【摘 要】
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The retinoblastoma (Rb) suppressor associated protein 46 (RbAp46) also named retinoblastoma binding protein 7 (RBBP7) was first identified as a protein in HeLa
【机 构】
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Jiangsu Institute of Hematology,Department of Hematology
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The retinoblastoma (Rb) suppressor associated protein 46 (RbAp46) also named retinoblastoma binding protein 7 (RBBP7) was first identified as a protein in HeLa cells that binds to an Rb affinity column.RbAp46 has been shown to be a core component of the mSin3 histone deacetylase (HDAC) complex1 and NuRD ( a multi-subunit complex containing chromosome-remodeling activity).2 RbAp46 is also known as the histone acetyltransferase (HAT) type B subunit 2.3 Thus,RbAp46 functions as a core-histone-binding subunit that targets chromatin assembly factors,chromatin-remodeling factors,histone acetyltransferase and deacetylase to their histone substrates in chromatin.Guan et al4 isolated RbAp46 as a downstream target gene of the Wilmstumor suppressor gene (WT1),mediating the function of WT1.It has been discovered recently that RbAp46 specifically interacts with the BRCT domain of breast cancer and ovarian cancer susceptibility gene BRCA1 and modulates its transcriptional transactivation activity.5
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