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RYBP involves component of a Polycomb group (PcG) multiprotein PRC1-like complex, a complex class required to maintain the transcriptionally repressive state of many genes, including Hox genes, throughout development. PcG PRC1-like complex acts via chromatin remodeling and modification of histones; it mediates monoubiquitination of histone H2A 'Lys-119', rendering chromatin heritably changed in its expressibility. Component of a PRC1-like complex that mediates monoubiquitination of histone H2A 'Lys-119' on the X chromosome and is required for normal silencing of one copy of the X chromosome in XX females. May stimulate ubiquitination of histone H2A 'Lys-119' by recruiting the complex to target sites. Inhibits ubiquitination and subsequent degradation of TP53, and thereby plays a role in regulating transcription of TP53 target genes. May also regulate the ubiquitin-mediated proteasomal degradation of other proteins like FANK1 to regulate apoptosis. May be implicated in the regulation of the transcription as a repressor of the transcriptional activity of E4TF1. May bind to DNA. May play a role in the repression of tumor growth and metastasis in breast cancer by down-regulating SRRM3.
For Research Use Only. Not for use in diagnostic procedures. Not for resale without express authorization.
Protein Aliases: APAP-1; Apoptin-associating protein 1; Death effector domain-associated factor; DED-associated factor; RING1 and YY1-binding protein; Ring1 interactor Rybp; YY1 and E4TF1 associated factor 1; YY1 and E4TF1-associated factor 1
Gene Aliases: 2410018J24Rik; AAP1; APAP-1; DEDAF; RYBP; YEAF1
UniProt ID: (Human) Q8N488, (Mouse) Q8CCI5
Entrez Gene ID: (Human) 23429, (Rat) 312603, (Mouse) 56353
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