enow.com Web Search

Search results

  1. Results from the WOW.Com Content Network
  2. RNA world - Wikipedia

    en.wikipedia.org/wiki/RNA_world

    This model for the early sexual cycle is hypothetical, but it is very similar to the known sexual behavior of the segmented RNA viruses, which are among the simplest organisms known. Influenza virus , whose genome consists of 8 physically separated single-stranded RNA segments, [ 96 ] is an example of this type of virus.

  3. Double-stranded RNA - Wikipedia

    en.wikipedia.org/wiki/Double-stranded_RNA

    Watson and Crick had noted early on that the 2′ hydroxyl group on each RNA nucleotide would prevent RNA from forming a double helix similar to the one they had described for DNA. [6] In 1995, Alexander Rich and David R. Davies propose the double helix structure of RNA for the first time. [7]

  4. RNA virus - Wikipedia

    en.wikipedia.org/wiki/RNA_virus

    An RNA virus is a virus characterized by a ribonucleic acid based genome. [1] The genome can be single-stranded RNA or double-stranded (dsRNA). [2] Notable ...

  5. Orthornavirae - Wikipedia

    en.wikipedia.org/wiki/Orthornavirae

    Genome type and replication cycle of different RNA viruses. RNA viruses in Orthornavirae typically do not encode many proteins, but most positive-sense, single-stranded (+ssRNA) viruses and some double-stranded RNA (dsRNA) viruses encode a major capsid protein that has a single jelly roll fold, so named because the folded structure of the protein contains a structure that resembles a jelly ...

  6. Positive-strand RNA virus - Wikipedia

    en.wikipedia.org/wiki/Positive-strand_RNA_virus

    Positive-strand RNA virus genomes usually contain relatively few genes, usually between three and ten, including an RNA-dependent RNA polymerase. [4] Coronaviruses have the largest known RNA genomes, between 27 and 32 kilobases in length, and likely possess replication proofreading mechanisms in the form of an exoribonuclease within nonstructural protein nsp14.

  7. Riboviria - Wikipedia

    en.wikipedia.org/wiki/Riboviria

    Phylogeny of Orthornavirae RNA-dependent polymerase. The five colored branches are the five phyla of Orthornavirae.. Both kingdoms in Riboviria show a relation to the reverse transcriptases of group II introns that encode RTs and retrotransposons, which are self-replicating DNA sequences, the latter of which self-replicate via reverse transcription and integrate themselves into other parts of ...

  8. Viral evolution - Wikipedia

    en.wikipedia.org/wiki/Viral_evolution

    Viral evolution is a subfield of evolutionary biology and virology that is specifically concerned with the evolution of viruses. [1] [2] Viruses have short generation times, and many—in particular RNA viruses—have relatively high mutation rates (on the order of one point mutation or more per genome per round of replication).

  9. Virgaviridae - Wikipedia

    en.wikipedia.org/wiki/Virgaviridae

    Replication follows the positive stranded RNA virus replication model. Positive stranded RNA virus transcription is the method of transcription. Translation takes place by leaky scanning, and suppression of termination. The virus exits the host cell by tripartite non-tubule guided viral movement, and monopartite non-tubule guided viral movement.