1PQ6: Human Lxr Beta Hormone Receptor / Gw3965 Complex

The structures of the liver X receptor LXRbeta (NR1H2) have been determined in complexes with two synthetic ligands, T0901317 and GW3965, to 2.1 and 2.4 A, respectively. Together with its isoform LXRalpha (NR1H3) it regulates target genes involved in metabolism and transport of cholesterol and fatty acids. The two LXRbeta structures reveal a flexible ligand-binding pocket that can adjust to accommodate fundamentally different ligands. The ligand-binding pocket is hydrophobic but with polar or charged residues at the two ends of the cavity. T0901317 takes advantage of this by binding to His-435 close to H12 while GW3965 orients itself with its charged group in the opposite direction. Both ligands induce a fixed "agonist conformation" of helix H12 (also called the AF-2 domain), resulting in a transcriptionally active receptor.
PDB ID: 1PQ6Download
MMDB ID: 23784
PDB Deposition Date: 2003/6/18
Updated in MMDB: 2003/12
Experimental Method:
x-ray diffraction
Resolution: 2.4  Å
Source Organism:
Similar Structures:
Biological Unit for 1PQ6: dimeric; determined by author
Molecular Components in 1PQ6
Label Count Molecule
Proteins (2 molecules)
Oxysterols Receptor Lxr-beta(Gene symbol: NR1H2)
Molecule annotation
Chemicals (4 molecules)
* Click molecule labels to explore molecular sequence information.

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