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Transformation/transcription domain-associated protein
Transformation/transcription domain-associated protein, also known asTRRAP, is a protein that in humans is encoded by the ''TRRAP'' gene. TRRAP belongs to the phosphatidylinositol 3-kinase-related kinase protein family.
== Function ==
TRRAP is an adapter protein, which is found in various multiprotein chromatin complexes with histone acetyltransferase activity (HAT), which in turn is responsible for epigenetic transcription activation. TRRAP has a central role in MYC (c-Myc) transcription activation, and also participates in cell transformation by MYC. It is required for p53/TP53-, E2F1-, and E2F4-mediated transcription activation. It is also involved in transcription activation mediated by the adenovirus E1A, a viral oncoprotein that deregulates transcription of key genes.
TRRAP is also required for the mitotic checkpoint and normal cell cycle progression. The MRN complex (composed of MRE11, RAD50, and NBS1) is involved in the detection and repair of DNA double-strand breaks (DSBs). TRRAP associates with the MRN complex and when TRRAP is removed, the complex shows reduced cDNA end-joining activity. Hence, TRRAP may function as a link between DSB repair and chromatin remodeling.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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