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Molecular basis of base substitution hotspots in Escherichia coli

Molecular basis of base substitution hotspots in Escherichia coli In the lacI gene of Escherichia coli spontaneous base substitution hotspots occur at 5-methylcytosine residues. The hotspots disappear when the respective cytosines are not methylated. We suggest that the hotspots may result from the spontaneous deamination of 5-methylcytosine to thymine, which is not excised by the enzyme DNA-uracil glycosidase. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Nature Springer Journals

Molecular basis of base substitution hotspots in Escherichia coli

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References (18)

Publisher
Springer Journals
Copyright
Copyright © 1978 by Nature Publishing Group
Subject
Science, Humanities and Social Sciences, multidisciplinary; Science, Humanities and Social Sciences, multidisciplinary; Science, multidisciplinary
ISSN
0028-0836
eISSN
1476-4687
DOI
10.1038/274775a0
Publisher site
See Article on Publisher Site

Abstract

In the lacI gene of Escherichia coli spontaneous base substitution hotspots occur at 5-methylcytosine residues. The hotspots disappear when the respective cytosines are not methylated. We suggest that the hotspots may result from the spontaneous deamination of 5-methylcytosine to thymine, which is not excised by the enzyme DNA-uracil glycosidase.

Journal

NatureSpringer Journals

Published: Aug 24, 1978

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