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Ubinuclein 2 is essential for mouse development and functions in X chromosome inactivation
A new study in PLoS Genetics by the Wutz group (IMHS) characterizes the two Ubinuclein genes in mouse development. While mutation of Ubinuclein 1 causes no overt phenotype, Ubinuclein 2 is shown to be critical for embryogenesis with a function in X chromosome inactivation in female embryos advancing our understanding of mammalian dosage compensation.