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