Sökning: "RNA viruses"

Visar resultat 1 - 5 av 144 avhandlingar innehållade orden RNA viruses.

1. 1. Structural Decorations in Viruses : Unraveling Acquired Functional Structures in Icosahedral RNA Virus Capsids

   Författare :Han Wang; Kenta Okamoto; Sarah Butcher; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Viruses; RNA viruses; capsid; structure; cryo-EM; Molekylär biovetenskap; Molecular Life Sciences;

   Sammanfattning : Viruses have a profound impact worldwide, posing challenges to animal welfare, agriculture, human health, and the ecosystem. This thesis examines the realm of non-enveloped icosahedral double-stranded (ds)RNA and single-stranded (ss)RNA viruses through three studies. LÄS MER

3. 2. Targeting Infectious Disease : Structural and functional studies of proteins from two RNA viruses and Mycobacterium tuberculosis

   Författare :Anna M. Jansson; T. Alwyn Jones; Sherry L. Mowbray; E. Yvonne Jones; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; RNA virus; coronavirus; alphacoronavirus; nsp1; TGEV; flavivirus; Modoc virus; NS5; methyltransferase; mRNA capping; Mycobacterium tuberculosis; tuberculosis; 1-deoxy-D-xylulose 5-phosphate reductoisomerase; DXR; fosmidomycin analogues; MEP pathway; drug development; xray-crystallography; Biology with specialization in Structural Biology; Biologi med inriktning mot strukturbiologi; Biology with specialization in Molecular Biology; Biologi med inriktning mot molekylärbiologi; Biokemi; Biochemistry; Medicinal Chemistry; Läkemedelskemi;

   Sammanfattning : The recent emergence of a number of new viral diseases as well as the re-emergence of tuberculosis (TB), indicate an urgent need for new drugs against viral and bacterial infections.Coronavirus nsp1 has been shown to induce suppression of host gene expression and interfere with host immune response. LÄS MER

4. 3. Detection and Quantification of Variable Viral RNA by Real-Time PCR Assays

   Författare :Shaman Muradrasoli; Jonas Blomberg; Göran Friman; Maria Brytting; Uppsala universitet; []
   Nyckelord :Virology; Diagnosis of Viral RNA; QPCR; RNA virus; broadly targeted PCR; probe design strategy; Infectious diseases; Medicin; Medicine;

   Sammanfattning : As the area of nucleic acid based technologies develops, so will our understanding of how structural variations in DNA and RNA pathogens are associated with disease. The overall goal of this thesis is the development of broadly targeted measurement techniques for variable viral RNA by Real-Time PCR (here referred to as quantitative reverse transcriptase PCR, QRT-PCR). LÄS MER

5. 4. Structure of small RNA phages

   Författare :Kaspars Tars; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Developmental biology; bacteriophage; MS2; virus assembly; structural evolution; Utvecklingsbiologi; Developmental biology; Utvecklingsbiologi; molekylärbiologi; Molecular Biology;

   Sammanfattning : Small RNA phages belonging to the family Leviviridae are among the simplest known viruses. They have been used extensively as models for studies of various problems in molecular biology, including protein-RNA interactions, repression of translation, virus assembly and virus evolution. LÄS MER

7. 5. Control of Quasi-Equivalence in Virus Capsids

   Författare :Charlotte Helgstrand; B. V. Venkataram Prasad; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Cell and molecular biology; crystallography; bacteriophage; virus; RNA; capsid; quasi-equivalence; assembly; Cell- och molekylärbiologi; Cell and molecular biology; Cell- och molekylärbiologi; Molecular Biotechnology; Molekylär bioteknik;

   Sammanfattning : Many T=3 plant and insect viruses use a molecular switch in form of order/disorder of a segment of the polypeptide chain to regulate the quasi-equivalent contacts. The structure of a mutant of the T=3 capsid of bacteriophage fr confirms that this virus and other members of the Leviviridae family lack a switch mechanism. LÄS MER