Members of this family are radical SAM enzymes that appear to perform a cyclization on an adjacent cognate peptide from family TIGR04079. Genomes with the complete system include Streptococcus thermophilus LMD-9 and Lactococcus lactis subsp. cremoris MG1363, among others. The gene symbol assigned is kwcM, for KxxxW Cyclic peptide Maturase. [Protein fate, Protein modification and repair]
Jiyao W et al.(2023). "The conserved domain database in 2023.",