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  • Peptides
  • The gas-phase HDX of model peptides corresponded to labeling of primarily fast exchanging sites due to the short labeling times (ranging from 0.1 to 10 ms). In addition to peptides, gas-phase HDX of ubiquitin, cytochrome c, lysozyme and apomyoglobin were examined. (pubmedcentralcanada.ca)
  • ratio
  • The deuterium/protium ratio of the comet 67P/Churyumov-Gerasimenko, as measured by the Rosetta space probe, is about three times that of earth water. (wikipedia.org)
  • mass measurements
  • We request funds to purchase an integrated system for liquid chromatography coupled with electrospray ionization mass spectrometry (LC-ESI-MS). The system includes a Applied Biosystems (ABI) QStar Elite quadrupole time-of-flight (QqTOF) mass spectrometer capable of rapid scanning and high accuracy mass measurements, and a Waters ultra-high pressure liquid chromatography system for high resolution analyte separations. (grantome.com)
  • Accurate mass measurements are available in the reflecton mode with ± 3 ppm accuracy. (arizona.edu)
  • particles
  • The deuterium isotope's name is formed from the Greek deuteros meaning "second", to denote the two particles composing the nucleus. (wikipedia.org)
  • This idea led Chen to develop plans for the Sudbury Neutrino Observatory that would eventually make fundamental measurements demonstrating that neutrinos were particles with mass. (wikipedia.org)
  • Amino Acids
  • Site-directed mutagenesis: Using this approach, systematic mutations of amino acids are introduced into a protein sequence followed by measurement of antibody binding in order to identify amino acids that comprise an epitope. (wikipedia.org)
  • mesons
  • By this new model, the nuclear force, resulting from the exchange of mesons between neighboring nucleons, is a residual effect of the strong force. (wikipedia.org)
  • kinetics
  • Most striking were the three mutant apoproteins, D101N, E100K, and N139K, which have apparently normal metallation properties, and differ little from the WT apoprotein in either thermal stability or H/D exchange kinetics. (nih.gov)
  • Global H/D exchange kinetics of WT and A4V apo-SOD1 S-S under native and nonnative conditions. (nih.gov)
  • A ) H/D exchange kinetics for A4V and WT apo-SOD1 S-S under native conditions (10.0°C, pD 7.4, 2.5 mg/ml). (nih.gov)
  • ions
  • In addition, the doubly-substituted isotopologues are often subject to isobaric interferences, as in the methane system where 13CH5+ and 12CH3D+ ions interfere with measurement of the 12CH2D2+ and 13CH3D+ species at mass 18. (wikipedia.org)
  • high
  • Fresh distilled VSMOW water is also used for making high accuracy measurement of water's physical properties and for defining laboratory standards since it is considered to be representative of average ocean water, in effect representing all water on Earth. (wikipedia.org)
  • Very pure, carefully distilled VSMOW water is important in the manufacture of high-accuracy temperature measurement reference standards. (wikipedia.org)
  • Accurate
  • Here we describe the use of binomial distribution fitting with asymmetric linear squares regression for calculating the accurate deuterium content for mass envelopes of low signal or that contain significant overlap. (springer.com)
  • laboratory
  • Measurement of the elastic scattering was therefore a means to determine properties of the bosons, first detected at the particle physics laboratory CERN in 1983. (wikipedia.org)