Mammalian DNMTs in the male germ line DNA ofDrosophila

Author:

Weyrich Alexandra12345,Tang Xiaojing12345,Xu Guoliang12345,Schrattenholz André12345,Hunzinger Christian12345,Hennig Wolfgang12345

Affiliation:

1. DAAD-Laboratory, MPG-Guest Laboratory, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 200031, China.

2. CAS-MPG Partner Institute for Computational Biology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 200031, China.

3. Institut für Genetik, Johannes Gutenberg-Universität, Mainz, Germany.

4. Institute of Biochemistry and Cell Biology, Chinese Academy of Sciences, Shanghai, China.

5. ProteoSys, Carl Zeiss Str. 1, Mainz 55149, Germany.

Abstract

It is controversial whether DNA methylation plays a functional role in Drosophila . We have studied testis DNA of Drosophila melanogaster Meigen, 1830 with antisera against 5-methylcytosine (5mC) and found no evidence for the presence of significant amounts of 5mC. Reactions occur only with 1 of 3 5mC antisera, but they are restricted to nuclear regions without detectable amounts of DNA. The antisera apparently cross-react with other nuclear components. If the murine de novo DNA methyltransferases, DNMT3A and DNMT3B, are expressed under the control of the spermatocyte-specific β2-tubulin promoter in testes, DNA methylation is not increased and no effects on the fertility of the fly are seen. DNA methylation has, therefore, no functional relevance in the male germ line of Drosophila.

Publisher

Canadian Science Publishing

Subject

Cell Biology,Molecular Biology,Biochemistry

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