RNA viruses

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Related to RNA viruses: Dna viruses

RNA viruses,

n See viruses.


ribonucleic acid.

RNA interference (RNAi)
the functional inactivation of specific genes by experimental introduction of a corresponding double stranded RNA, which induces degradation of the complementary single-stranded mRNA encoded by the gene but not that of mRNAs with different sequences. See microRNA and gene silencing.
microRNA (miRNA)
small RNAs containing 21 to 33 nucleotides that associated with multiple proteins in a RNA-induced silencing complex (RISC) that repress transcription of specific target mRNA by hybridizing to its 3' untranslated region.
RNA primer
a sequence of about 10 nucleotides long copied from DNA by RNA primase and required for the priming of the synthesis of each Okazaki fragment during DNA replication.
secondary structure RNA
folding of single-stranded RNA molecules which arises from intramolecular base pairing.
small cytoplasmic RNA (scRNA)
small (7S; 129 nucleotides) RNA molecules found in the cytosol and rough endoplasmic reticulum associated with proteins that are involved in specific selection and transport of other proteins.
small nuclear RNA (snRNA)
a general term for many diferent kinds of small RNA molecules found in the nucleus of a cell that include as examples species involved in splicing of introns from mRNA and in RNA interference.
RNA viruses
viruses distinguished by having a ribonucleic acid genome, usually as a single strand which may be positive or negative sense, a single molecule or a segmented; in at least two families the genome is a double-strand segmented form.
References in periodicals archive ?
The UCI and Dutch researchers examined one group of RNA viruses, called picornaviruses, using biochemical purification methods and confocal microscopy to see how they co-opt the functions of a cellular DNA repair enzyme called TDP2 to advance their replication process.
To unravel the mystery of motif D's function, Boehr and his colleagues studied a strain of the poliovirus-an RNA virus that is similar to many other RNA viruses that affect humans.
In preliminary studies that used referential RNA viruses, we attempted to determine the nucleic acid sequences of SARS coronavirus, mouse hepatitis virus, West Nile virus, Japanese encephalitis virus, and dengue virus type 2 in culture supernatants (10-100 [micro]L) by using the RDV method.
Schrag agrees that RNA viruses are a serious threat.
Nasdaq: ARQL) and ViroPharma Incorporated (Nasdaq: VPHM) today announced a collaboration for the discovery and development of novel therapeutics for the treatment of diseases caused by RNA viruses.
have been reported to be infected by a variety of different RNA viruses, such as Chandipura (10), Saboya (11), Tete, and 2 unclassified viruses (ArD 95737 and ArD 111740).
The enzymes, 2',5'-oligoadenylate synthetase and ribonuclease L, target RNA viruses (SN: 6/15/96, p.
Evolutionary aspects of recombination in RNA viruses.
Diseases caused by RNA viruses are wide-ranging and include influenza, hepatitis C, viral meningitis, enterovirus summer flu, and the common cold, plus emerging diseases, such as those caused by hanta virus, Ebola, and dengue virus.
Coronaviruses are large, enveloped, positive-stranded RNA viruses (1).
This funding will enable us to advance our research programs for developing drugs that act on RNA viruses.
Type 1 interferon induction pathway, but not released interferon, participates in the maturation of dendritic cells induced by negative-strand RNA viruses.