Harman Patil (Editor)

2' O methylation

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2'-O-methylation

2'-O-methylation is a common nucleoside modification of RNA, where a methyl group is added to the 2' hydroxyl of the ribose moiety of a nucleoside, producing a methoxy group. 2'-O-methylated nucleosides are mostly found in ribosomal RNA and small nuclear RNA and occur in the functionally essential regions of the ribosome and splicesome. Currently, about 1210 2'-O-methylations (2'-O-Me) have been identified in mammals and yeast and deposited in RMBase database.

Having the chemical properties intermediate between RNA and DNA, 2'-O-methylation is presumed to have one of the reactive group of RNA molecules on early earth that would have given rise to DNA 1.

Recently a novel method to map 2'-O ribose methylations by high throughput sequencing has been published. The method is quantitative and maps all modifications in a single experiment.

References

2'-O-methylation Wikipedia


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