S1 SINE retroposons are methylated at symmetrical and non- symmetrical positions in Brassica napus: identification of a preferred target site for asymmetrical methylation
(1) Department of Cell Biology, John Innes Centre, Karyobiology group, Colney Lane, Norwich, NR4 7UH, UK;(2) Biomove, UMR 6547 CNRS, Université Blaise Pascal Clermont-Ferrand II, 63177 Aubière Cedex, France