bioinformatics analysis of the Cfr/RlmN family establishes their significant evolutionary link with radical-S-adenosyl-L-methionine enzymes. The RlmN subfamily is likely the ancestral form, whereas the Cfr subfamily arose via duplication and horizontal gene transfer
Cfr confers a phenotype with resistance to phenicols, lincosamides, oxazolidinones, pleuromutilins, and streptogramin A antibiotics. The RlmN knock out strain JW2501-1 is less sensitive to the antibiotics than standard laboratory strain HB101