Abstract:In contrast to bacteria, eukaryotic cellular cytoplasmic (except for organellar) mRNAs are blocked at their 5′ ends by a unique structure – the m
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GpppN cap, where N is any nucleotide and m is a methyl group. The cap is an essential mRNA feature as it is critical to several steps of gene expression. Its role in translation and mRNA stability is particularly well studied. Interest in the cap has recently surged given the development of mRNA‐based vaccines and mRNA therapeutics.
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