Sökning: "prokaryotic"

Visar resultat 21 - 25 av 86 avhandlingar innehållade ordet prokaryotic.

1. 21. To defend or to offend? : Bacterial defence and competition systems

   Författare :Danna Lee; Sanna Koskiniemi; Marjan van der Woude; Uppsala universitet; []
   Nyckelord :bacterial defence systems; bacterial competition systems; toxin-antitoxin systems; colicin; contact-dependent growth inhibition CDI ; type VI secretion system T6SS ; Rearrangement hotspot Rhs proteins; CRISPR; horizontal gene transfer; antibiotic resistance; Salmonella; Enterotoxigenic E. coli ETEC ; probiotics; synthetic biology.;

   Sammanfattning : Bacteria are prokaryotic microorganisms that can be found in all niches of the biosphere. Bacteria must constantly evolve in order to survive and adapt to their environments. Defence systems and competition systems play a vital role in ensuring the survival of bacteria. LÄS MER

3. 22. Membrane protein topology : prediction, experimental mapping and genome-wide analysis

   Författare :Johan Nilsson; Karolinska Institutet; Karolinska Institutet; []
   Nyckelord :;

   Sammanfattning : Membrane proteins constitute a large and important class of proteins. They are responsible for many crucial processes in living cells, and about 25% of all proteins encoded by a typical genome are predicted to be membrane proteins. Despite their importance, very few structures have been determined at atomic resolution. LÄS MER

4. 23. Structural Studies of Bacteriophage PRR1 and HIV-1 protease

   Författare :Magnus Persson; Lars Liljas; Kaspars Tars; Félix Rey; Uppsala universitet; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; PRR1; HIV; Structural Biology; X-ray crystallography; PRR1; HIV-1 protease; NCS; crystallography; inhibitor; virus; bacteriophage; X-ray crystallography; Virology; Virologi; Molecular biology; Molekylärbiologi;

   Sammanfattning : Viruses are a diverse genera of organisms adapted to thrive in many different hosts from prokaryotic to eukaryotic.We present here the structure of bacteriophage PRR1 virus-like particle (VLP), belonging to Leviviridae family. Our structure reveals calcium ions in the VLP. LÄS MER

5. 24. Functional studies of E. coli ribosomes and characterization of mini open reading frames

   Författare :Vildan Dincbas; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Cell and molecular biology; Cell- och molekylärbiologi; Cell and molecular biology; Cell- och molekylärbiologi; molekylärbiologi; Molecular Biology;

   Sammanfattning : In this thesis, problems concerning the elongation, termination and recycling steps of prokaryotic translation have been addressed.An explanation is given for growth inhibition due to minigene expression.Minigene transcripts containing very short open reading frames inhibit proteinsynthesis in E. LÄS MER

7. 25. Expression of Ig genes. Regulation of transcription and production of human antibodies

   Författare :Christina Furebring; Institutionen för immunteknologi; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Immunology; Bioteknik; Biotechnology; human antibodies; immunoglobulin gene expression; 3 enhancer; serology; transplantation; Immunologi; serologi;

   Sammanfattning : During B lymphocyte development, the transcriptional activity of the IgH locus is subject to spatial and temporal changes. The 3' enhancer (3'E) has been suggested to play an important role in regulation of immunoglobulin gene expression late in B cell development. LÄS MER