1XJ7

Complex Androgen Receptor LBD and RAC3 peptide

Summary for 1XJ7

• Entry DOI: 10.2210/pdb1xj7/pdb
• Related: 1T5Z 1T63 1T65
• Descriptor: Androgen receptor, RAC3 derived peptide, 5-ALPHA-DIHYDROTESTOSTERONE, ... (4 entities in total)
• Functional Keywords: androgen receptor coactivators lxxll motif, hormone-growth factor complex, hormone/growth factor
• Biological source: Homo sapiens (human); More
• Cellular location: Nucleus : P10275
• Total number of polymer chains: 2
• Total formula weight: 31393.92

Authors

Estebanez-Perpina, E.,Moore, J.M.R.,Mar, E.,Nguyen, P.,Delgado-Rodrigues, E.,Baxter, J.D.,Buehrer, B.M.,Webb, P.,Fletterick, R.J.,Guy, R.K. (deposition date: 2004-09-22, release date: 2005-01-25, Last modification date: 2024-03-13)

Primary citation

Estebanez-Perpina, E.,Moore, J.M.R.,Mar, E.,Delgado-Rodrigues, E.,Nguyen, P.,Baxter, J.D.,Buehrer, B.M.,Webb, P.,Fletterick, R.J.,Guy, R.K.
The Molecular Mechanisms of Coactivator Utilization in Ligand-dependent Transactivation by the Androgen Receptor
J.Biol.Chem., 280:8060-8068, 2005

PubMed Abstract: Androgens drive sex differentiation, bone and muscle development, and promote growth of hormone-dependent cancers by binding the nuclear androgen receptor (AR), which recruits coactivators to responsive genes. Most nuclear receptors recruit steroid receptor coactivators (SRCs) to their ligand binding domain (LBD) using a leucine-rich motif (LXXLL). AR is believed to recruit unique coactivators to its LBD using an aromatic-rich motif (FXXLF) while recruiting SRCs to its N-terminal domain (NTD) through an alternate mechanism. Here, we report that the AR-LBD interacts with both FXXLF motifs and a subset of LXXLL motifs and that contacts with these LXXLL motifs are both necessary and sufficient for SRC-mediated AR regulation of transcription. Crystal structures of the activated AR in complex with both recruitment motifs reveal that side chains unique to the AR-LBD rearrange to bind either the bulky FXXLF motifs or the more compact LXXLL motifs and that AR utilizes subsidiary contacts with LXXLL flanking sequences to discriminate between LXXLL motifs.

PubMed: 15563469
DOI: 10.1074/jbc.M407046200

Experimental method

X-RAY DIFFRACTION (2.7 Å)