RDR2 (source code)
= RDR2
{c}
An RNA-dependent <RNA polymerase> contributing to double-stranded precursors for canonical <RdDM> small <RNAs>.
Its RNA-copying activity helps convert a single-stranded <RNA> <substrate> into a double-stranded precursor for later processing. This step differs from copying <DNA> into <RNA>, which is performed by a DNA-dependent polymerase. <Metal A and metal B sites of nuclear RNA polymerases Pol IV and Pol V are required for siRNA-dependent DNA methylation and gene silencing by J. R. Haag and others>[2009, Pol IV/Pol V-dependent siRNA pathway]{ref}
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