Search for dissertations about: "Cluster evolution"

Showing result 1 - 5 of 58 swedish dissertations containing the words Cluster evolution.

  1. 1. Evolution of cellular complexity and other remarkable features in Gemmataceae Complex bacterial lineages defy prokaryotic trends

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Mayank Mahajan; Uppsala universitet.; [2019]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Molecular evolution; Planctomycetes; Gemmataceae; functional organization; signalling; protein interaction; peptidoglycan; membranes; cell division; radiation tolerance; Pfam; SCOP; comparative genomics; protein architecture; domain shuffling and orthologous clustering; Bioinformatics; Bioinformatik; Biologi med inriktning mot molekylär evolution; Biology with specialization in Molecular Evolution; Biology with specialization in Molecular Biology; Biologi med inriktning mot molekylärbiologi;

    Abstract : Bacteria of the family Gemmataceae belong the phylum Planctomycetes and are remarkable because of their complex cellular architectures, previously considered to be traits exclusive to eukaryotes. This thesis provides clues to the atypical cell envelope, the enhanced radiotolerance and the amazing cellular complexity of these bacteria. READ MORE

  2. 2. Evolutionary Processes and Genome Dynamics in Host-Adapted Bacteria

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Björn Nystedt; Uppsala universitet.; [2009]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; molecular evolution; pathogen; secretion system; Bartonella; Buchnera; Blochmannia; Helicobacter; NATURAL SCIENCES Biology Other biology Bioinformatics; NATURVETENSKAP Biologi Övrig biologi Bioinformatik; Evolutionary Genetics; evolutionär genetik;

    Abstract : Many bacteria live in close association with other organisms such as plants and animals, with important implications for both health and disease. This thesis investigates bacteria that are well adapted to live inside an animal host, and describes the molecular evolutionary processes underlying host-adaptation, based on bacterial genome comparisons. READ MORE

  3. 3. Microbial evolution: patterns of diversity in aquatic protists

    University dissertation from Limnology, Department of Ecology, Lund University

    Author : Ramiro Logares; Lunds universitet.; Lund University.; [2007]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; dinoflagellates; biodiversity; lakes; Evolution; diversification; microbes; biogeography;

    Abstract : Little is known about how microbes diversify in nature. In contrast to the more studied multicellular organisms, microbes can have a) huge population sizes, b) high reproductive rates and c) long-distance dispersal. These characteristics can affect their tempo and mode of diversification in ways that still need to be understood. READ MORE

  4. 4. The evolution of the nuclear envelope

    University dissertation from Stockholm : Department of Molecular Biology and Functional Genomics, Stockholm University

    Author : Nadja Neumann; Stockholms universitet.; [2010]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Nuclear pore complex; bouquet; meiosis; nucleus; eukaryote evolution; nucleoporin; tree of life; stem group; recombination; NATURAL SCIENCES Biology Cell and molecular biology Molecular biology; NATURVETENSKAP Biologi Cell- och molekylärbiologi Molekylärbiologi; Molecular Biology; molekylärbiologi;

    Abstract : The nucleus is one of the defining features of eukaryotes and the question of its origin is intimately linked to the evolution of the eukaryotic cell. It is delimited by a double lipid bilayer called the nuclear envelope, which separates the nuclear interior from the cytoplasm. READ MORE

  5. 5. Directed Enzyme Evolution of Theta Class Glutathione Transferase Studies of Recombinant Libraries and Enhancement of Activity toward the Anticancer Drug 1,3-bis(2-Chloroethyl)-1-nitrosourea

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Anna-Karin Larsson; Uppsala universitet.; [2003]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Biochemistry; glutathione transferase; directed evolution; 1; 3-bis 2-chloroethyl -1-nitrosourea; alkyltransferase; recombinant libraries; chloroethylnitrosourea; multi-dimensional data analysis; Biokemi; NATURAL SCIENCES Chemistry Biochemistry; NATURVETENSKAP Kemi Biokemi;

    Abstract : Glutathione transferases (GSTs) are detoxication enzymes involved in the cellular protection against a wide range of reactive substances. The role of GSTs is to catalyze the conjugation of glutathione with electrophilic compounds, which generally results in less toxic products. READ MORE