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  • Title: [Androgen receptor and SMRT].
    Author: Liao GQ, Tang HH, Lü XS.
    Journal: Zhong Nan Da Xue Xue Bao Yi Xue Ban; 2004 Apr; 29(2):157-62. PubMed ID: 16145900.
    Abstract:
    OBJECTIVE: To explore the interaction between androgen receptor (AR) and silencing mediator for retinoid and thyroid hormone receptor (SMRT) and their interaction site. Methods We recombined and constructed AR, SMRT gene and gene fragments, in vitro translated 35S fusion proteins to investigate the relationship between AR and SMRT using transient transfection, mammalian two-hybrid test, GST pull-down assay, and indirect immunofluorescence staining. Results AR possessed an intrinsic transcriptional repression activity and AR interacted directly with SMRT. One interactive surface on AR was mapped to the ligand-binding domain (LBD), and the presence of DNA binding domain enhanced this interaction. The binding surface on SMRT was mapped to the carboxyl-terminal nuclear receptor interacting domain (ID), and mutation of the LXXXIXXXI/L corepressor motif within this domain interferred with the interaction. CONCLUSION: LBD domain on the AR can interact with ID2 motif on the SMRT.
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