Search for dissertations about: "pichia-pastoris"

Showing result 1 - 5 of 53 swedish dissertations containing the word pichia-pastoris.

  2. 1. Heterologous expression and characterization of xyloglucan endotransglycosylases from Populus tremula x tremuloides

    Author : Åsa Kallas; KTH; []
    Keywords : xyloglucan endotransglycosylase; transglycosylation; hybrid aspen; cell expansion; heterologous expression; Pichia pastoris; N-glycosylation; X-ray crystallography;

    Abstract : Xyloglucan endotransglycosylases (XETs) are enzymes involvedin the reorganization of the primary cell wall. This thesisdescribes several aspects of XET16A from hybrid aspen (Populustremula x tremuloides). The gene was isolated from the hybridaspen cDNA library and the protein was expressed heterologouslyin the methylotrophic yeast Pichia pastoris. READ MORE

  4. 2. Expression and Mutagenesis studies of Candida antactica lipase B

    Author : Johanna C. Rotticci-Mulder; KTH; []
    Keywords : Protein expression; Candida antarctica lipase B; Pichia pastoris; site-directed mutagenesis; fermentation; selection;

    Abstract : Recombinant Candida antarctica lipase B was successfullyproduced in the methylotropic yeast Pichia pastoris. Thespecific activities of Candida antarctica lipase B produced inPichia pastoris and commercial Candida antarctica lipase B fromNovozymes were the same. In shake-flask cultivations theexpression levels were about 25 mg L-1. READ MORE

  5. 3. Recombinant Enzymes in Pyrosequencing Technology

    Author : Nader Nourizad; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; apyrase; pyrosequencing; pichia pastoris; protein expression; fusion protein; luciferase; DNA template; clone checking; DNA polymerase;

    Abstract : Pyrosequencing is a DNA sequencing method based on thedetection of released pyrophosphate (PPi) during DNA synthesis.In a cascade of enzymatic reactions, visible light isgenerated, which is proportional to the number of nucleotidesincorporated into the DNA template. When dNTP(s) areincorporated into the DNA template, inorganic PPi is released. READ MORE

  6. 4. Expression and Function of Human and Plant Aquaporins

    Author : Maria Agemark; Biokemi och Strukturbiologi; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; aquaporin; water channel; overexpression; Pichia pastoris; AQP8; AQP5; SoPIP2; 1;

    Abstract : The aquaporins (AQPs) belong to a family of water permeable membrane channels found in virtually all living organisms. Thirteen isoforms of mammalian AQPs are found, whereas in Arabidopsis thaliana 35 genes encoding AQPs are found. The AQPs are distributed in different organs, cell types and in different subcellular membranes. READ MORE

  7. 5. Production and engineering of a xyloglucan endo-transglycosylase from Populus tremula x tremuloides

    Author : Maria Henriksson; Tuula Teeri; KTH; []
    Keywords : LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; xyloglucan endo-transglycosylase; retaining glycoside hydrolase; glycosynthase; Pichia pastoris; fed-batch fermentation; expanded-bed adsorption; Plant biotechnology; Växtbioteknik;

    Abstract : The aim of this work was to develop a production process for the enzyme xyloglucan endo-transglycosylase from Populus tremula x tremuloides (PttXET16-34). The natural transglycosylating activity of this enzyme has previously been employed in a XET-Technology. READ MORE