= RNA-directed DNA methylation
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= RdDM
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<RNA-directed DNA methylation>, or <RdDM>, is a <plant> regulatory pathway in which small <RNAs> guide methylation of homologous <DNA>. Canonical components include <Pol IV>, <RDR2>, <DCL3> and <Pol V>, connecting production of small <RNAs> with recognition of target <chromatin>.
Noncoding <transcription> can supply scaffold transcripts at the target, rather than serving only to produce a <protein>. Experiments on specialized polymerases showed how this transcriptional activity participates in silencing adjacent or overlapping regions.<Pol IVb and Pol V noncoding-transcription study by Andrzej T. Wierzbicki and others>[2008, abstract and silencing mechanism]{ref}
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