The imprinting of a large cluster of paternally expressed genes at the Prader-Willi syndrome locus is established by an imprinting centre in human and mouse. Deletions carried by a member of a rare family and by chimaeric mice demonstrate that the imprinting centre is additionally required for postzygotic maintenance of paternal identity.
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Mann, M., Bartolomei, M. Maintaining imprinting. Nat Genet 25, 4–5 (2000). https://doi.org/10.1038/75575
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DOI: https://doi.org/10.1038/75575
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