Search for dissertations about: "time resolved crystallography"

Showing result 1 - 5 of 11 swedish dissertations containing the words time resolved crystallography.

  1. 1. From Time-Averaged to Time-Resolved Crystallography: Studies on Superoxide Dismutase and Myoglobin

    University dissertation from Thomas Ursby, Molecular Biophysics, Chemical Center, Lund University

    Author : Thomas Ursby; Lunds universitet.; Lund University.; [1998]
    Keywords : Bayesian statistics; superoxide dismutase; electron difference maps; synchrotron; docking site; photolysis; myoglobin; Time-resolved crystallography; Laue; thermostability; Sulfolobus solfataricus; Molecular biophysics; Molekylär biofysik; Biologi; Biology;

    Abstract : We have studied protein motions with nanosecond time-resolved crystallography. The release of carbon monoxide from its complex with myoglobin (MbCO) was triggered by nanosecond laser pulses. X-ray data were collected with time delays ranging from 4 ns to 1.9 ms using the Laue method, at the European Synchrotron Radiation Facility in Grenoble. READ MORE

  2. 2. Generation and Applications of Short-Pulse X-ray Radiation

    University dissertation from Atomic Physics, Lund Institute of Technology

    Author : Michael Harbst; Lunds universitet.; Lund University.; [2005]
    Keywords : Kondenserade materiens egenskaper:struktur; egenskaper termiska och mekaniska ; crystallography; phase equilibria; Material science; Condensed matter:stucture; thermal and mechanical properties; time-resolved; X-ray diffraction; kristallografi; fasjämvikt; Material technology; Materiallära; materialteknik; Fysik; Physics; TEKNIKVETENSKAP; TECHNOLOGY;

    Abstract : This thesis summarizes work using hard X-ray radiation on nanosecond and picosecond timescales. The focus is on the experimental part including detailed descriptions of setups for laser pumped - X-ray probe experiments. X-ray diffraction is sensitive to structural properties on the length scale of chemical bonds. READ MORE

  3. 3. Crystallography in Four Dimensions : Methods and Applications

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Gunilla Carlsson; Uppsala universitet.; [2004]
    Keywords : Natural Sciences Biological Sciences Biophysics; Naturvetenskap Biologiska vetenskaper Biofysik; Molecular biophysics; horseradish peroxidase; redox reactions; X-ray crystallography; haem catalysis; molecular movies; radiation damage; Molekylär biofysik; NATURAL SCIENCES Chemistry Molecular biophysics; NATURVETENSKAP Kemi Molekylär biofysik;

    Abstract : The four-electron reduction of dioxygen to water is the most exothermic non-photochemical reaction available to biology. A detailed molecular description of this reaction is needed to understand oxygen-based redox processes. Horseradish peroxidase (HRP) is a haem-containing redox enzyme capable of catalysing the reduction of dioxygen to water. READ MORE

  4. 4. Time-Resolved and High-Energy Synchrotron Radiation Crystallography using X-ray Area Detectors: Calibration and Applications

    University dissertation from Chalmers University of Technology

    Author : Olof Svensson; Chalmers tekniska högskola.; Chalmers University of Technology.; [1996]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Fysik; Physics;

    Abstract : This thesis relates to characterisation and calibration techniques for X-ray area detectors with applications in time-resolved and high-energy X-ray crystallography. X-ray crystallography is an interdisciplinary science with important applications in many fields, e.g. chemistry, physics, biology, geology and materials science. READ MORE

  5. 5. Structural and physicochemical studies on metal and porphyrin binding by the Bacillus subtilis ferrochelatase

    University dissertation from Chalmers University of Technology

    Author : Mattias Hansson; Lunds universitet.; Lund University.; [2009]
    Keywords : metal binding; metal specificity; porphyrin metallation; time resolved crystallography; fluorescence quenching; X-ray structure; inclusion bodies; Bacillus subtilis; heme biosynthesis; ferrochelatase; hemH; Kemi; Chemistry;

    Abstract : The enzyme ferrochelatase (EC 4.99.1.1) is the terminal enzyme in the biosynthetic pathway of heme b and catalyzes the insertion of Fe(II) into protoporphyrin IX. READ MORE