Sökning: "C. coli"

Visar resultat 16 - 20 av 186 avhandlingar innehållade orden C. coli.

  1. 16. Molecular Studies of Three Coliphage Repressor Proteins P2 C, P2 Hy dis C and Wphi C : Kinetics, Oligomeric States and Structural Studies

    Författare :Petri Henriksson Peltola; Elisabeth Haggård-Ljungquist; Sankar Adhya; Stockholms universitet; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP; molekylärgenetik; Molecular Genetics;

    Sammanfattning : P2, P2 Hy dis and WΦ are heteroimmune and closely related E. coli phages that can either grow lytically or form lysogeny after infection. The developmental switch region that contains two divergent promoters, the early Pe and the lysogenic Pc promoter, and two repressors, controls the life mode of the phage. LÄS MER

  3. 17. Cotranslational protein biogenesis in Escherichia coli monitored by force profile analysis

    Författare :Felix Nicolaus; Gunnar von Heijne; Ross Dalbey; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Escherichia coli; cotranslational protein biogenesis; membrane protein; soluble protein; transmembrane helices; force profile analysis; arrest peptide; biokemi; Biochemistry;

    Sammanfattning : Proteins are a diverse class of biomolecules that carry out many essential functions across all organisms. They can either be found in aqueous compartments or embedded in biological membranes of the cell and are called soluble or membrane proteins, respectively. LÄS MER

  4. 18. The temperature-limited fed-batch technique for control of Escherichia coli cultures

    Författare :Marie Svensson; Sven-Olof Enfors; John Villadsen; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Endotoxin; Escherichia coli; fed-batch technique; glucose-limitation; mathematical model; Bioengineering; Bioteknik;

    Sammanfattning : The objective of this study was to investigate the physiology and productivity in Escherichia colicultures with emphasis on the temperature-limited fed-batch (TLFB) culture. The TLFB techniquecontrols the oxygen consumption rate of the growing culture by a gradually declining temperaturefrom 37-35 °C down to 20-18 °C. LÄS MER

  5. 19. Ribosomal RNA Modification Enzymes : Structural and functional studies of two methyltransferases for 23S rRNA modification in Escherichia coli

    Författare :Avinash S. Punekar; Maria Selmer; Martino Bolognesi; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Escherichia coli; ribosome biogenesis; ribosome assembly; ribosomal RNA; peptidyltransferase center; domain V; post-transcriptional modification; methyltransferases; S-adenosyl-methionine; RlmM; Cm2498; RlmJ; m6A2030; X-ray crystallography; substrate recognition; substrate specificity; catalytic mechanism; evolution; Biology with specialization in Structural Biology; Biologi med inriktning mot strukturbiologi; Biokemi; Biochemistry;

    Sammanfattning : Escherichia coli ribosomal RNA (rRNA) is post-transcriptionally modified by site-specific enzymes. The role of most modifications is not known and little is known about how these enzymes recognize their target substrates. LÄS MER

  7. 20. Synthesis and functionalization of ring-fused 2-pyridones : Targeting pili formation in E. coli

    Författare :Nils Pemberton; Fredrik Almqvist; Oliver Kappe; Umeå universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; 2-pyridone; acylketene; antibacterial; biofilm inhibitor; Mannich; Micro-wave-assisted chemistry; peptidomimetic; virulence.; Organic synthesis; Organisk syntes;

    Sammanfattning : Bicyclic dihydrothiazolo fused 2-pyridones have been studied as a new class of antibacterial agents, termed pilicides, that target the formation of adhesive bacterial surface organelles (pili) in pathogenic bacteria. Synthetic methods to further functionalize the bicyclic 2-pyridone scaffold have been developed in order to increase water-solubility and thereby facilitate biological evalua-tions. LÄS MER