title: Nuclease contaminant of a batch of lysozyme used for ribosome extraction: cleavage of Escherichia coli 23S rRNA into two specific fragments.
mesh_terms: D000535:Aluminum; D002458:Cell Fractionation; D002499:Centrifugation, Density Gradient; D004591:Electrophoresis, Polyacrylamide Gel; D004926:Escherichia coli / Q000032:analysis* / Q000166:cytology; D009113:Muramidase; D012329:RNA, Bacterial / Q000302:isolation & purification*; D012335:RNA, Ribosomal / Q000302:isolation & purification*; D012260:Ribonucleases; D012270:Ribosomes / Q000032:analysis
chemical_list: D012329:RNA, Bacterial; D012335:RNA, Ribosomal; D000535:Aluminum; D012260:Ribonucleases; D009113:Muramidase