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  2. Universal Tennis Rating - Wikipedia

    en.wikipedia.org/wiki/Universal_Tennis_Rating

    Universal Tennis Rating (UTR) is an index that intends to generate a reliable and accurate rating for players' tennis skill. UTR rates all players—men, women, and children—on a single 16-point scale (with two decimal places, e.g., 11.29) that works for players globally regardless of their skill level, from beginners to top professional competitors.

  3. Untranslated region - Wikipedia

    en.wikipedia.org/wiki/Untranslated_region

    In molecular genetics, an untranslated region (or UTR) refers to either of two sections, one on each side of a coding sequence on a strand of mRNA. If it is found on the 5' side, it is called the 5' UTR (or leader sequence), or if it is found on the 3' side, it is called the 3' UTR (or trailer sequence). mRNA is RNA that carries information ...

  4. Three prime untranslated region - Wikipedia

    en.wikipedia.org/wiki/Three_prime_untranslated...

    In molecular genetics, the three prime untranslated region (3′-UTR) is the section of messenger RNA (mRNA) that immediately follows the translation termination codon. The 3′-UTR often contains regulatory regions that post-transcriptionally influence gene expression. During gene expression, an mRNA molecule is transcribed from the DNA ...

  5. Five prime untranslated region - Wikipedia

    en.wikipedia.org/wiki/Five_prime_untranslated_region

    Five prime untranslated region. The 5′ untranslated region (also known as 5′ UTR, leader sequence, transcript leader, or leader RNA) is the region of a messenger RNA (mRNA) that is directly upstream from the initiation codon. This region is important for the regulation of translation of a transcript by differing mechanisms in viruses ...

  6. Exon - Wikipedia

    en.wikipedia.org/wiki/Exon

    In protein-coding genes, the exons include both the protein-coding sequence and the 5′- and 3′-untranslated regions (UTR). Often the first exon includes both the 5′-UTR and the first part of the coding sequence, but exons containing only regions of 5′-UTR or (more rarely) 3′-UTR occur in some genes, i.e. the UTRs may contain introns. [11]

  7. Regulation of gene expression - Wikipedia

    en.wikipedia.org/wiki/Regulation_of_gene_expression

    Up-regulation is a process which occurs within a cell triggered by a signal (originating internal or external to the cell), which results in increased expression of one or more genes and as a result the proteins encoded by those genes. Conversely, down-regulation is a process resulting in decreased gene and corresponding protein expression.

  8. microRNA - Wikipedia

    en.wikipedia.org/wiki/MicroRNA

    microRNA. Pre-miRNA instead of Pri-miRNA in the first point of mechanism. Diagram of microRNA (miRNA) action with mRNA. Examples of miRNA stem-loops, with the mature miRNAs shown in red. MicroRNA (miRNA) are small, single-stranded, non-coding RNA molecules containing 21 to 23 nucleotides. [1] Found in plants, animals and some viruses, miRNAs ...

  9. Directionality (molecular biology) - Wikipedia

    en.wikipedia.org/wiki/Directionality_(molecular...

    Directionality (molecular biology) A furanose (sugar-ring) molecule with carbon atoms labeled using standard notation. The 5′ is upstream; the 3′ is downstream. DNA and RNA are synthesized in the 5′-to-3′ direction. Directionality, in molecular biology and biochemistry, is the end-to-end chemical orientation of a single strand of ...