post-transcriptional RNA processing

post-transcriptional RNA processing

a series of enzymatic reactions that convert the primary transcript to a mature functional molecule. Processing includes: base modification, sugar modification, pyrimidine ring rearrangements, formation of helices and tertiary conformations, additions to the 5′- and 3′-termini, specific exonucleolytic and endonucleolytic cleavages, complex cleavages with splicing and the formation of RNA-protein complexes. The number, type and order of the processing events varies with the RNA species.
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