<prompt> Inhibition of protein synthesis in translocation steps occurs byTetracyclineErythromycinAminoglycosidesPenicillin  <response>: Reversible Inhibitors in bacteria : These antibiotics are bacteriostatic . Tetracycline bind to the 30S subunit of bacterial ribosome and so inhibit attachment of aminoacyl tRNA to the A site of ribosomes. Chloramphenicol inhibits the peptidyl transeferase acitivity of bacterial ribosomes. Erythromycin macrolides and clindamycin prevent the translocation process. REFERENCE : DM.VASUDEVAN.TEXTBOOK ; SEVENTH EDITION ; PAGE NO : 605. 