Search for dissertations about: "enzyme substitution"
Showing result 1 - 5 of 66 swedish dissertations containing the words enzyme substitution.
-
1. Synthesis of xyloglucan oligo- and polysaccharides with glycosynthase technology
Abstract : Xyloglucans are polysaccharides found as storage polymers in seeds and tubers, and as cross-linking glycans in the cell wall of plants. Their structure is complex with intricate branching patterns, which contribute to the physical properties of the polysaccharide including its binding to and interaction with other glycans such as cellulose. READ MORE
-
2. Probing the Alpha Class Glutathione Transferase Structure. Combinatorial Subunit Studies and Rational Redesign
Abstract : The present work concerns two Alpha class enzymes, GST A1-1 and GST A4-4, of the glutathione transferase (GST) family, which are detoxication enzymes catalyzing the conjugation of the tripeptide glutathione with various electrophiles. The GST A1-1 structure was explored for protein engineering purposes and tailored for increased activity toward alkenals. READ MORE
-
3. Asymmetric Synthesis and Mechanistic Studies on Copper(I)-Catalyzed Substitution of Allylic Substrates
Abstract : This thesis deals with the copper-catalyzed substitution of allylic substrates.In the first part of this thesis, the synthesis of a series of metallocenethiolates is described. The thiolates were examined as ligands in the enantioselective copper(I)-catalyzed γ-substitution of allylic acetates. READ MORE
-
4. Thiopurine S-methyltransferase - characterization of variants and ligand binding
Abstract : Thiopurine S-methyltransferase (TPMT) belongs to the Class I S-adenosylmethionine-dependent methyltransferase (SAM-MT) super family of structurally related proteins. Common to the members of this large protein family is the catalysis of methylation reactions using S-adenosylmethionine (SAM) as a methyl group donor, although SAM-MTs act on a wide range of different substrates and carry out numerous biologically important functions. READ MORE
-
5. N-Heterocyclic Carbene Catalysis in Organic Synthesis - A Green Chemistry Approach
Abstract : The twelve principles of green chemistry were created as a response to the multiple environmental issues caused by the release of waste from the chemical industry. The principles acts as a guide in the development of sustainable chemical processes for the syntheses of important molecules needed to sustain our living standards. READ MORE