Search for dissertations about: "enzyme catalysis"

Showing result 1 - 5 of 144 swedish dissertations containing the words enzyme catalysis.

  1. 1. Molecular Simulation of Enzyme Catalysis and Inhibition

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

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

    Abstract : 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. READ MORE

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

    University dissertation from Stockholm : KTH Royal Institute of Technology

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

    Abstract : 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. READ MORE

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

    University dissertation from Stockholm : KTH

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

    Abstract : 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. READ MORE

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

    University dissertation from Stockholm : Department of Organic Chemistry, Stockholm University

    Author : Jonas Nyhlén; Stockholms universitet.; [2010]
    Keywords : 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;

    Abstract : 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. READ MORE

  5. 5. Intermediate State Stabilisation in Enzyme Catalysis Structural studies of two serine proteases and a photosynthetic reaction centre

    University dissertation from Stockholm : Department of Organic Chemistry, Stockholm University

    Author : Gergely Katona; [2004]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; photosynthetic reaction centre; X-ray crystallography; structural mechanism; enzyme kinetics; serine protease; enzyme intermediate; enzyme catalysis;

    Abstract : Enzymes play a key role in every organisms life. They catalyse chemical reactions and may also respond to external stimulus. The reoccurring theme of this thesis is how biologically relevant information can be gleaned from X-ray structures of the enzymes. READ MORE