Sökning: "protein transport"

Visar resultat 21 - 25 av 636 avhandlingar innehållade orden protein transport.

1. 21. Water and Protein Dynamics in Biological Systems Studied by Magnetic Relaxation Dispersion

   Författare :Erik Persson Sunde; Biofysikalisk kemi; []
   Nyckelord :protein dynamics; ubiquitin; BPTI; Escherichia coli; Haloarcula marismortui; nuclear magnetic resonance; protein hydration; magnetic relaxation dispersion; water dynamics; cell water;

   Sammanfattning : The results presented in this thesis demonstrate that the magnetic relaxation dispersion (MRD) technique can provide information of relevance to protein biophysics, magnetic resonance imaging and cell biology. By immobilizing proteins with covalent cross-links, intermittent protein dynamics on the previously inaccessible ns-µs time scale could be probed with MRD via the exchange of water molecules between internal cavities and the surrounding bulk solvent phase. LÄS MER

3. 22. Into the Membrane and Beyond : Improving Membrane Protein Over-Expression in Escherichia coli

   Författare :Mirjam Klepsch; Jan-Willem de Gier; Reinhard Grisshammer; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Escherichia coli; membrane protein over-expression; proteomics; T7 RNA polymerase; peptide transport; strain engineering; Biochemistry; Biokemi; Biophysical chemistry; Biofysikalisk kemi; biokemi; Biochemistry;

   Sammanfattning : Membrane proteins fulfil a wide variety of essential functions in the cell and many are (potential) drug targets. Since their natural abundance is usually very low, most membrane proteins have to be over-expressed for functional and structural studies. LÄS MER

4. 23. Structural Studies of Binding Proteins: Investigations of Flexibility, Specificity and Stability

   Författare :Ulrika Magnusson; Sherry L. Mowbray; Anthony J. Wikinson; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Molecular biology; Periplasmic binding protein; X-ray crystallography; conformational change; acidophile; protein specificity; protein structure; Molekylärbiologi; Molecular biology; Molekylärbiologi;

   Sammanfattning : Binding proteins are present both in gram-negative and gram-positive bacteria. They are the recognition components of the ABC transport systems that transport different nutrients into the cell, and are in some cases also involved in chemotaxis. LÄS MER

5. 24. Amyloid Beta – Biotherapy Target and Biotechnological Tool

   Författare :Sebastian W. Meister; Stefan Ståhl; John Löfblom; Maarten Merkx; KTH; []
   Nyckelord :Alzheimer’s disease; amyloid beta; blood-brain barrier; green-fluorescent protein; intracellular assays; proteases; protease substrate specificity; protein aggregation; protein engineering.; Bioteknologi; Biotechnology;

   Sammanfattning : Alzheimer’s disease is a progressive neurodegenerative disease characterized primarily by memory impairment and cognitive decline. As of 2020, an estimated 50 million people suffer from Alzheimer’s disease or related dementia and no disease-modifying treatment options are yet approved for clinical practice. LÄS MER

7. 25. Viperin vs. tick-borne encephalitis virus : mechanism of a potent antiviral protein

   Författare :Kirstin Vonderstein; Anna Överby Wernstedt; Magnus Evander; Sonja Best; Umeå universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Tick-borne encephalitis virus; TBEV; type-I interferon; IFN; Interferon-stimulated gene; ISG; viperin; GBF1; CIAO1; antiviral protein; genome replication; particle release; capsid;

   Sammanfattning : Tick-borne encephalitis virus (TBEV) is a very important virus medically, causing mild or severe encephalitis often with long-lasting sequelae. Treatment of tick-borne encephalitis is limited to supportive care, and antiviral drugs are much needed.The type-I interferon (IFN) system is the first line of host defense against many viruses. LÄS MER