Sökning: "prokaryotic"

Visar resultat 1 - 5 av 16 uppsatser innehållade ordet prokaryotic.

  1. 1. The evolutionary origins of phagocytosis in microbial populations

    Uppsats för yrkesexamina på avancerad nivå, Umeå universitet/Institutionen för fysik

    Författare :Alfred Leimar; [2022]
    Nyckelord :Theoretical ecology; phagocytosis; predation; adaptive dynamics;

    Sammanfattning : The emergence of the eukaryotic cell was one of the key events that paved the path to the vast variety of complex life visible all around us. A pivotal event in the process of eukaryogenesis was an endosymbiosis of two prokaryotic cells which in time resulted in the mitochondria. LÄS MER

  3. 2. Trade-offs in CRISPR Immunity against Mobile Genetic Elements

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Molekylär systembiologi

    Författare :Johanna Cederblad; [2022]
    Nyckelord :CRISPR; microfluidics; fluorescent microscopy; RP4 conjugative plasmid;

    Sammanfattning : The prokaryotic adaptive immune system CRISPR (Clustered Regularly Interspaced Short Palindromic Repeats) is a defense mechanism that helps to protect the prokaryotic cell from invading mobile genetic elements. This project was performed at Uppsala University and served to answer whether the expression of Cascade, which is part of the CRISPR defense system, will have a negative effect on the cell that expresses it and to also determine whether the CRISPR defense system is effective enough to stop the spread of a conjugative plasmid. LÄS MER

  4. 3. Extraction of gating mechanisms from Markov state models of a pentameric ligand-gated ion channel

    Master-uppsats, KTH/Proteinvetenskap

    Författare :Dimitrios Karalis; [2021]
    Nyckelord :GLIC; Markov state models MSMs ; KL divergence; Machine Learning ML ; pentameric ligand-gated ion channel pLGIC ; channel gating;

    Sammanfattning : GLIC är en pH-känslig pentamerisk ligandstyrd jonkanal (pLGIC) som finns i cellmembranet hos prokaryoten Gloeobacter violaceus. GLIC är en bakteriell homolog till flera receptorer som är viktiga i nervsystemet hos de flesta eukaryotiska organismer. LÄS MER

  5. 4. The influence of diel cycles on the bacterial community composition of two boreal lakes : A case study in Jämtland

    Master-uppsats, Uppsala universitet/Limnologi; Uppsala universitet/Institutionen för biologisk grundutbildning

    Författare :Sofia Papadopoulou; [2021]
    Nyckelord :freshwater; lake; diel cycle; bacterioplankton; bacterial community composition;

    Sammanfattning : In the Boreal region, the length of day and night varies extremely over the year and organisms are exposed to different diel (24 h) fluctuations of light and temperature. Among them are pelagic populations of bacteria that are ubiquitous in freshwater ecosystems. LÄS MER

  7. 5. Single-particle tracking for direct measurements of Trigger Factor ribosome binding in live cells

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Molekylärbiologi

    Författare :Tora Hävermark; [2021]
    Nyckelord :Trigger Factor; Single-particle tracking; in vivo kinetics; co-translational polypeptide processing;

    Sammanfattning : Trigger Factor (TF) is a prokaryotic chaperone protein that exerts its major chaperone activity while associated with translating ribosomes, assisting de novo folding of the emerging nascent chain. Although much is known about the kinetics behind TF-ribosome binding, most results are based on in vitro experiments which fail to mimic the cellular environment. LÄS MER