“…A strong binding site exists on the 30S subunit and a lot of weaker sites on the 30S and 50S subunits 59 , 60 , 61 . Tetracycline may incorporate mainly into ribosomal proteins 62 , 63 since, in the absence of ribonucleoprotein, 16S RNA and the proteins S3, S7, S8, S14 and S19 show high affinity for tetracycline 64 particularly S7 60 . In addition, using a photoreactive benzophenone derivative of tRNA [3-(4-benzoylphenyl)propionyl-phenylalanine transfer RNA (BP-Phe-tRNA)], the photoreaction of 23S RNA was completely inhibited by tetracycline and tetracycline itself interacted efficiently with the loop V region of 23S RNA 65 , 66 .…”