Search for dissertations about: "Britt-marie Sjöberg"

Showing result 1 - 5 of 11 swedish dissertations containing the words Britt-marie Sjöberg.

  2. 1. Perception of risk : studies of risk attitudes, perceptions and definitions

    Author : Britt-Marie Drottz-Sjöberg; Handelshögskolan i Stockholm; []
    Keywords : SAMHÄLLSVETENSKAP; SOCIAL SCIENCES;

    Abstract : .... READ MORE

  4. 2. Metal ion cooperativity in Escherichia coli RNase P RNA

    Author : Mathias Brännvall; Britt-Marie Sjöberg; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Cell and molecular biology; RNase P; divalent metal ions; substrate interaction; Cell- och molekylärbiologi; Cell and molecular biology; Cell- och molekylärbiologi; mikrobiologi; Microbiology;

    Abstract : RNase P is an essential ribonuclease responsible for removal of the 5’ leader of tRNA precursors. Bacterial RNase P consists of an RNA subunit and a small basic protein. The catalytic activity is associated with the RNA subunit, i.e. READ MORE

  5. 3. Quaternary structure and interaction approaches to allosteric regulation of class I ribonucleotide reductases

    Author : Mikael Crona; Britt-Marie Sjöberg; Mark Meuth; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Ribonucleotide reductase; allosteric regulation; quaternary structure; subunit interactions; enzyme activity; SPR; GEMMA; Molecular biology; Molekylärbiologi; Molecular Biology; molekylärbiologi;

    Abstract : Deoxyribonucleic acid (DNA) chains in which our genetic blueprint is stored are built from four DNA precursors by DNA polymerases. The enzyme ribonucleotide reductase (RNR) provides the only de novo synthesis pathway of deoxyribonucleotides from ribonucleotides and is essential for nearly all organisms. READ MORE

  6. 4. The deep evolutionary roots of non-coding RNA - a comparative genomics approach

    Author : Marc Patrick Hoeppner; Anthony M. Poole; Britt-Marie Sjöberg; Jürgen Brosius; Stockholms universitet; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; non-coding RNA; evolution; comparative genomics; RNA world; introns; snoRNA; miRNA; Molecular biology; Molekylärbiologi; Molecular Biology; molekylärbiologi;

    Abstract : Non-coding RNAs (ncRNA) are a diverse group of genes that do not encode proteins but function exclusively on the level of RNA and were originally suggested to be remnants of a pre-DNA stage of life known as the RNA world. More recent work, however, has uncovered a rich repertoire of previously unknown families with possible consequences for our understanding of the origin and evolution of the modern RNA infrastructure. READ MORE

  7. 5. Reaction Mechanism and Allosteric Regulation of Class Ia Ribonucleotide Reductase from Escherichia coli

    Author : Alex Kasrayan; Britt-Marie Sjöberg; Bengt-Harald Jonsson; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Molecular biology; Molekylärbiologi;

    Abstract : Ribonculeotide reductase (RNR) plays a key role in catalysing a reaction that provides all living organisms with building blocks for DNA. The RNR enzyme catalyses the conversion of ribonucleotides to their corresponding deoxyribonucleotides, by using free radical chemistry. READ MORE