javier López‐de‐la‐Cruz   +2 more
wiley   +1 more source

Universal protein fluctuations in populations of microorganisms

open access: yes, 2012
The copy number of any protein fluctuates among cells in a population; characterizing and understanding these fluctuations is a fundamental problem in biophysics.
Braun, Erez   +7 more
core   +1 more source

Overexploitation can counteract top‐down control and the paradox of enrichment in simple food chains

open access: yesOikos, Volume 2026, Issue 5, May 2026.
Because of its high abundance or its high feeding intensity, a consumer can overexploit its resource by consuming it on a shorter timescale than resource regeneration. While this short‐term overexploitation is widespread in nature, its general implications for biotic control patterns and ecosystem stability are not clear.
Josquin Guerber   +2 more
wiley   +1 more source

Resolving the contributions of the membrane-bound and periplasmic nitrate reductase systems to nitric oxide and nitrous oxide production in Salmonella enterica serovar Typhimurium [PDF]

open access: yes, 2011
The production of cytotoxic nitric oxide (NO) and conversion into the neuropharmacological agent and potent greenhouse gas nitrous oxide (N2O) is linked with anoxic nitrate catabolism by Salmonella enterica serovar Typhimurium.
Anderson   +50 more
core   +1 more source

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