Sökning: "subtilisin"

Visar resultat 6 - 10 av 25 avhandlingar innehållade ordet subtilisin.

  1. 6. Resolution of Dynamic Systems: Applications in Asymmetric Synthesis and Materials Science

    Författare :Lei Hu; Olof Ramström; Douglas Philp; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Kemi; Chemistry;

    Sammanfattning : This thesis is built on the concepts of constitutional dynamic chemistry and dynamic kinetic resolution, where reversible covalent reactions are used to generate dynamics and kinetically controlled reactions are employed for resolution. The thesis is divided into two parts:The first section focuses on the study of dynamic systemic resolution, a concept derived from constitutional dynamic chemistry. LÄS MER

  3. 7. Enantioselective Synthesis of Sec-Alcohol Derivatives and Diols via Combined Ruthenium and Enzyme Catalysis

    Författare :Linnéa Borén; Jan-Erling Bäckvall; Romas Kazlauskas; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; catalysis; kinetic resolution; ruthenium catalyst; Dynamic kinetic resolution; Dynamic Kinetic Asymmetric Transformation; Organic chemistry; Organisk kemi; Organic Chemistry; organisk kemi;

    Sammanfattning : The first part of this thesis describes the synthesis of enantiopure secondary alcohol derivatives. These syntheses are carried out via the combination of an enzyme as a resolution catalyst and a ruthenium catalyst as a racemization catalyst, in what is called dynamic kinetic resolution (DKR). LÄS MER

  4. 8. Studies on mRNA turnover in bacteria

    Författare :Martin Persson; Biologiska institutionen; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Microbiology; aprE; GlpP; glpD; mRNA secondary structure; Bacillus subtilis; mRNA stability; bacteriology; virology; mycology; Mikrobiologi; bakteriologi; virologi; mykologi;

    Sammanfattning : Genetic information, which is stored in DNA, is transferred to messenger RNA (mRNA) in a process called transcription. mRNAs are then translated by ribosomes into proteins which, with some important exceptions, catalyze chemical reactions in cells. Since cells must be able to adapt to changes in the environment, mRNAs must be unstable. LÄS MER

  5. 9. Identification of molecular markers associated with fungal resistance in Norway spruce and common ash

    Författare :Rajiv Chaudhary; Sveriges lantbruksuniversitet; Sveriges lantbruksuniversitet; []
    Nyckelord :LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES;

    Sammanfattning : Trees are giants of the forests, possessing nutrient-rich tissues that make them natural targets for pathogens. In Europe, the fungal pathogens Heterobasidion annosum s.l. and Hymenoscyphus fraxineus are associated with Norway spruce and common ash, respectively. LÄS MER

  7. 10. Heterogeneous catalysis in racemization and kinetic resolution along a journey in protein engineering

    Författare :Tamás Görbe; Jan-Erling Bäckvall; Frank Hollmann; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; racemization; protein engineering; kinetic resolution; heterogeneous catalysis; biohybrid catalyst; organisk kemi; Organic Chemistry;

    Sammanfattning : The first part of my thesis concerns the use of heterogeneous acidic resins for racemization of tert-alcohols without any side-product formation. The focus was to develop a system which can be further extended to a DKR protocol consisting of an enzymatic KR reaction. LÄS MER