Sökning: "Amino Acid Sequence"
Visar resultat 11 - 15 av 346 avhandlingar innehållade orden Amino Acid Sequence.
11. Myxine insulin : amino-acid sequence, three dimensional structure, biosynthesis, release, physiological role, receptor binding affinity, and biological activity
Sammanfattning : The Atlantic hagfish, Myxlne. glutinosa,is the most primitive vertebrate extant, and it diverged from the main vertebrate evolutionary chain some 500 mi 11 ion years ago. LÄS MER
12. Regulation of protein degradation by virus derived repeated amino acid sequences
Sammanfattning : The ubiquitin-proteasome pathway plays a central role in the controlled degradation of short-lived and regulatory proteins important m a variety of cellular processes, including antigen presentation and combating viral infections. The presentation of antigenic peptides derived from ubiquitin-proteasome dependent degradation of vital proteins to MHC class I restricted cytotoxic T cells is a central component of antiviral responses. LÄS MER
13. Characterization of protein families, sequence patterns, and functional annotations in large data sets
Sammanfattning : Bioinformatics involves storing, analyzing and making predictions on massive amounts of protein and nucleotide sequence data. The thesis consists of six papers and is focused on proteins. LÄS MER
14. The effect of sequence truncation and amino-acid substitutions on the biophysical properties of protein S and calbindin D9k
Sammanfattning : Protein S is a modular protein and a cofactor in the protein C anticoagulant system. It consists of a Gla-module, a thrombin-sensitive loop, four EGF-modules and a SHBG-like module. LÄS MER
15. 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