Results 71 to 80 of about 83,751 (309)

Systems Biology and Pangenome of Salmonella O-Antigens. [PDF]

open access: yes, 2019
O-antigens are glycopolymers in lipopolysaccharides expressed on the cell surface of Gram-negative bacteria. Variability in the O-antigen structure constitutes the basis for the establishment of the serotyping schema. We pursued a two-pronged approach to
Kavvas, Erol   +4 more
core   +2 more sources

Radium Speciation in Simulated Digestive Biofluids: Insights from Electrospray Ionization Mass Spectrometry and Thermodynamic Modeling

open access: yesAnalysis &Sensing, EarlyView.
Electrospray ionization mass spectrometry (ESI‐MS) combined with thermodynamic modeling provides the first direct characterization of radium speciation in synthetic gastrointestinal biofluids. Free Ra2+ ions predominate with minimal protein binding and negligible EDTA complexation. Crown ethers enable effective Ra complexation.
Linus Holtmann   +5 more
wiley   +1 more source

Synthesis and in vitro cytotoxicity of acetylated 3-fluoro, 4-fluoro and 3,4-difluoro analogs of D-glucosamine and D-galactosamine

open access: yesBeilstein Journal of Organic Chemistry, 2016
Background: Derivatives of D-glucosamine and D-galactosamine represent an important family of the cell surface glycan components and their fluorinated analogs found use as metabolic inhibitors of complex glycan biosynthesis, or as probes for the study of
Štěpán Horník   +8 more
doaj   +1 more source

Effects of Oral Glucosamine Hydrochloride Administration on Plasma Free Amino Acid Concentrations in Dogs

open access: yesMarine Drugs, 2011
We examined the effects of oral glucosamine hydrochloride (GlcN), N-acetyl-D-glucosamine (GlcNAc) and D-glucose (Glc) administration on plasma total free amino acid (PFAA) concentrations in dogs. The PFAA concentrations increased in the control group and
Saburo Minami   +6 more
doaj   +1 more source

The Pleiotropic Effects of Beneficial Mutations of Adapted Escherichia coli Populations [PDF]

open access: yes, 2014
Mutations that improve fitness in one environment can often be beneficial, deleterious, or neutral in alternative environments. When a single mutation effects fitness in multiple environments, it is said to be a pleiotropic, which can have important ...
Van Dam, Brian Scott
core   +1 more source

Thermal Stabilization of Chitosan Yarn for Carbon Fiber Production

open access: yesJournal of Applied Polymer Science, EarlyView.
This study explores chitosan, a biopolymer derived from chitin, as a renewable precursor for carbon fiber production. The authors demonstrate that chitosan fibers can be successfully stabilized under controlled thermal conditions in air and nitrogen.
Irina Kuznik   +4 more
wiley   +1 more source

Applications and interest of chitin, chitosan and their derivatives in enology

open access: yesOENO One, 2005
This review treats of the possible use interest of chitin, chitosan and derivatives in enology. Chitosan and chitin are polysaccharide polymers containing more than 5 000 glucosamine and acetylglucosamine units, respectively, and their molecular weights ...
Aurélie Bornet, Pierre-Louis Teissedre
doaj   +1 more source

Immobilized photosensitizers for antimicrobial applications [PDF]

open access: yes, 2015
Photodynamic antimicrobial chemotherapy (PACT) is a very promising alternative to conventional antibiotics for the efficient inactivation of pathogenic microorganisms; this is due to the fact that it is virtually impossible for resistant strains to ...
Boyle, Ross W.   +2 more
core   +1 more source

Exploring the Roles of Tuna‐Associated Acinetobacter sp. YFT067: Implications for Host Health and Metabolism

open access: yesAnimal Research and One Health, EarlyView.
This study firstly isolated a tuna‐derived gut probiotic Acinetobacter seifertii YFT067. Dietary administration of YFT067 played significant roles in promoting growth performance, SCFAs production, lipid absorption, and metabolism of the host, indicating YFT067 as a promising probiotic candidate for enhancing tuna aquaculture productivity through ...
Ying Zou   +4 more
wiley   +1 more source

Drosophila GFAT1 and GFAT2 enzymes encode obligate developmental functions

open access: yesFly, 2020
Glutamine: fructose-6-phosphate amidotransferase (GFAT) enzymes catalyse the first committed step of the hexosamine biosynthesis pathway (HBP) using glutamine and fructose-6-phosphate to form glucosamine-6-phosphate (GlcN6P). Numerous species (e.g. mouse,
Po Chen, Sarah Visokay, John M. Abrams
doaj   +1 more source

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