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Although they are called untranslated regions, and do not form the protein-coding region of the gene, uORFs located within the 5' UTR can be translated into peptides. [1] The 5' UTR is upstream from the coding sequence. Within the 5' UTR is a sequence that is recognized by the ribosome which allows the ribosome to bind and initiate translation.
Scientists use a number of methods to study the complex structures and functions of the 3′ UTR. Even if a given 3′-UTR in an mRNA is shown to be present in a tissue, the effects of localization, functional half-life, translational efficiency, and trans-acting elements must be determined to understand the 3′-UTR's full functionality. [7]
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 , prokaryotes and eukaryotes .
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]
The 3′-untranslated region (3′-UTR) is a region of the DNA which is transcribed into mRNA and becomes the 3′-end of the message, but which does not contain protein coding sequence. Everything between the stop codon and the polyA tail is considered to be 3′-untranslated.
The phone number may not be in the right format. Take a look at the numbers your last several (non-friend) texts have come from. A lot of the ones from businesses will show a 5- or 6-digit "short ...
The Atlas of UTR Regulatory Activity (AURA), [1] a biological database, now at its second version, [2] is a manually curated and comprehensive catalog of human 5' and 3' untranslated sequences (UTR) and UTR regulatory annotations. It includes basic annotation, phylogenetic conservation, binding sites for RNA-binding proteins and miRNA, cis ...
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