Results 31 to 40 of about 218,797 (343)

The stochastic quasi-steady-state assumption: Reducing the model but not the noise [PDF]

open access: yes, 2011
Highly reactive species at small copy numbers play an important role in many biological reaction networks. We have described previously how these species can be removed from reaction networks using stochastic quasi-steady-state singular perturbation ...
Haseltine, Eric L.   +3 more
core   +2 more sources

An NMR Study on the clpC Operon Binding Region of Transcription Factor CtsR from Bacillus subtilis

open access: yesChinese Journal of Magnetic Resonance, 2021
When Gram-positive bacterium Bacillus subtilis responds to heat-shock, protein arginine kinase McsB phosphorylates Arg62 (R) in the clpC operon binding region of transcription factor CtsR, leading to dissociation of CtsR and clpC operon and initiation of
CHEN Xiao-wen   +3 more
doaj   +1 more source

Network Topology as a Driver of Bistability in the lac Operon

open access: yes, 2008
The lac operon in Escherichia coli has been studied extensively and is one of the earliest gene systems found to undergo both positive and negative control. The lac operon is known to exhibit bistability, in the sense that the operon is either induced or
Alan Veliz-Cuba   +3 more
core   +1 more source

Roles of transcriptional and translational control mechanisms in regulation of ribosomal protein synthesis in Escherichia coli [PDF]

open access: yes, 2017
Bacterial ribosome biogenesis is tightly regulated to match nutritional conditions and to prevent formation of defective ribosomal particles. InEscherichia coli, most ribosomal protein (r-protein) synthesis is coordinated with rRNA synthesis by a ...
Burgos, Hector L   +3 more
core   +3 more sources

Unraveling a Tangled Skein: Evolutionary Analysis of the Bacterial Gibberellin Biosynthetic Operon

open access: yesmSphere, 2020
Gibberellin (GA) phytohormones are ubiquitous regulators of growth and developmental processes in vascular plants. The convergent evolution of GA production by plant-associated bacteria, including both symbiotic nitrogen-fixing rhizobia and ...
Ryan S. Nett   +6 more
doaj   +1 more source

Magnetosome Gene Duplication as an Important Driver in the Evolution of Magnetotaxis in the Alphaproteobacteria [PDF]

open access: yes, 2019
The evolution of microbial magnetoreception (or magnetotaxis) is of great interest in the fields of microbiology, evolutionary biology, biophysics, geomicrobiology, and geochemistry.
Bazylinski, Dennis A.   +9 more
core   +4 more sources

Periodontal microbiology and microbial etiology of periodontal diseases: Historical concepts and contemporary perspectives

open access: yesPeriodontology 2000, EarlyView., 2023
Abstract This narrative review summarizes the collective knowledge on periodontal microbiology, through a historical timeline that highlights the European contribution in the global field. The etiological concepts on periodontal disease culminate to the ecological plaque hypothesis and its dysbiosis‐centered interpretation.
Georgios N. Belibasakis   +5 more
wiley   +1 more source

The Rhizobium etli trpB Gene Is Essential for an Effective Symbiotic Interaction with Phaseolus vulgaris

open access: yesMolecular Plant-Microbe Interactions, 1999
A mutant strain (CTNUX4) of Rhizobium etli carrying Tn5 unable to grow with ammonium as the sole nitrogen source was isolated and characterized. Sequence analysis showed that Tn5 is inserted into a trpB (tryptophan synthase)-homologous gene.
Rosarita Taté   +5 more
doaj   +1 more source

Lipoproteins of Mycobacterium tuberculosis : an abundant and functionally diverse class of cell envelope components [PDF]

open access: yes, 2004
Mycobacterium tuberculosis remains the predominant bacterial scourge of mankind. Understanding of its biology and pathogenicity has been greatly advanced by the determination of whole genome sequences for this organism.
Harrington, Dean, Sutcliffe, Iain
core   +1 more source

Biocatalytic Regioselective C‐Formylation of Resorcinol Derivatives

open access: yesAngewandte Chemie, EarlyView.
An acyltransferase from Chromobacterium sphagni (CsATase) was identified that catalyzes the regioselective formylation of resorcinol substrates. The formylation of substituted resorcinol derivatives yielded mono‐formylated products with up to 99% conversion and up to 74% isolated yield.
Lilla Gal   +6 more
wiley   +2 more sources

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