RNA interference — (RNAi) is a mechanism that inhibits gene expression at the stage of translation or by hindering the transcription of specific genes. RNAi targets include RNA from viruses and transposons (significant for some forms of innate immune response), and … Wikipedia

RNA interference — n a posttranscriptional genetic mechanism of various eukaryotes (as plants, fungi, nematodes, and mammals) which suppresses gene expression and in which double stranded RNA cleaved into small fragments initiates the degradation of a complementary … Medical dictionary

RNA-induced transcriptional silencing — (RITS) is a form of RNA interference by which short RNA molecules such as small interfering RNA (siRNA) trigger the downregulation of transcription of a particular gene or genomic region. This is usually accomplished by posttranslational… … Wikipedia

RNA-dependent RNA polymerase — (RDRP), or RNA replicase, is an enzyme that catalyzes the replication of RNA from an RNA template. This is in contrast to a typical RNA polymerase, which catalyzes the transcription of RNA from a DNA template.Viral RDRPs were discovered in the… … Wikipedia

RNA silencing — refers to a family of gene silencing effects by which the expression of one or more genes is downregulated or entirely suppressed by the introduction of an antisense RNA molecule. The most common and well studied example is RNA interference, in… … Wikipedia

RNA — For other uses, see RNA (disambiguation). A hairpin loop from a pre mRNA. Highlighted are the nucleobases (green) and the ribose phosphate backbone (blue). Ribonucleic acid (English pronunciation: /raɪbɵ.njuːˌkleɪ.ɨk ˈæsɪd/), or RNA, is one of… … Wikipedia

RNA-Interferenz — Übergeordnet Gen Silencing Post Transkriptionelles Gen Silencing Gene Ontology … Deutsch Wikipedia

RNA Induced Silencing Complex — Unter RNA Interferenz (RNAi, auch RNA Silencing) versteht man einen natürlichen Mechanismus in eukaryotischen Zellen, der die Genexpression einzelner Gene hemmt. Bei dieser Genregulation ist immer RNA als zielerkennendes Molekül beteiligt. Nach… … Deutsch Wikipedia

RNA silencing — Unter RNA Interferenz (RNAi, auch RNA Silencing) versteht man einen natürlichen Mechanismus in eukaryotischen Zellen, der die Genexpression einzelner Gene hemmt. Bei dieser Genregulation ist immer RNA als zielerkennendes Molekül beteiligt. Nach… … Deutsch Wikipedia

RNA polymerase — RNAP from T. aquaticus pictured during elongation. Portions of the enzyme were made transparent so as to make the path of RNA and DNA more clear. The magnesium ion (yellow) is located at the enzyme active site. RNA polymerase (RNAP or RNApol) is… … Wikipedia

RNA — Die Ribonukleinsäure ist eine Nukleinsäure, das heißt eine Kette aus vielen Nukleotiden (ein so genanntes Polynukleotid). Im internationalen und im wissenschaftlichen Sprachgebrauch wird die Ribonukleinsäure mit der englischen Abkürzung RNA… … Deutsch Wikipedia

RNA-induced silencing complex — (RISC) a complex of proteins and small interfering RNA or microRNA that mediates the degradation of messenger RNA or the blocking of translation in RNA interference … Medical dictionary

RNA polymerase II — (also called RNAP II and Pol II) is an enzyme found in eukaryotic cells. It catalyzes the transcription of DNA to synthesize precursors of mRNA and most snRNA and microRNA. [cite journal | author = Kronberg, R.D. | title = Eukaryotic… … Wikipedia

Interférence ARN — ARN interférent Protéine DICER L expression ARN interférent désigne un acide ribonucléique simple ou double brin, qui interfère avec un ARN messager spécifique conduisant à sa dégradation et à la diminution de sa traduction en protéine. Sommaire … Wikipédia en Français

Small interfering RNA — (siRNA), sometimes known as short interfering RNA or silencing RNA, is a class of 20 25 nucleotide long double stranded RNA molecules that play a variety of roles in biology. Most notably, siRNA is involved in the RNA interference (RNAi) pathway … Wikipedia

Small interfering RNA — Aufbau der siRNA Small interfering RNA (kurz siRNA) sind kurze, einzelsträngige oder doppelsträngige Ribonukleinsäure Moleküle. Sie codieren kein Protein, spielen aber insbesondere im Rahmen der RNA Interferenz in den Zellen von Lebewesen mit… … Deutsch Wikipedia