ISDA

Entry Detail

PDB ID:

1L2J

Keywords:

Title:

Human Estrogen Receptor beta Ligand-binding Domain in Complex with (R,R)-5,11-cis-diethyl-5,6,11,12-tetrahydrochrysene-2,8-diol

Biological Source:

Source Organism:

Homo sapiens

Host Organism:

Escherichia coli

PDB Version:

Deposition Date:

2002-02-21

Release Date:

2002-05-01

Method Details:

Experimental Method:

X-RAY DIFFRACTION

Resolution:

2.95 Å

R-Value Free:

0.29

R-Value Work:

0.25

Space Group:

H 3

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Macromolecular Entities

Protein Blast

Polymer Type:polypeptide(L)
Description:ESTROGEN RECEPTOR BETA
Chain IDs:A, B
Chain Length:271
Number of Molecules:2
Biological Source:Homo sapiens

UniProt ID:Q92731 Pfam ID:PF00104

Ligand Molecules

ETC

Primary Citation

Structural characterization of a subtype-selective ligand reveals a novel mode of estrogen receptor antagonism.

Shiau, A.K, Barstad, D, Radek, J.T, Meyers, M.J, Nettles, K.W, Katzenellenbogen, B.S, Katzenellenbogen, J.A, Agard, D.A, Greene, G.L, Pike, A.C.W, Brzozowski, A.M, Hubbard, R.E, Bonn, T, Thorsell, A.G, Engstrom, O, Ljunggren, J, Gustafsson, J.A, Carlquist, M, Meyers, M.J, Sun, J, Carlson, K.E, Katzenellenbogen, B.S, Katzenellenbogen, J.A.Show

Nat.Struct.Biol. 9 359 364 (2002)

PMID: 11953755

Abstact

The R,R enantiomer of 5,11-cis-diethyl-5,6,11,12-tetrahydrochrysene-2,8-diol (THC) exerts opposite effects on the transcriptional activity of the two estrogen receptor (ER) subtypes, ER alpha and ER beta. THC acts as an ER alpha agonist and as an ER beta antagonist. We have determined the crystal structures of the ER alpha ligand binding domain (LBD) bound to both THC and a fragment of the transcriptional coactivator GRIP1, and the ER beta LBD bound to THC. THC stabilizes a conformation of the ER alpha LBD that permits coactivator association and a conformation of the ER beta LBD that prevents coactivator association. A comparison of the two structures, taken together with functional data, reveals that THC does not act on ER beta through the same mechanisms used by other known ER antagonists. Instead, THC antagonizes ER beta through a novel mechanism we term 'passive antagonism'.

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Primary Citation of related structures