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Closed Access item The distribution of 5-methylcytosine in the nuclear genome of plants

Authors:Montero, L. M.
Filipski, J.
Gil, P.
Capel, Juan
Martínez-Zapater, José M.
Salinas, Julio
Issue Date:1992
Publisher:Oxford University Press
Citation:Nucleic Acids Research 20(12): 3207-3210 (1992)
Abstract:We have determined the 5-methylcytosine (5mC) content in high molecular weight DNA, from two dicot (tobacco and pea) and two monocot (wheat and maize) plant species, fractionated according to base composition. The results show that the proportion of 5mC in the genomic fractions increases linearly with their guanine+cytosine (G+C) content while the proportion of non-methylated cytosine remains almost constant. This can be interpreted as a consequence of a difference in mutation pressure related to spontaneous deamination of 5mC to thymine between the different compartments of plant genomes.
Publisher version (URL):http://dx.doi.org/10.1093/nar/20.12.3207
URI:http://hdl.handle.net/10261/43110
ISSN:0305-1048
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Appears in Collections:(CNB) Artículos

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