1O79

Structures of human oxidosqualene cyclase inhibitors bound to a homolgous enzyme


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.8 Å
  • R-Value Free: 0.273 
  • R-Value Work: 0.239 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Binding Structures and Potencies of Oxidosqualene Cyclase Inhibitors with the Homologous Squalene-Hopene Cyclase

Lenhart, A.Reinert, D.J.Aebi, J.D.Dehmlow, H.Morand, O.H.Schulz, G.E.

(2003) J.Med.Chem. 46: 2083

  • DOI: 10.1021/jm0211218
  • Primary Citation of Related Structures:  1H35, 1H36, 1H37, 1H39, 1H3A, 1H3B, 1H3C, 1O6H, 1O6Q, 1O6R

  • PubMed Abstract: 
  • The binding structures of 11 human oxidosqualene cyclase inhibitors designed as cholesterol-lowering agents were determined for the squalene-hopene cyclase from Alicyclobacillus acidocaldarius, which is the only structurally known homologue of the hu ...

    The binding structures of 11 human oxidosqualene cyclase inhibitors designed as cholesterol-lowering agents were determined for the squalene-hopene cyclase from Alicyclobacillus acidocaldarius, which is the only structurally known homologue of the human enzyme. The complexes were produced by cocrystallization, and the structures were elucidated by X-ray diffraction analyses. All inhibitors were bound in the large active center cavity. The detailed binding structures are presented and discussed in the light of the IC50 values of these 11 as well as 17 other inhibitors. They provide a consistent picture for the inhibition of the bacterial enzyme and can be used to adjust and improve homology models of the human enzyme. The detailed active center structures of the two enzymes are too different to show an IC50 correlation.


    Related Citations: 
    • The Structure of the Membrane Protein Squalene-Hopene Cyclase at 2.0 A Resolution
      Wendt, K.U.,Lenhart, A.,Schulz, G.E.
      (1999) J.Mol.Biol. 286: 175
    • Structure and Function of a Squalene Cyclase
      Wendt, K.U.,Poralla, K.,Schulz, G.E.
      (1997) Science 277: 1811
    • Ro48-8071, a New 2,3-Oxidosqualene:Lanosterol Cyclase Inhibitor Lowering Plasma Cholesterol in Hamsters, Squirrel Monkeys, and Minipigs: Comparison to Simvastatin
      Morand, O.H.,Aebi, J.D.,Dehmlow, H.,Ji, Y.H.,Gains, N.,Lengsfeld, H.,Himber, J.
      (1997) J.Lipid Res. 38: 373
    • Crystal Structure of a Squalene Cyclase in Complex with the Potential Anticholesteremic Drug Ro48-8071
      Lenhart, A.,Weihofen, W.A.,Pleschke, A.E.W.,Schulz, G.E.
      (2002) Chem.Biol. 9: 639


    Organizational Affiliation

    Institut für Organische Chemie und Biochemie, Albert-Ludwigs-Universität, Albertstrasse 21, Freiburg im Breisgau 79104, Germany.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
SQUALENE--HOPENE CYCLASE
A, B, C
631Alicyclobacillus acidocaldarius subsp. acidocaldarius (strain ATCC 27009 / DSM 446 / JCM 5260 / NBRC 15652 / NCIMB 11725 / NRRL B-14509 / 104-1A)Gene Names: shc
EC: 5.4.99.17, 4.2.1.129
Find proteins for P33247 (Alicyclobacillus acidocaldarius subsp. acidocaldarius (strain ATCC 27009 / DSM 446 / JCM 5260 / NBRC 15652 / NCIMB 11725 / NRRL B-14509 / 104-1A))
Go to UniProtKB:  P33247
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
R23
Query on R23

Download SDF File 
Download CCD File 
A, B, C
METHYL-[4-(4-PIPERIDINE-1-YLMETHYL-PHENYL)-CYCLOHEXYL]-CARBAMINIC ACID-(4-CHLOROPHENYL)-ESTER
C26 H33 Cl N2 O2
AMKFOVYTEUFMCU-HCGLCNNCSA-N
 Ligand Interaction
C8E
Query on C8E

Download SDF File 
Download CCD File 
A, B, C
(HYDROXYETHYLOXY)TRI(ETHYLOXY)OCTANE
C16 H34 O5
FEOZZFHAVXYAMB-UHFFFAOYSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
R23IC50: 406 nM (100) BINDINGDB
R23IC50: 406 nM PDBBIND
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.8 Å
  • R-Value Free: 0.273 
  • R-Value Work: 0.239 
  • Space Group: P 32 2 1
Unit Cell:
Length (Å)Angle (°)
a = 141.289α = 90.00
b = 141.289β = 90.00
c = 245.397γ = 120.00
Software Package:
Software NamePurpose
XDSdata reduction
SCALAdata scaling
CNSrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2003-10-23
    Type: Initial release
  • Version 1.1: 2013-11-20
    Type: Derived calculations, Non-polymer description, Other, Refinement description, Source and taxonomy, Structure summary, Version format compliance