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Methylation and restriction endonuclease cleavage of linear Z-DNA in the presence of hexamminecobalt (III) ions
Journal article   Open access   Peer reviewed

Methylation and restriction endonuclease cleavage of linear Z-DNA in the presence of hexamminecobalt (III) ions

Gerald Soslau, Janet Parker and Jeffrey W. Nelson
Nucleic acids research, v 14(18), pp 7237-7252
11 Sep 1986
DOI: https://doi.org/10.1093/nar/14.18.7237
PMID: 3020510
Featured in Collection :   UN Sustainable Development Goals @ Drexel
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https://doi.org/10.1093/nar/14.18.7237View
Published, Version of Record (VoR)Maybe Open Access (Publisher Bronze),  Open

Abstract

These studies employed the synthetic linear DNA, poly dGdC. in the B and cobalt hexammine chloride (Co)-induced Z form to determine the effect of conformation on protein-DNA Interactions. The rate of the reaction of the restriction endonucleases, Hha I and Cfo I, are reduced with Z DNA as compared to B DNA. The ability of both restriction endonucleases to react with an aggregate form of Z DNA (Z* DNA) is found to depend upon how the Z* DNA is formed. When Z* DNA is induced by low concentrations of Co (50 μM), the endonucleases remain active. In the presence of 100 μM Co. which causes increased aggregation, the endonucleases are inactive. The Hha I DNA methyltransferase reacts at equal rates with the B, Z and low cobalt Z* forms and at a greatly reduced rate with the high cobalt Z* form. These results are significantly different than those observed with Z form dGdC tracts inserted into circular DNA molecules.

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Collaboration types
Domestic collaboration
Web of Science research areas
Biochemistry & Molecular Biology
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