期刊名称：Proceedings of the National Academy of Sciences
印刷版ISSN：0027-8424
电子版ISSN：1091-6490
出版年度：1973
卷号：70
期号：1
页码：156-160
DOI：10.1073/pnas.70.1.156
语种：English
出版社：The National Academy of Sciences of the United States of America
摘要：The question of whether or not a cellular ribonuclease is involved in the cleavage of 16S ribosomal RNA by colicin E3 was investigated. For this purpose ribosomes from strains devoid of some ribonucleases or ribosomes in which ribonucleases had been inactivated by heat or removed by extensive washings were used for the colicin reaction. Since the 16S RNA of all these different ribosomes, and even of the most extensively washed ribosomes, was cleaved by colicin E3, it is suggested that cellular ribonucleases are not involved in colicin E3 action. Thus, colicin E3 seems to be a unique endoribonuclease.
关键词：ribosomes ; 16S rRNA ; gel electrophoresis ; RNase-less mutants
