Sökning: "mikrobiologi uppsala universitet"

Visar resultat 11 - 15 av 365 avhandlingar innehållade orden mikrobiologi uppsala universitet.

  1. 11. Control of Chromosome and Plasmid Replication in Escherichia coli

    Författare :Jan Olsson; Kurt Nordström; Santanu Dasgupta; Måns Ehrenberg; Anders Lobner-Olesen; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Microbiology; Mikrobiologi; Microbiology; Mikrobiologi; mikrobiologi; Microbiology;

    Sammanfattning : Life is cellular. Cells grow and divide to give two new cells; this process is called the cell cycle. The chromosome in a bacterium is replicated into two identical copies before the cell divides. DNA replication is a fundamental process common to all forms of life. LÄS MER

  3. 12. CopA and CopT: The Perfect RNA Couple

    Författare :Jacoba G. Slagter-Jäger; Gerhart Wagner; Wolfgang Nellen; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Microbiology; antisense RNA; plasmid; U-turn; four-way junction; RNA-RNA interaction; Hfq; Mikrobiologi; Microbiology; Mikrobiologi; mikrobiologi; Microbiology;

    Sammanfattning : Antisense RNAs regulate gene expression in many bacterial systems. The best characterized examples are from prokaryotic accessory elements such as phages, plasmids and transposons. Many of these antisense RNAs have been identified as plasmid copy number regulators where they regulate the replication frequency of the plasmid by negative feedback. LÄS MER

  4. 13. A small amoeba at the crossroads of the big RNAi world : MicroRNA biogenesis and Argonaute function in Dictyostelium discoideum

    Författare :Zhen Liao; Fredrik Söderbom; Gerhart E. H. Wagner; Christina Dixelius; Kriton Kalantidis; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; RNAi; microRNA; Argonaute protein; miRNA biogenesis; Dictyostelium discoideum; social amoeba; Dicer; development; growth; Biology with specialization in Molecular Cell Biology; Biologi med inriktning mot molekylär cellbiologi;

    Sammanfattning : Small non-coding RNA (ncRNA) mediated gene silencing, known as RNAi, is a key regulatory mechanism of gene expression in eukaryotes. MicroRNAs (miRNA), one major type of small ncRNAs, are about 21nt long and bound by Argonaute proteins. LÄS MER

  5. 14. Ribosome standby sites and other structural aspects of translation initiation regions in Escherichia coli

    Författare :Maaike M. Sterk; Gerhart E. H. Wagner; Fredrik Söderbom; Isabella Moll; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Ribosome standby sites; translation initiation; mRNA structure; bacteria;

    Sammanfattning : Translation initiation, which is rate-limiting in protein synthesis, is often the step at which regulation occurs. Here, we investigated several mechanisms of translation initiation in Escherichia coli, including their control. LÄS MER

  7. 15. Systemic RNAi Relies on the Endomembrane System in Caenorhabditis elegans

    Författare :Yani Zhao; Andrea Hinas; Staffan Svärd; Simon Tuck; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Systemic RNAi; RNAi inheritance; late endosomes MVBs; SID-5; SEC-22; SYX-6; C12D8.1; Biology with specialization in Molecular Biology; Biologi med inriktning mot molekylärbiologi;

    Sammanfattning : The membrane system of a eukaryotic cell is a large and complex system handling the transport, exchange and degradation of many kinds of material. Recent research shows that double-stranded RNA (dsRNA) mediated gene silencing (RNA interference) is a membrane related process. LÄS MER