aminonucleoside antibiotic A201A A201A is a nucleoside antibiotic. It inhibits translation by binding to the peptidyl transferase center on the large ribosomal subunit. This prevents the binding of aminoacyl-tRNA to the A-site. ChEBI:222171 antibiotic_resistance ChEMBL:CHEMBL100042 ARO:3007639 PubChem:6441582