This family includes erythromycin esterase enzymes [1,2] that confer resistance to the erythromycin antibiotic.

1: Nucleotide sequence of the gene ereA encoding the erythromycin esterase in Escherichia coli. Ounissi H, Courvalin P; Gene 1985;35:271-278. PMID:3899861

2: Analysis of the nucleotide sequence of the ereB gene encoding the erythromycin esterase type II. Arthur M, Autissier D, Courvalin P; Nucleic Acids Res 1986;14:4987-4999. PMID:3523438