Tag Archives: RNA

RNA Bacteriophage Diversity

Viruses that infect bacteria are among the most abundant life forms on Earth. Oceans and soils, and potentially even our bodies, would be overrun with bacteria were it not for bacteriophages. A new study suggests that bacteriophages with RNA genomes … Continue reading

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Polintons and network-like evolution of the virus world

Polintons were the first group of eukaryotic double-stranded DNA viruses to evolve from bacteriophages and gave rise to most large DNA viruses and various other selfish genetic elements. Continue reading

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Viroids: Survivors from the RNA World?

A new review in Annual Review of Microbiology gives an excellent introduction to viroids. Continue reading

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Influenza Viruses and mRNA Splicing: Doing More with Less

During their replication in the nucleus of infected cells, influenza viruses hijack the host splicing machinery to process some of their RNA segments, the M and NS segments. This review provides an overview of the current knowledge gathered on this … Continue reading

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Over at Principles of Molecular Virology: RNAi – miRNA – siRNA – do you know the difference?

The Great RNA Confusion: RNAi – miRNA – siRNA – do you know the difference? Continue reading

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Tricks an IRES uses to enslave ribosomes

In eukaryotes, mRNAs are primarily translated through a cap-dependent mechanism whereby initiation factors recruit the 40S ribosomal subunit to a cap structure at the 5′ end of the mRNA. However, some viral and cellular messages initiate protein synthesis without a … Continue reading

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Self-amplifying RNA vaccines

Vaccines are a triumph of medicine and science – but is the pipeline running dry? What about all those viruses we have not been able to make effective vaccines against – HIV, RSV, Ebola, etc? DNA vaccines have generally proved … Continue reading

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Inhibition and avoidance of mRNA degradation by RNA viruses

The cellular mRNA decay machinery plays a major role in regulating the quality and quantity of gene expression in cells. This machinery involves multiple enzymes and pathways that converge to promote the exonucleolytic decay of mRNAs. The transcripts made by … Continue reading

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Rates of Virus Evolution Are Linked to Host Geography in Bats

Rapid evolution of RNA viruses is intimately linked to their success in overcoming the defenses of their hosts. Several studies have shown that rates of viral evolution can vary dramatically among distantly related viral families. Variability in the speed of … Continue reading

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