Sökning: "electron microscopy EM"

Visar resultat 1 - 5 av 43 avhandlingar innehållade orden electron microscopy EM.

  1. 1. Light’EM up! : structural characterization of light-driven membrane protein complexes by cryogenic electron microscopy

    Författare :André Tomás Graça; Wolfgang P. Schröder; Johannes Messinger; Karina Persson; Werner Kühlbrandt; Umeå universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; 3D reconstruction; Arabidopsis thaliana; assembly; chlorophyll; cryo-EM; cyanobacteria; Deinococus radiodurans; electron; land plants; membrane protein complexes; Photosystem II; proton; single-particle analysis; S-Layer Deinoxanthin Binding Complex SDBC ; water.; Biochemistry; biokemi; biologisk kemi; biological chemistry;

    Sammanfattning : Photosynthesis is probably the most important process for allowing life to develop into the diverse forms we see today. In this process, solar radiation is used to convert CO2 into biomass. From this process, we obtain oxygen to breathe, sources of food (plant biomass), and the potential for clean and sustainable energy. LÄS MER

  3. 2. Fast and reliable alignment and classification of biological macromolecules in electron microscopy images

    Författare :Björn Forsberg; Erik Lindahl; Sriram Subramaniam; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; cryo-EM; electron microscopy; GPU; parallel processing; protein structure; Biochemistry towards Bioinformatics; biokemi med inriktning mot bioinformatik;

    Sammanfattning : In the last century, immense progress has been made to charter and understand a wide range of biological phenomena. The origin of genetic inheritance was determined, showing that DNA holds genes that determine the architecture of proteins, utilized by the cell for most functions. LÄS MER

  4. 3. Protein structure dynamics and interplay : by single-particle electron microscopy

    Författare :Hans Elmlund; Hans Hebert; José Maria Carazo; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; biophysics; biochemistry; molecular; Biophysical chemistry; Biofysikalisk kemi;

    Sammanfattning : Single-particle cryo-electron microscopy (cryo-EM) is a method capable of obtaining information about the structural organization and dynamics of large macromolecular assemblies. In the late nineties, the method was suggested to have the potential of generating “atomic resolution” reconstructions of particles above a certain mass. LÄS MER

  5. 4. The fracture mechanisms in duplex stainless steels at sub-zero temperatures

    Författare :Johan Pilhagen; Pavel Korzhavy; Rolf Sandström; Kim Wallin; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Duplex stainless steel; Weldments; Delamination; Fracture toughness; Impact toughness; Cleavage fracture; Nickel;

    Sammanfattning : The aim of the thesis was to study the susceptibility for brittle failures and the fracture process of duplex stainless steels at sub-zero temperatures (°C). In the first part of the thesis plates of hot-rolled duplex stainless steel with various thicknesses were used to study the influence of delamination (also known as splits) on the fracture toughness. LÄS MER

  7. 5. Structure studies of membrane associated proteins by transmission electron microscopy

    Författare :Zuoneng Wang; Carsten Mim; Anna Sundborger Lunna; KTH; []
    Nyckelord :peripheral membrane protein PMP ; BAR protein; membrane curvature; actin dynamic; transmission electron microscopy; liposomes; Technology and Health; Teknik och hälsa;

    Sammanfattning : Cell membranes need to change their shapes during many cellular processeslike protein trafficking, cytokinesis and membrane homeostasis. The lattershuttles lipids, synthesized in the endoplasmic reticulum, to all membranouscompartments. LÄS MER