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Filters: Department: "Chemistry" Collection: "ir_uspace"
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CreatorTitleDescriptionSubjectDate
326 Minteer, Shelley D.Photobioelectrochemistry: Solar energy conversion and biofuel production with photosynthetic catalystsPhotobioelectrochemical cells are devices which have been developed over the past few decades and use photosynthetic catalysts for solar energy conversion or biofuel production. In this paper, a critical review of reported photobioelectrochemical systems is presented. The systems discussed include s...2014-01-01
327 Poulter, Charles DalePredicting the functions and specificity of triterpenoid synthases: a mechanism-based multi-intermediate docking approachTerpenoid synthases construct the carbon skeletons of tens of thousands of natural products. To predict functions and specificity of triterpenoid synthases, a mechanism-based, multi-intermediate docking approach is proposed. In addition to enzyme function prediction, other potential applications of ...2014-01-01
328 Armentrout, Peter B.Thermodynamics and mechanism of protonated cysteine decomposition: a guided ion beam and computational studyA quantitative molecular description of the decomposition of protonated cysteine, H+Cys, is provided by studying the kinetic energy dependence of threshold collision-induced dissociation (CID) with Xe using a guided ion beam tandem mass spectrometer (GIBMS). Primary dissociation channels are deamida...2014-01-01
329 Poulter, Charles DaleTetartohedral twinning in IDI-2 from Thermus thermophilus: crystallization under anaerobic conditionsType-2 isopentenyl diphosphate isomerase (IDI-2) is a key flavoprotein involved in the biosynthesis of isoprenoids. Since fully reduced flavin mononucleotide (FMNH2) is needed for activity, it was decided to crystallize the enzyme under anaerobic conditions in order to understand how this reduced co...2014-01-01
330 Minteer, Shelley D.Investigating the reversible inhibition model of laccase by hydrogen peroxide for bioelectrocatalytic applicationsThe reversible inhibition of laccase by H2O2 as a bioelectrocatalyst was studied in mediated- and direct electron transfer-based configurations to understand the differences in mechanism. The reversible inhibition of laccase follows a noncompetitive inhibition model when 2,2-azino-bis(3-ethylbenzoth...2014-01-01
331 Armentrout, Peter B.Fifty years of ion and neutral thermochemistry by mass spectrometryOriginating with the appearance potentials for "positive rays", the ability of mass spectrometry to obtain quantitative information about the energetics of both ions and neutrals has evolved dramatically. About 50 years ago, many of the techniques that are now common place were first implemented, th...2014-01-01
332 Minteer, Shelley D.Characterizing efficiency of multi-Enzyme cascade-based biofuel cells by product analysisThe performance of biofuel cells with enzyme cascades have normally been characterized with open circuit potential, power density, and current density measurements. In this work, we demonstrate that with the method of quantitative product analysis by mass spectrometry, we can obtain other valuable i...2014-01-01
333 Minteer, Shelley D.Controlled placement of enzymes on carbon nanotubes using comb-branched DNAImmobilization is not only useful for preserving enzyme activity, but also to adhere an enzyme to a surface, such as an electrode, so that the enzyme does not leach into solution during testing. Current immobilization approaches do not readily allow for adjustments to the distance between the enzyme...2014-01-01
334 Morse, Michael DavidRotational analysis of the 30 1 band of the Ã6Σ+ ← X̃6Σ + system of CrCCHThe spectrum of chromium acetylide, CrCCH, has been investigated in the near-infrared region (10 500-14 500 cm−1) and an intense band system is observed. The 310 band of this system has been investigated at high resolution (0.025 cm−1) and this system is identified as the ˜A6 + ← ˜X6 + syste...2014-01-01
335 Armentrout, Peter B.Theoretical investigation and reinterpretation of the decomposition of lithiated proline and N-Methyl ProlineLithium cation complexes of proline (Pro) and N-methyl proline (NMP) have been collisionally activated with xenon in a guided ion beam tandem mass spectrometer (GIBMS). In addition to the loss of the intact ligand, Pro and NMP, we observed two prominent fragmentation pathways involving the loss of (...2014-01-01
336 Borodai, Anastasia S.C-F bond activationActivation of Carbon-Fluorine Bonds in 2', 3', 4', 5', 6'-Pentafluoroacetophenone through a Transition Metal Complex- Manganese PentacarbonylCarbon; Fluorine; Bond; Activation2014-05-30
337 Fleming Aaron M.Computational studies of electronic circular dichroism spectra predict absolute configuration assignments for the guanine oxidation product 5-carboxamido-5-formamido-2-iminohydantoinOxidation of the guanine heterocycle by two electrons can yield the chiral product 5-carboxamido-5-formamido-2-iminohydantoin (2Ih). The 2Ih free base enantiomers were synthesized from 2'-deoxyguanosine oxidized with a Cu(II)/H2O2 oxidant system followed by hydrolysis of the N-glycosidic bond. These...Guanine oxidation; 2-Iminohydantoin; Electronic circular dichroism; Time-dependent density functional theory2014-12-15
338 Borodai, Anastasia S.The effects of various metal ions on the folding of G-quadruplexesDivalent metal cations inhibit the folding of G-QuadruplexesG-Quadruplex; Divalent cations; Metal ions; Nucleic acids; Guanine; Tetrads2015-03-31
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