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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 ...
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.
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 ...
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 ...
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]
Coronavirus 5′ UTR. Coronavirus genomes are positive-sense single-stranded RNA molecules with an untranslated region (UTR) at the 5′ end which is called the 5′ UTR. The 5′ UTR is responsible for important biological functions, such as viral replication, transcription [1] and packaging. [2] The 5′ UTR has a conserved RNA secondary ...
Adenylate-uridylate-rich elements ( AU-rich elements; AREs) are found in the 3' untranslated region (UTR) of many messenger RNAs ( mRNAs) that code for proto- oncogenes, nuclear transcription factors, and cytokines. AREs are one of the most common determinants of RNA stability in mammalian cells. [1] The function of AREs was originally ...
Intron. An intron is any nucleotide sequence within a gene that is not expressed or operative in the final RNA product. The word intron is derived from the term intr agenic regi on, i.e., a region inside a gene. [ 1] The term intron refers to both the DNA sequence within a gene and the corresponding RNA sequence in RNA transcripts. [ 2]