Sökning: "Time-resolved X-ray solution scattering"

Visar resultat 11 - 15 av 16 avhandlingar innehållade orden Time-resolved X-ray solution scattering.

  1. 11. Visualizing structural dynamics: from small molecules to membrane proteins

    Författare :Magnus Andersson; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; membrane protein; bacteriorhodopsin; proteorhodopsin; halorhodopsin; structural dynamics; time-resolved X-ray scattering;

    Sammanfattning : To fully understand the mechanism of a chemical reaction, it is important to characterize the rapid structural dynamics of transient chemical species as the reaction propagates. Since chemical processes are heavily influenced by the solvent in which they occur, the interaction with the surrounding solution also needs to be elucidated. LÄS MER

  3. 12. Determining the effects of regulatory parameters on the structural dynamics of P-type ATPase membrane transporters

    Författare :Fredrik Orädd; Magnus Andersson; Magnus Wolf-Watz; Marco Cammarata; Umeå universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; protein dynamics; regulation; time-resolved x-ray solution scattering; MD simulation; membrane protein; P-type ATPase; SERCA; CopA; HMA4; adenylate kinase; Physical Chemistry; fysikalisk kemi;

    Sammanfattning : Proteins are macromolecular machines with roles in all cellular activities and structures. The functional properties of each protein is the result of its combination of 3D-structure and inherent dynamics, and a wealth of structural and dynamic mechanisms have evolved to regulate protein activity. LÄS MER

  4. 13. Ultrafast Structural Changes in a Bacterial Photosynthetic Reaction Center probed with XFEL Radiation

    Författare :Robert Dods; Göteborgs universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Photosynthesis; Reaction Center; Time-resolved crystallography; XFEL; membrane protein;

    Sammanfattning : Photosynthesis is the process by which plants and many species of bacteria convert energy from sunlight into chemical energy used to power their metabolism. As these plants and bacteria are eaten, the chemical energy moves up the food chain and thus photosynthesis provides fuel for almost all life on Earth. LÄS MER

  5. 14. Characterization of membrane protein active transport under native-like conditions

    Författare :Harsha Ravishankar; Magnus Andersson; Pål Stenmark; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Biological Physics; Biologisk fysik;

    Sammanfattning : P-type ATPase proteins are a family of membrane proteins that maintain concentration gradients of e.g. ions by ATP-driven transport across the membrane. While these transporters share many features in their molecular architecture, structural differences are required to convey ion specificity. LÄS MER

  7. 15. Mesoporous Silica Formed with Triblock Copolymers

    Författare :Katarina Flodström; Fysikalisk kemi; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Fysikalisk kemi; 1H NMR; TEM; SAXS; in situ; mechanism of formation; cubic Ia3d; cubic Im3m; Mesoporous; synthesis; Pluronic; SBA-16; SBA-15; hexagonal p6mm; synchrotron SAXS; Physical chemistry; amphiphilic polymers; silica;

    Sammanfattning : The formation of highly ordered mesoporous silica materials, using PEO-PPO-PEO amphiphilic triblock copolymers (so-called Pluronics) as structure directing agents, has been studied. The materials are formed through the addition of a silica source to a polymer solution of low concentration (2.5 wt ) under acidic conditions. LÄS MER