title: Specific chemical modification of the ribosome close to the peptidyl transferase center.
mesh_terms: D000478:Alkylation; D002250:Carbon Radioisotopes; D002699:Chlorambucil; D002845:Chromatography; D004926:Escherichia coli; D012343:RNA, Transfer; D012270:Ribosomes
chemical_list: D002250:Carbon Radioisotopes; D002699:Chlorambucil; D012343:RNA, Transfer