1UOM

The Structure of Estrogen Receptor in Complex with a Selective and Potent Tetrahydroisochiolin Ligand.


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.28 Å
  • R-Value Free: 0.287 
  • R-Value Work: 0.235 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Estrogen Receptor Modulators: Identification and Structure-Activity Relationships of Potent Eralpha-Selective Tetrahydroisoquinoline Ligands

Renaud, J.Bischoff, S.F.Buhl, T.Floersheim, P.Fournier, B.Halleux, C.Kallen, J.Keller, H.Schlaeppi, J.-M.Stark, W.

(2003) J.Med.Chem. 46: 2945

  • DOI: 10.1021/jm030086h

  • PubMed Abstract: 
  • As part of a program aimed at the development of selective estrogen receptor modulators (SERMs), tetrahydroisoquinoline derivative 27 was discovered by high throughput screening. Successive replacements of the p-F substituent of 27 by an aminoethoxy ...

    As part of a program aimed at the development of selective estrogen receptor modulators (SERMs), tetrahydroisoquinoline derivative 27 was discovered by high throughput screening. Successive replacements of the p-F substituent of 27 by an aminoethoxy side chain and of the 1-H of the tetrahydroisoquinoline core by a 1-Me group provided analogues 19 and 20. These compounds showed potencies in a cell-based reporter gene assay (ERE assay) varying between 0.6 and 20 nM and displayed antagonist behaviors in the MCF-7 human breast adenocarcinoma cell line with IC(50)s in the range of 2-36 nM. The effect of N-phenyl substituents on the activity and pharmacokinetic properties of tetrahydroisoquinoline analogues was explored. As a result of this investigation, two potent derivatives bearing a p-F N-aryl group, 19c and 20c, were discovered as candidates suitable for further profiling. To gain insight into the ligand-receptor interaction, the X-ray crystallographic structure of the 1-H tetrahydroisoquinoline derivative (R)-18a in complex with ERalpha-ligand binding domain (LBD)(301)(-)(553)/C-->S triple mutant was solved to 2.28 A. An overlay of this X-ray crystal structure with that reported for the complex of ERalpha-LBD(301)(-)(553)/carboxymethylated C and raloxifene (5) shows that both compounds bind to the same cleft of the receptor and display comparable binding modes, with differences being observed in the conformation of their "D-ring" phenyl groups.


    Organizational Affiliation

    Novartis Pharma Research, WKL-136.3.25, CH-4002 Basel, Switzerland. johanne.renaud@pharma.novartis.com




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
ESTROGEN RECEPTOR
A
254Homo sapiensMutation(s): 3 
Gene Names: ESR1 (ESR, NR3A1)
Find proteins for P03372 (Homo sapiens)
Go to Gene View: ESR1
Go to UniProtKB:  P03372
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
PTI
Query on PTI

Download SDF File 
Download CCD File 
A
2-PHENYL-1-[4-(2-PIPERIDIN-1-YL-ETHOXY)-PHENYL]-1,2,3,4-TETRAHYDRO-ISOQUINOLIN-6-OL
C28 H32 N2 O2
FMWVCTJKLAVRPB-MUUNZHRXSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
PTIIC50: 19 nM BINDINGMOAD
PTIIC50: 19 nM PDBBIND
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.28 Å
  • R-Value Free: 0.287 
  • R-Value Work: 0.235 
  • Space Group: P 65 2 2
Unit Cell:
Length (Å)Angle (°)
a = 58.200α = 90.00
b = 58.200β = 90.00
c = 274.600γ = 120.00
Software Package:
Software NamePurpose
CNXrefinement
DENZOdata reduction
SCALEPACKdata scaling
AMoREphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2003-07-03
    Type: Initial release
  • Version 1.1: 2011-05-08
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance