Sökning: "molecular machines"

Visar resultat 1 - 5 av 32 avhandlingar innehållade orden molecular machines.

  1. 1. Dynamic Organization of Molecular Machines in Bacteria

    Författare :Bhupender Singh; Santanu Dasgupta; Leif A. Kirsebom; Don G. Ennis; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; molecular machines; bacteria; cell cycle; ribosome; replisome; divisome; spore; E. coli; H. pylori; Mycobacteria; Microbiology; Mikrobiologi; Mikrobiologi; Microbiology;

    Sammanfattning : Bacterial cells were once treated as membrane-enclosed bags of cytoplasm: a homogeneous, undifferentiated suspension in which polymers (proteins, nucleic acids, etc.) and small molecules diffused freely to interact with each other. LÄS MER

  3. 2. Exploring the Molecular Dynamics of Proteins and Viruses

    Författare :Daniel Larsson; David van der Spoel; Modesto Orozco; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; molecular dynamics; virus dynamics; capsid dissolution; satellite tobacco necrosis virus; satellite tobacco mosaic virus; virus genome structure; gas phase protein structure; water layer; micelle embedded protein; membrane protein; Chemistry with specialization in Biophysics; Kemi med inriktning mot biofysik;

    Sammanfattning : Knowledge about structure and dynamics of the important biological macromolecules — proteins, nucleic acids, lipids and sugars — helps to understand their function. Atomic-resolution structures of macromolecules are routinely captured with X-ray crystallography and other techniques. LÄS MER

  4. 3. Nucleolar Ribosome Assembly

    Författare :Fredrik Lackmann; Lars Wieslander; Denis Lafontaine; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Ribosome biogenesis; RNA; Nucleolus; Molecular Biology; molekylärbiologi;

    Sammanfattning : Ribosomes are macromolecular machines that are responsible for production of every protein in a living cell. Yet we do not know the details about how these machines are formed. The ribosome consists of four RNA strands and roughly 80 proteins that associate with each other in the nucleolus and form pre-ribosomal complexes. LÄS MER

  5. 4. Dietary, Pharmacological and Environmental Effects on Brown Adipose Tissue

    Författare :Erik Lindsund; Tore Bengtsson; Jan Nedergaard; Karsten Kristiansen; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Obesity; brown adipose tissue; uncoupling protein 1; moderate cold exposure; calorimetry; thyroxine; dietary protein; thermic effect of food; diet-induced thermogenesis; adrenergic stimulation; mice; physiology; molekylär biovetenskap; Molecular Bioscience;

    Sammanfattning : Obesity is a common health issue; over 12 % of the adult world population have obesity. Obesity has many co-morbidities including cardo-vascular diseases and diabetes. Obesity is the result of chronic positive energy balance, eating too much and expending too little. LÄS MER

  7. 5. Modeling of voltage-gated ion channels

    Författare :Pär Bjelkmar; Erik Lindahl; Toby W. Allen; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Molecular modeling; Molecular dynamics; Voltage-gating; Ion channels; Protein structure prediction; Chemistry; Kemi; biokemi; inriktning teoretisk kemi; Biochemistry with Emphasis on Theoretical Chemistry;

    Sammanfattning : The recent determination of several crystal structures of voltage-gated ion channels has catalyzed computational efforts of studying these remarkable molecular machines that are able to conduct ions across biological membranes at extremely high rates without compromising the ion selectivity. Starting from the open crystal structures, we have studied the gating mechanism of these channels by molecular modeling techniques. LÄS MER