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  1. Pisuviricota es un filo de virus de ARN establecido por el ICTV para la clasificación viral. Incluye virus de ARN bicatenario como la familia Partitiviridae agrupados en la clase Duplopiviricetes, mientras que los demás son virus ARN monocatenario positivo.

  2. www.wikiwand.com › es › PisuviricotaPisuviricota - Wikiwand

    Pisuviricota es un filo de virus de ARN establecido por el ICTV para la clasificación viral. Incluye virus de ARN bicatenario como la familia Partitiviridae agrupados en la clase Duplopiviricetes, mientras que los demás son virus ARN monocatenario positivo.

  3. en.wikipedia.org › wiki › PisuviricotaPisuviricota - Wikipedia

    Pisuviricota is a phylum of RNA viruses that includes all positive-strand and double-stranded RNA viruses that infect eukaryotes and are not members of the phylum Kitrinoviricota, Lenarviricota or Duplornaviricota.

    • Etymology
    • Characteristics
    • Phylogenetics
    • Classification
    • Disease
    • History
    • Gallery

    The first part of Orthornavirae comes from Greek ὀρθός [orthós], meaning straight, the middle part, rna, refers to RNA, and -viraeis the suffix used for virus kingdoms.

    Structure

    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 roll. Many also possess an envelope, a type of lipidmembrane that typically surrounds the capsid. In particular, the viral envelope is near-universal among negative...

    Genome

    Viruses in Orthornavirae have three different types of genomes: dsRNA, +ssRNA, and -ssRNA. Single-stranded RNA viruses have either a positive or negative sense strand, and dsRNA viruses have both. This structure of the genome is important in terms of transcription to synthesize viral mRNA as well as replication of the genome, both of which are carried out by the viral enzyme RNA-dependent RNA polymerase(RdRp), also called RNA replicase.

    Evolution

    RNA viruses in Orthornavirae experience a high rate of genetic mutations because RdRp is prone to making errors in replication since it typically lacks proofreading mechanisms to repair errors.[note 1] Mutations in RNA viruses are often influenced by host factors such as dsRNA-dependent adenosine deaminases, which edit viral genomes by changing adenosines to inosines. Mutations in genes that are essential for replication lead to a reduced number of progeny, so viral genomes typically contain...

    The exact origin of Orthornavirae is not well established, but the viral RdRp shows a relation to the reverse transcriptase (RT) enzymes of group II introns that encode RTs and retrotransposons, the latter of which are self-replicating DNA sequences that integrate themselves into other parts of the same DNA molecule. A larger study (2022) where new...

    RNA viruses that encode RdRp are assigned to the kingdom Orthornavirae, which contains six official phyla, six unofficial phylaand several taxa that are unassigned to a phylum due to lack of information. The five phyla are separated based on the genome types, host ranges, and genetic similarity of member viruses. 1. Phylum: Duplornaviricota, which ...

    RNA viruses are associated with a wide range of disease, including many of the most widely known viral diseases. Notable disease-causing viruses in Orthornaviraeinclude: Animal viruses in Orthornavirae include orbiviruses, which cause various diseases in ruminants and horses, including Bluetongue virus, African horse sickness virus, Equine encephal...

    Diseases caused by RNA viruses in Orthornavirae have been known throughout much of history, but their cause was only discovered in modern times. As a whole, RNA viruses were discovered during a time period of major advancements in molecular biology, including the discovery of mRNA as the immediate carrier of genetic information for protein synthesi...

    Lassa virus (Arenaviridae)
    Lymphocytic choriomeningitis virus (Arenaviridae)
    Hantavirus (Bunyaviridae)
    Marburg virus (Filoviridae)
  4. Orthornavirae es un reino viral introducido por el Comité Internacional de Taxonomía de Virus para la clasificación de los virus que incluye la mayoría de los virus de ARN exceptuando los virus satélite de ARN los cuales todavía no se han incluido en análisis filogenéticos y se clasifican sin reino. Todos estos virus ...

  5. en.wikipedia.org › wiki › PicornavirusPicornavirus - Wikipedia

    The viruses in this family can cause a range of diseases including the common cold, poliomyelitis, meningitis, hepatitis, and paralysis. [3] [4] [5] [6] Picornaviruses constitute the family Picornaviridae, order Picornavirales, and realm Riboviria. There are 158 species in this family, assigned to 68 genera.

  6. Pisoniviricetes is a class of positive-strand RNA viruses which infect eukaryotes. [1] [2] A characteristic of the group is a conserved 3C - like protease from the PA clan of proteases for processing the translated polyprotein.