Gaois

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2 results

  1. SCIENCE|natural and applied sciences|life sciences|biology|microorganism

    #685675

    IATE #3590686
    víreas ARN aonsnáithe chialldeimhnigh Reference Téarmeolaithe COM-GA
    ga
    víreas RNA aonsnáithe cialldheimhní Reference "Faofa ag an gCoiste Téarmaíochta, www.tearma.ie ;Faomhadh an téarma seo mar chuid de Thionscadal Lex"
    ga
    positive-strand RNA virus | positive-sense single-stranded RNA virus | (+)ssRNA
    en
    Definition virus whose genome consists of a single-strand of RNA with polarity similar to mRNA and thus can be immediately translated by the host cell Reference "COM-Terminology Coordination, based on:Lumen. 'Positive-Strand RNA Viruses in Animals' (17.8.2020)"
    Comment Single stranded RNA viruses can be classified according to the sense or polarity of their RNA into negative-sense and positive-sense, or ambisense RNA viruses. Positive-sense viral RNA is similar to mRNA and thus can be immediately translated by the host cell. Negative-sense viral RNA is complementary to mRNA and thus must be converted to positive-sense RNA by an RNA polymerase before translation. As such, purified RNA of a positive-sense virus can directly cause infection though it may be less infectious than the whole virus particle. Purified RNA of a negative-sense virus is not infectious by itself as it needs to be transcribed into positive-sense RNA; each virion can be transcribed to several positive-sense RNAs. Ambisense RNA viruses resemble negative-sense RNA viruses, except they also translate genes from the positive strand.
  2. SCIENCE|natural and applied sciences|life sciences|biology|microorganism

    #685605

    IATE #3589887
    víreas ARN aonsnáithe chialldiúltaigh Reference Téarmeolaithe COM-GA
    ga
    víreas RNA aonsnáithe cialldhiúltaí Reference "Faofa ag an gCoiste Téarmaíochta, www.tearma.ie ;Faomhadh an téarma seo mar chuid de Thionscadal Lex"
    ga
    negative-sense single-stranded RNA virus | negative-stranded RNA virus | (-)ssRNA virus | antisense-strand RNA virus | negative-strand RNA virus
    en
    Definition virus that uses negative sense, single-stranded RNA as its genetic material Reference "Wikipedia > Negative-sense single-stranded RNA virus (28.5.2020)"
    Comment "The genome of an RNA virus can be said to be either positive-sense, also known as a ""plus-strand"", or negative-sense, also known as a ""minus-strand"". In most cases, the terms ""sense"" and ""strand"" are used interchangeably, making terms such as ""positive-strand"" equivalent to ""positive-sense"", and ""plus-strand"" equivalent to ""plus-sense"". Whether a viral genome is positive-sense or negative-sense can be used as a basis for classifying viruses.Negative-sense (3′-to-5′) viral RNA is complementary to the viral mRNA, thus a positive-sense RNA must be produced by an RNA-dependent RNA polymerase from it prior to translation. Like DNA, negative-sense RNA has a nucleotide sequence complementary to the mRNA that it encodes; also like DNA, this RNA cannot be translated into protein directly. Instead, it must first be transcribed into a positive-sense RNA that acts as an mRNA. Some viruses (e.g. influenza viruses) have negative-sense genomes and so must carry an RNA polymerase inside the virion."