Sökning: "enzyme catalysis"

Visar resultat 1 - 5 av 148 avhandlingar innehållade orden enzyme catalysis.

  1. 1. Enzyme catalysis towards bio-based UV-curable buildingblocks

    Detta är en avhandling från Stockholm : KTH Royal Institute of Technology

    Författare :Maja Finnveden; KTH.; [2019]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; Enzyme; Enzymatic Polymerizations; Biocatalysis; Lipase; CalB; MsAcT; Substrate specificity; Selectivity; Polymer Chemistry; UV-curring; Biotechnology; Bioteknologi;

    Sammanfattning : Polymeric materials are found in virtually all areas of daily life; they are found in everything from packages keeping our food safe to the buildings where we spend our days, and the production is a worldwide industry. Although polymeric materials play a big part in sustainable solution’s, a lot can be done to develop more environmental methods for producing them. LÄS MER

  2. 2. Molecular Simulation of Enzyme Catalysis and Inhibition

    Detta är en avhandling från Uppsala : Acta Universitatis Upsaliensis

    Författare :Sinisa Bjelic; Uppsala universitet.; [2007]
    Nyckelord :Theoretical chemistry; enzyme catalysis; enzyme inhibition; computer simulations; molecular dynamics; empirical valence bond method; structure-based inhibitor design; Teoretisk kemi;

    Sammanfattning : The reaction mechanisms for the hemoglobin degrading enzymes in the Plasmodium falciparum malaria parasite, plasmepsin II (Plm II) and histo-aspartic protease (HAP), have been analyzed by molecular simulations. The reaction free energy profiles, calculated by the empirical valence bond (EVB) method in combination with molecular dynamics (MD) and free energy perturbation (FEP) simulations are in good agreement with experimental data. LÄS MER

  3. 3. Building blocks for polymer synthesis by enzymatic catalysis

    Detta är en avhandling från Stockholm : KTH Royal Institute of Technology

    Författare :Stefan Semlitsch; KTH.; [2017]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Enzyme; Enzyme Engineering; Biocatalysis; Lipase; CalB; MsAcT; Substrate specificity; Selectivity; Polymer Chemistry; Polymer Synthesis; Biotechnology; Bioteknologi;

    Sammanfattning : The search for alternatives to oil-based monomers has sparked interest for scientists to focus on the use of renewable resources for energy production, for the synthesis of polymeric materials and in other areas. With the use of renewable resources, scientists face new challenges to first isolate interesting molecules and then to process them. LÄS MER

  4. 4. Enthalpy and Entropy in Enzyme Catalysis A Study of Lipase Enantioselectivity

    Detta är en avhandling från Stockholm : KTH

    Författare :Jenny Ottosson; KTH.; [2001]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Biocatalysis; enzyme catalysis; Candida antarctica lipase B; enantioselectivity; enthalpy; entropy; CALB; enantiomeric ratio; TECHNOLOGY Bioengineering; TEKNIKVETENSKAP Bioteknik;

    Sammanfattning : Biocatalysis has become a popular technique in organic synthesis due to high activity and selectivity of enzyme catalyzed reactions. Enantioselectivity is a particularly attractive enzyme property, which is utilized for the production of enantiopure substances. LÄS MER

  5. 5. Theoretical modeling of metal- and enzyme catalyzed transformations

    Detta är en avhandling från Stockholm : Department of Organic Chemistry, Stockholm University

    Författare :Jonas Nyhlén; Stockholms universitet.; [2010]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; density functinal theory; computational chemistry; directed evolution; enzyme; mechanistic studies; catalysis; ruthenium; hydrogen transfer; racemization; artificial photosynthesis; frustrated lewis pairs; hydrogen storage; NATURAL SCIENCES Chemistry Organic chemistry; NATURVETENSKAP Kemi Organisk kemi; organisk kemi; Organic Chemistry;

    Sammanfattning : This thesis is focused on describing and predicting catalytic reactions. The major part of the work is based on density functional theory (DFT). In some cases where the size of the investigated system precluded the use of more accurate methods molecular dynamics was employed. LÄS MER