Browsing Chemistry and Biochemistry by Title
Now showing items 372-391 of 670
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Microcapsules through polymer complexation. I: Complex coacervation of polymers containing a high charge density
(Elsevier, 1991-05-01)Acidic and basic methacrylate co- and ter-polymers based on (respectively) methacrylic acid (MAA) and dimethylaminoethyl methacrylate (DMAEMA) were prepared by solution free radical polymerization and structurally characterized ... -
Microcapsules through polymer complexation. II. By complex coacervation of polymers containing a low charge density
(Elsevier, 1991-07-01)Relationships between ionizable group content, structure and molecular weight, solubility and solution behaviour, and the efficacy of ionic complex formation through complex coacervation, have been established for a range ... -
Microcapsules through polymer complexation. Part 3: encapsulation and culture of human Burkitt lymphoma cells in vitro
(Elsevier, 1995-03-01)Methacrylic acid (MAA) based polyelectrolytes were complexed with protonated or quaternized dimethylaminoethyl methacrylate (DMAEMA) containing polyelectrolytes to form microcapsules in vitro. Anchorage independent human ... -
A microprocessor-controlled photon counter for pulsed optically detected magnetic resonance
(American Institute of Physics, 1979-08-01)In pulsed optically detected magnetic resonance (ODMR) spectroscopy, a lock-in amplifier is used to monitor the signal which is phase-matched to the duty cycle of an applied sequence of pulses. However, since the desired ... -
Microsomal P450-catalyzed N-dealkylation of N,N-dialkylanilines: evidence for a C(alpha)-H abstraction mechanism
(American Chemical Society, 2002-03-06)The early proposal that P450-catalyzed N-dealkylation of N,N-dialkylamines proceeds through a single-electron-transfer (SET) mechanism was later challenged in favor of the C(alpha)-H abstraction mechanism. In the present ... -
Middle-down proteomic analyses with Ion mobility separations of endogenous isomeric proteoforms
(NLM (Medline), 2020-01-14)Biological functions of many proteins are governed by post-translational modifications (PTMs). In particular, the rich PTM complement in histones controls the gene expression and chromatin structure with major health ... -
Mimicking the primary events of photosynthesis
(Wichita State University, 2005-04-22) -
Mode of substrate interaction and energetics of carbon-oxygen bond formation of the dopamine beta-monooxygenase reaction
(American Chemical Society, 1999-11-09)Previous studies have shown that the dopamine beta-monooxygenase (DbetaM; E.C. 1.14.17.1)/1-(2-aminoethyl)-1,4-cyclohexadiene (CHDEA) reaction partitions between side chain and ring H-abstraction to produce the ... -
Model complexes for nickel containing enzymes: Carbon monoxide dehydrogenase/ acetyl coenzyme a synthase and nickel superoxide dismutase
(Wichita State University, 2009-12)Carbon Monoxide Dehydrogenase / Acetyl CoA Synthase (CODH/ACS) is a bifunctional enzyme that catalyzes the reduction of CO₂ to CO and the assembly of Acetyl CoA. The A-cluster active site, which catalyzes the Acetyl CoA ... -
Model complexes for the A-cluster of CODH/ACS
(Wichita State University. Graduate School., 2006-04-28) -
Modeling the active sites of metalloenzymes with thiolate coordination
(Wichita State University, 2007-12)Nitrile Hydratase (NHase) is a bacterial enzyme which catalyzes the hydrolysis of organic nitriles to their corresponding amides. The active site of NHase contains Fe (III) or Co(III) ions in an unusual coordination sphere ... -
Molecular dynamics simulation of horse-heart cytochrome c in water-methanol solvent systems
(Wichita State University, 2014-05)Molecular Dynamics simulations have been carried out to investigate the dynamics of horse heart Cytochrome C and associated crystallographic water molecules in different water-methanol systems. The 100 ns simulation predicts ... -
Molecular modeling of cetylpyridinium bromide, a cationic surfactant, in solutions and micelle
(American Chemical Society, 2015-11-10)Cationic surfactants are widely used in biological and industrial processes. Notably, surfactants with pyridinium salts, such as cetylpyridinium bromide (CPB), have diverse applications. The cetylpyridium cation has a ... -
Molecular structure characterization by isotopic splitting in nonlinear ion mobility spectra
(American Chemical Society, 2018-01-02)Nearly all compounds comprise numerous isotopologues ensuing from stable natural isotopes for constituent elements. The consequent isotopic envelopes in mass spectra can reveal the ion stoichiometry but not geometry. We ... -
Molecular tetrads comprised of Zinc porphyrin-boron dipyrrin-triphenylamine triad to probe sequential energy/electron transfer events via axial ligation with C₆₀imidazole entity
(Wichita State University. Graduate School, 2010-04-23)There is a growing interest to mimic major processes in natural photosynthesis via artificial systems in order to harvest solar energy. In the present study, we wish to report newly synthesized molecular triads comprised ... -
Molecular triads composed of ferrocene, C60, and nitroaromatic entities: electrochemical, computational, and photochemical investigations
(John Wiley and Sons, 2002-12-27)Synthesis and physicochemical characterization of a series of molecular triads composed of ferrocene, C(60), and nitroaromatic entities are reported. Electrochemical studies revealed multiple redox processes involving all ... -
Molecular triads comprised of boron dipyrrin-C60 Dyad connected to either an energy or electron donating entity to probe sequential energy/electron transfer events.
(Wichita State University. Graduate School, 2009-05-01)In natural photosynthesis two major processes, absorption of light energy by antenna system and transportation of that light energy to the reaction center take place efficiently. There is a growing interest to mimic these ... -
Monitoring anthrax toxin receptor dissociation from the protective antigen by NMR
(John Wiley and Sons, 2009-01-01)The binding of the Bacillus anthracis protective antigen (PA) to the host cell receptor is the first step toward the formation of the anthrax toxin, a tripartite set of proteins that include the enzymatic moieties edema ... -
Mono- and di-nuclear nickel(II) complexes with mixed N/S-donor ligands: Syntheses, structures and physical properties
(Elsevier, 2012-05-03)Two new Ni(II) complexes are reported with tridentate thiosemicarbazone ligands derived from Schiff-base condensation with phenylthiosemicarbazide. Complex 1, a novel dinuclear Ni(II) complex of a SNS ligand synthesized ... -
MPP+ is only the simplest of a large group of unidentified potent dopaminergic toxins as shown by C. Elegans Parkinson's model studies
(Wichita State University, 2019-12)Although the cause(s) of Parkinson's disease (PD) is not fully understood, it is believed that environmental factors play a major role. The discovery that the synthetic chemical, 1-methyl-4- phenyl-1,2,3,6-tetrahydropyridine ...