keywords 30S RIBOSOMAL-SUBUNIT AMINOGLYCOSIDE-MODIFYING ENZYMES CRYSTAL-STRUCTURE ERYTHROMYCIN ESTERASE ESCHERICHIA-COLI FOSFOMYCIN RESISTANCE PROTEIN GCN5-RELATED N-ACETYLTRANSFERASE Infectious Diseases Life Sciences & Biomedicine MACROLIDE ANTIBIOTICS MYCOBACTERIUM-TUBERCULOSIS Microbiology NUCLEOTIDE-SEQUENCE Pharmacology & Pharmacy Science & Technology