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  1. 1. The consequences of DNA lesions for mitochondrial DNA maintenance

    Författare :Josefin M. E. Forslund; Sjoerd Wanrooij; Nasim Sabouri; Erik Johansson; Claes Gustafsson; Umeå universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Mitochondria; mitochondrial DNA; DNA replication; DNA lesions; DNA polymerase γ; ribonucleotide incorporation; medicinsk biokemi; Medical Biochemistry;

    Sammanfattning : Eukaryotic cells have their own energy-producing organelles called mitochondria. The energy is stored in the adenosine triphosphate (ATP) molecule and is produced via the oxidative phosphorylation process inside the mitochondria. Thirteen of the essential proteins required for this process are encoded on the mitochondrial DNA (mtDNA). LÄS MER

  3. 2. Structural Adaptation of DNA to Small Ligands and Recombination Proteins

    Författare :Hye-Kyung Kim; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; triplex DNA; groove binders; intercalators; SANS; DNA; optical spectroscopy; recombination proteins;

    Sammanfattning : In order to contribute to the understanding of mechanisms of recognition in nucleic acid systems, the interaction of DNA with a variety of ligands, representing different cases of adaptation of the double-helix structure, was studied using flow linear dichroism (LD), circular dichroism (CD), fluorescence and absorption spectroscopic techniques. A chiral hydrophobic metal complex, [Ru(dpphen)3]2+ was examined, since this had been reported to be the most efficient molecule to discriminate DNA handedness. LÄS MER

  4. 3. Structure of eukaryotic DNA polymerase epsilon and lesion bypass capability

    Författare :Nasim Sabouri; Erik Johansson; Lars Thelander; Ola Hammarsten; Umeå universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; DNA polymerase epsilon; DNA replication; Okazaki fragment; Translesion synthesis; DNA lesion; dNTP; Biochemistry; Biokemi;

    Sammanfattning : To transfer the information in the genome from mother cell to daughter cell, the DNA replication must be carried out only once and with very high fidelity prior to every cell division. In yeast there are several different DNA polymerases involved in DNA replication and/or DNA repair. LÄS MER

  5. 4. Role of yeast DNA polymerase epsilon during DNA replication

    Författare :Isabelle Isoz; Erik Johansson; Juhani Syväoja; Umeå universitet; []
    Nyckelord :LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; DNA polymerase epsilon; eukaryotic DNA replication; fidelity; leading strand; Dpb2; Biochemistry and clinical chemistry; Biokemi och klinisk kemi;

    Sammanfattning : Each cell division, the nuclear DNA must be replicated efficiently and with high accuracy to avoid mutations which can have an effect on cell function. There are three replicative DNA polymerases essential for the synthesis of DNA during replication in eukaryotic cells. LÄS MER

  7. 5. Sensitive Identification Tools in Forensic DNA Analysis

    Författare :Hanna Edlund; Marie Allen; Niels Morling; Uppsala universitet; []
    Nyckelord :forensic genetics; STRs; Y-chromosome; Pyrosequencing; mitochondrial DNA; skeletal remains; DNA extraction; MEDICINE; MEDICIN; Medicinsk genetik; Medical Genetics;

    Sammanfattning : DNA as forensic evidence is valuable in criminal investigations. Implementation of new, sensitive and fast technologies is an important part of forensic genetic research. This thesis aims to evaluate new sensitive methods to apply in forensic DNA analysis including analysis of old skeletal remains. LÄS MER