Sökning: "Glutathione Transferases"

Visar resultat 16 - 20 av 59 avhandlingar innehållade orden Glutathione Transferases.

  1. 16. Studies on hepatic glutathione transferases from rat and man : 1. A kinetic mechanism for glutathione transferase A from rat liver. 2. Transferase µ, a new form of glutathione transferase in human liver

    Författare :Margareta Warholm; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : This study of glutathione transferases was undertaken to achieve a better understanding of the catalytic and molecular properties of various isozymes of this group of drug-metabolizing enzymes.The steady-state kinetics of purified glutathione transferase A from rat liver with glutathione (GSH) and 1,2-dichloro- 4-nitrobenzene as substrates, did not follow a simple Michaelis- Menten equation. LÄS MER

  3. 17. Directed Evolution of Glutathione Transferases Guided by Multivariate Data Analysis

    Författare :Sanela Kurtovic; Bengt Mannervik; Ulf Hellman; Denis Pompon; Uppsala universitet; []
    Nyckelord :Biochemistry; DNA shuffling; substrate selectivity; mutant library; glutathione transferase; multivariate data analysis; prodrug; Biokemi;

    Sammanfattning : Evolution of enzymes with novel functional properties has gained much attention in recent years. Naturally evolved enzymes are adapted to work in living cells under physiological conditions, circumstances that are not always available for industrial processes calling for novel and better catalysts. LÄS MER

  4. 18. Directed Evolution of Glutathione Transferases with Altered Substrate Selectivity Profiles : A Laboratory Evolution Study Shedding Light on the Multidimensional Nature of Epistasis

    Författare :Wei Zhang; Bengt Mannervik; Bengt-Harald Jonsson; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; glutathione transferase; azathioprine; directed evolution; semi-rational design; catalytic mechanism; saturation mutagenesis; reduced amino acid alphabets; molecular docking; protein evolution; multivariate data analysis; epistasis; fitness landscape; evolutionary trajectories; Biochemistry; Biokemi; Biokemi; Biochemistry;

    Sammanfattning : Directed evolution is generally regarded as a useful approach in protein engineering. By subjecting members of a mutant library to the power of Darwinian evolution, desired protein properties are obtained. Numerous reports have appeared in the literature showing the success of tailoring proteins for various applications by this method. LÄS MER

  5. 19. Modulating Enzyme Functions by Semi-Rational Redesign and Chemical Modifications : A Study on Mu-class Glutathione Transferases

    Författare :Malena A Norrgård; Bengt Mannervik; Birgitta Tomkinson; Timothy Mantle; Uppsala universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; protein redesign; semi-rational redesign; saturation mutagenesis; iterative saturation mutagenesis; chemical modification; Cys; Cys-X scanning; enzyme evolution; promiscuous; substrate selectivity; enantioselectivity; Biochemistry; Biokemi; Biokemi; Biochemistry;

    Sammanfattning : Today, enzymes are extensively used for many industrial applications, this includes bulk and fine-chemical synthesis, pharmaceuticals and consumer products. Though Nature has perfected enzymes for many millions of years, they seldom reach industrial performance targets. LÄS MER

  7. 20. Glutathione transferases in rat and mouse tissues : purification and characterization

    Författare :Helgi Jensson; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : .... LÄS MER