MRNAs biotinylated within the 5' cap and protected against decapping: new tools to capture RNA-protein complexes.

ABSTRACT: The 5'-terminus of eukaryotic mRNAs comprises a 7-methylguanosine cap linked to the first transcribed nucleotide via a 5'-5' triphosphate bond. This cap structure facilitates numerous interactions with molecules participating in mRNA processing, turnover and RNA translation. Here, we report the synthesis and biochemical properties of a set of biotin-labelled cap analogues modified within the triphosphate bridge and increasing mRNA stability while retaining biological activity. Successful co-transcriptional incorporation of the cap analogues allowed for the quantification of cap-dependent translation efficiency, capping efficiency and the susceptibility to decapping by Dcp2. The utility of such cap-biotinylated RNAs as molecular tool was demonstrated by ultraviolet-cross-linking and affinit

SUBMITTER: Bednarek S 

PROVIDER: S-EPMC6232584 | biostudies-literature | 2018 Nov

REPOSITORIES: biostudies-literature