Sökning: "medicinsk biokemi"

Visar resultat 31 - 35 av 428 avhandlingar innehållade orden medicinsk biokemi.

  1. 31. Adaptive Responses by Transcriptional Regulators to small molecules in Prokaryotes : Structural studies of two bacterial one-component signal transduction systems DntR and HpNikR

    Författare :Cyril Dian; Peter Brzezinski; Séan McSweeney; Elisabeth Sauer-Eriksson; Stockholms universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; transcription regulator; bacterial biosensor; LysR family; Inducer-binding; nickel-sensing; NikR; signal transduction system; Helicobacter pylori; Biochemistry; Biokemi; biokemi; Biochemistry;

    Sammanfattning : Prokaryotes are continually exposed to variations in their environment. Survival in unstable milieu requires a wide range of transcriptional regulators (TRs) that respond to specific environmental and cellular signals by modulating gene expression and provide an appropriate physiological response to external stimuli. LÄS MER

  3. 32. Transmembrane proton transfer in biological systems : an investigation of bacterial and archaeal haem-copper oxidases

    Författare :Gwen Gilderson; Ólöf Einarsdóttir; Stockholms universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Biochemistry; Biokemi; biokemi; Biochemistry;

    Sammanfattning : Haem-copper oxidases are membrane-bound protein complexes that catalyse the reduction of dioxygen to water in the respiratory chain. These enzyme complexes are molecular machines that couple the free energy released from this reaction to pump protons across the membrane. LÄS MER

  4. 33. Structural Studies of Microbial Proteins - From Escherichia coli and Herpesviruses

    Författare :Daniel Gurmu; Heidi Erlandsen; Pär Nordlund; Arne O. Smalås; Stockholms universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; CaiB; RibD; YhaK; SOX; ORF60; Herpesvirus; E. coli; Biochemistry; Biokemi; Biochemistry; biokemi;

    Sammanfattning : Structure biology concerns the study of the molecular structures of biological macromolecules, such as proteins, and how these relate to the function. Protein structures are also of importance in structure-based drug design. In this thesis, the work has been carried out in two different projects. LÄS MER

  5. 34. Light stress proteins from Arabidopsis thaliana : identification, characterisation and expression

    Författare :Mounia Heddad; Phillip Mullineaux; Stockholms universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Biochemistry; Biokemi; biokemi; Biochemistry;

    Sammanfattning : Plants are major players in the vital process of photosynthesis that takes place in organelles called chloroplasts. Plant's immobility makes them victims of the tremendous fluctuations in light intensity and quality that often lead to inhibition of their physiological functions. LÄS MER

  7. 35. Radical generation and stabilisation in ribonucleotide reductase R2

    Författare :Martin Högbom; Lawrence Que; Stockholms universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Biochemistry; Biokemi; Biochemistry; biokemi;

    Sammanfattning : Diiron carboxylate proteins contain a cofactor that consists of two iron atoms coordinated by carboxylate and histidine ligands. These proteins perform a multitude of chemical reactions in the cell that generally involve activation of molecular oxygen at the diiron site. LÄS MER