23S rRNA (adenine<sup>2503</sup>-C<sup>2</sup>)-methyltransferase (, RlmN, YfgB, Cfr) is an enzyme with systematic name S-adenosyl-L-methionine:23S rRNA (adenine<sup>2503</sup>-C<sup>2</sup>)-methyltransferase. This enzyme catalyses the following chemical reaction
23S rRNA (adenine<sup>2503</sup>-C<sup>2</sup>)-methyltransferase contains an [4Fe-4S] cluster.