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：1975
卷号：72
期号：3
页码：829-833
DOI：10.1073/pnas.72.3.829
语种：English
出版社：The National Academy of Sciences of the United States of America
摘要：Pulse-labeled colicin E1 plasmid (Col E1) DNA in minicells was examined to characterize replicating molecules. Replication of Col E1 DNA principally occurred in covalently closed molecules and involved the synthesis of variable length single-stranded DNA fragments that were dissociable from the template DNA and ultimately incorporated into the completely replicated molecules. RNA was found to be associated with some of these newly synthesized fragments. Replicating molecules containing different size displacement loops were observed by electron microscopy.
