Sökning: "single crystal X-ray crystallography"

Visar resultat 1 - 5 av 35 avhandlingar innehållade orden single crystal X-ray crystallography.

1. 1. Simulations of ultrafast photon-matter interactions for molecular imaging with X-ray lasers

   Författare :Ibrahim Eliah Dawod; Nicusor Timneanu; Carl Caleman; Adrian P. Mancuso; Lars Schäfer; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; X-ray free-electron laser; molecular dynamics; radiation damage; plasma simulations; density functional theory¸ coherent diffractive imaging; protein structure; X-ray crystallography; single particle imaging;

   Sammanfattning : Biological structure determination has had new avenues of investigation opened due to the introduction of X-ray free-electron lasers (XFELs). These X-ray lasers provide an extreme amount of photons on ultrafast timescales used to probe matter, and in particular biomolecules. LÄS MER

3. 2. Solving Mysteries and Outwitting Transitions : Investigating the Incommensurate Crystal Structures of AuIn and Sn3Sb2

   Författare :Laura Folkers; Centrum för analys och syntes; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Crystallography; Modulation; Intermetallics; X-Ray Diffraction; Single crystal;

   Sammanfattning : This thesis introduces two new incommensurate alloys. AuIn shows variable amounts of modulation, depending on the measurement temperature. At 400°C the diffraction pattern shows diffuse scattering and a thallium iodide type Cmcm space group. LÄS MER

4. 3. Advances in Biomolecular Imaging with X-ray Free-Electron Lasers

   Författare :Christofer Östlin; Carl Caleman; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; XFEL; serial femtosecond x-ray crystallography; single particle imaging; radiation damage; GROMACS; Cretin; computer simulation;

   Sammanfattning : Utilizing X-rays to solve molecular structures has proven to be an immensely powerful and im- portant scientific technique. The invention of X-ray crystallography has allowed for countless breakthroughs in chemistry, biology and material science and remains the number one method used for structural determination today. LÄS MER

5. 4. Crystallography in Four Dimensions : Methods and Applications

   Författare :Gunilla Carlsson; Janos Hajdu; Dieter Oesterhelt; Vilmos Fülöp; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Molecular biophysics; horseradish peroxidase; redox reactions; X-ray crystallography; haem catalysis; molecular movies; radiation damage; Molekylär biofysik; Molecular biophysics; Molekylär biofysik;

   Sammanfattning : 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. LÄS MER

7. 5. Glypican-1: Structural and functional analysis of the N-glycosylated human protein

   Författare :Wael Awad Abdelhady; Biokemi och Strukturbiologi; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Proteoglycans; glypicans; glypican-1; heparan sulphate; N-glycosylation; exostosin-proteins; X-ray crystallography; crystal dehydration; diffraction anisotropy; Small angle X-ray scattering SAXS9; protein spectroscopy;

   Sammanfattning : Glypicans are multifunctional cell surface heparan sulphate proteoglycans co-regulating numerous signalling pathways, and are thereby involved in the control of cellular division, differentiation, and morphogenesis. The heparan sulphate (HS) chains are responsible for many of those biological functions; nevertheless recent studies suggest functional roles for the glypican core proteins in mediating the signalling of various growth factors. LÄS MER