Sökning: "Lipidic Cubic Phase"

Visar resultat 6 - 10 av 11 avhandlingar innehållade orden Lipidic Cubic Phase.

  1. 6. Structural Insights at Sub-Ångstrom, Medium and Low Resolution: Crystallization of Trypsin, Bacterioferritin, Photosynthetic Reaction Center, and Photosynthetic Core Complex

    Författare :Weixiao Yuan Wahlgren; Göteborgs universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; protein crystallization; cubic phase; sponge phase; bicelle; trypsin; bacterioferritin; reaction center; core complex; photosynthesis;

    Sammanfattning : The catalytic action of serine proteases depends on the interplay of a nucleophile, a general base and a general acid. The catalytic triad is composed of serine, histidine and aspartate residues. The serine acts as a nucleophile while the histidine plays a dual role as the general base or acid at different steps of the reaction. LÄS MER

  3. 7. Lipidic-sponge phase crystallisation and time-resolved Laue diffraction studies of bacterial photosynthetic reaction centres

    Författare :Annemarie Wöhri; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; lipidic-sponge phase crystallization reaction centre from Rhodobacter sphaeroides and Blastochloris viridis photosynthesis evolution time-resolved Laue diffraction;

    Sammanfattning : Photosynthesis is the procedure of light capture and converting it into a chemical energy source for the cell. The work-horse of this process are photosynthetic reaction centres, which capture photons with the help of their antenna complexes and use these photons to drive charge separation reactions, and ultimately chemiosmotic coupling. LÄS MER

  4. 8. Intermediate State Stabilisation in Enzyme Catalysis Structural studies of two serine proteases and a photosynthetic reaction centre

    Författare :Gergely Katona; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; photosynthetic reaction centre; X-ray crystallography; structural mechanism; enzyme kinetics; serine protease; enzyme intermediate; enzyme catalysis;

    Sammanfattning : Enzymes play a key role in every organisms life. They catalyse chemical reactions and may also respond to external stimulus. The reoccurring theme of this thesis is how biologically relevant information can be gleaned from X-ray structures of the enzymes. LÄS MER

  5. 9. Production and Structural Dynamics of Microbial Rhodopsins

    Författare :Cecilia Wickstrand; Göteborgs universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; bacteriorhodopsin; channelrhodopsin; time-resolved serial femtosecond crystallography;

    Sammanfattning : Rhodopsins are a family of membrane proteins that are found in a wide range of organisms and provide them with the ability to sense and react to light. When light is absorbed by these proteins, structural changes occur that initiate the pumping of protons, opening of a channel or signal transfer. LÄS MER

  7. 10. Micro-Crystallization and Time-Resolved Diffraction Studies of a Bacterial Photosynthetic Reaction Center

    Författare :Petra Båth; Göteborgs universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : Photosynthesis is one of the most important set of chemical reactions in nature as they can convert sunlight into hydrocarbons and chemical energy. The proteins responsible for this are two general types of reaction centers that can be found in a wide variety of living organisms capable of photosynthesis, from bacteria to algae and plants. LÄS MER