| 76073 | Q3UK78 | PCGF5_MOUSE | Polycomb group RING finger protein 5 (RING finger protein 159) | DISRUPTION PHENOTYPE | Combined disruption of both Pcgf3 and Pcgf5 causes embryonic lethality; there are no live progeny. Male embryos are detected at 9.5 and 10.5 dpc, but are smaller than normal. Female embryos are already extensively degraded at 9.5 dpc. Placentas from male embryos have some parietal trophoblast giant cells, but fail to form a labyrinth. Placentas from female embryos lack trophoblasts altogether and fail to form a labyrinth. Defects can be attributed to the observed lack of monoubiquitination of histone H2A 'Lys-119' and lack of Xist-mediated silencing of one copy of the X chromosome. {ECO:0000269|PubMed:28596365}. |