Sökning: "KA"
Visar resultat 1 - 5 av 117 avhandlingar innehållade ordet KA.
1. Recognition and Separation of Hemoglobin Variants via Molecularly Imprinted Polymers
Sammanfattning : Hemoglobin (Hb) is the predominant protein in red blood cells with allosteric regulation mechanisms for delivering oxygen between the lungs and tissues. After the 1980s, concentrated research on modified Hb emerged because of the necessity for the development of a blood substitute (oxygen carrier). LÄS MER
2. Ribosomal Peptidyl Transfer with Natural and Unnatural Amino Acids
Sammanfattning : .... LÄS MER
3. Gene Expression in the Brains of Two Lines of Chicken Divergently Selected for High and Low Body Weight
Sammanfattning : Artificial divergent selection of chickens for high and low body weight at 8 weeks of age has produced two lines: the high (HWS) and low (LWS) body weight chicken lines. In addition to the difference in body weight, the lines show extreme differences in feeding behaviour and body composition. LÄS MER
4. Location and Relocation of Seismic Sources
Sammanfattning : This dissertation is a comprehensive summary of four papers on the development and application of new strategies for locating tremor and relocating events in earthquake catalogs.In the first paper, two new strategies for relocating events in a catalog are introduced. LÄS MER
5. Rate and Accuracy of Bacterial Protein Synthesis with Natural and Unnatural Amino Acids
Sammanfattning : This thesis addresses different questions regarding the rate, efficiency, and accuracy of peptide bond formation with natural as well as unnatural amino acids: Which step is rate-limiting during peptide bond formation? How does the accuracy vary with different transfer RNAs (tRNAs) and codons and how is it relevant to the living cells? Does proofreading selection of codon reading occur in a single- or multi-step manner as theoretically suggested? How does the E. coli translation system discriminate unnatural amino acids? Based on that, how to improve the incorporation efficiencies of unnatural amino acids?Based on the study on pH dependence of peptide bond formation, we show that the rate of the chemistry of peptidyl transfer to aminoacyl-tRNA (AA-tRNA) Gly-tRNAGly or Pro-tRNAPro limits the rate of peptide bond formation at physiological pH 7. LÄS MER