Isolation of Z-DNA-containing plasmids.
- 1 September 1983
- journal article
- research article
- Published by Proceedings of the National Academy of Sciences in Proceedings of the National Academy of Sciences
- Vol. 80 (18) , 5550-5553
- https://doi.org/10.1073/pnas.80.18.5550
Abstract
A purified, monoclonal antibody, specific for the left-handed Z-form of poly(dG-dC), was coupled covalently to Sephacryl S-1000 beads. Such an antibody column provides a convenient method to isolate and purify those plasmid DNAs that contain Z-DNA from a large excess of other DNAs, RNA, etc. From a library of Escherichia coli DNA, cloned into the vector plasmid pUC-8, several recombinant plasmids were isolated, which bind to this antibody. Thus, E. coli contains sequences, which in "natural" negatively supercoiled DNA, adopt a left-handed Z-DNA-like conformation.This publication has 31 references indexed in Scilit:
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