Ayako Sakaguchi

Epitope Distribution of Randomly Established Monoclonal Antibodies against Human Type II DNA Topoisomerases (2002)

Sakaguchi, Ayako, Miyaike, Mitsuko, Kuroda, Kazufumi, Nozaki, Naohito, Tanaka, Masato, Hibino, Makoto, ...

The epitopes of about 100 monoclonal antibodies against human type II DNA topoi-somerase were mapped along the enzyme molecules. Although they were randomly and independently established, epitope...

Aberrant monomethylation of histone H4 lysine 20 activates the DNA damage checkpoint in Drosophila melanogaster

Sakaguchi, Ayako, Steward, Ruth

PR-Set7 is a histone methyltransferase that specifically monomethylates histone H4 lysine 20 (K20) and is essential for cell proliferation. Our results show that in PR-Set7 mutants, the DNA damage...

Functional Characterization of the Drosophila Hmt4-20/Suv4-20 Histone Methyltransferase

Sakaguchi, Ayako, Karachentsev, Dmitry, Seth-Pasricha, Mansha, Druzhinina, Marina, Steward, Ruth

Di- and trimethylation of histone H4 lysine20 (H4K20) are thought to play an important role in controlling gene expression in vertebrates and in Drosophila. By inducing a null mutation in Drosophila...