CRYSTAL STRUCTURE OF THE E. COLI 70S RIBOSOME IN AN INTERMEDIATE STATE OF RATCHETING 3I22 RIBOSOME, RIBOSOME STRUCTURE, PROTEIN-RNA COMPLEX, ACETYLATION, RIBONUCLEOPROTEIN, RIBOSOMAL PROTEIN, RNA-BINDING, RRNA- BINDING, METHYLATION, ANTIBIOTIC RESISTANCE, REPRESSOR, TRANSCRIPTION, TRANSCRIPTION REGULATION, TRANSCRIPTION TERMINATION, TRANSLATION REGULATION, TRNA-BINDING, PHOSPHOPROTEIN